8 Best VoIP Apps for iPhone in 2023
This article is part of a larger series on VoIP.
The best voice-over-internet-protocol (VoIP) app for iPhone seamlessly works with mobile iOS devices, allowing you to run your company’s phone communications on the go. It provides the ability to separate work and personal calls as well as instant access to key business phone functionalities, such as call forwarding, visual voicemail, and caller ID. In this guide, we looked at the best VoIP app for iPhone and compared what each provider has to offer.
Based on our review, the best VoIP apps for iPhone are the following:
- Vonage: Best overall, easy to use, and customizable VoIP iPhone app
- RingCentral: Top choice for complete call management capabilities
- Nextiva: Ideal for team collaboration and customer engagement in one app
- Dialpad: Excellent option for artificial intelligence (AI)-based voice features
- Ooma: Best straightforward office phone system
- Grasshopper: Best for virtual phone number service
- OnSIP: Best free cloud-based phone solution
- Line2: Best lightweight VoIP app for iPhone
Best VoIP Apps for iPhone at a Glance
VoIP Apps for iPhone | Monthly Starting Price | Key Features | Free Trial | FSB Rating |
|---|---|---|---|---|
 | $19.99 |
| ✕ | 4.35 out of 5 |
 | $30 |
| 14 days | 4.30 out of 5 |
 | $30.95 |
| 7 days | 4.20 out of 5 |
 | $23 |
| 14 days | 4.16 out of 5 |
 | $19.95 |
| 30 days | 4.10 out of 5 |
 | $31 |
| 7 days | 3.68 out of 5 |
 | $18.95 |
| ✕ | 3.56 out of 5 |
 | $15.99 |
| ✕ | 3.55 out of 5 |
Vonage: Best Overall VoIP App for iPhone
Overall Score:
4.35 / 5
What We Liked
- Integrates with Siri
- Unified inbox for private/business number
- All plans include 43 calling features
Where It Falls Behind
- Business inbox requires extra fees
- Visual voicemail unlocks at the highest tier
- Mobile app has no tablet version
Vonage Monthly Pricing (per User)*
- Mobile: $19.99 for auto-attendant, SMS/MMS, call blocking, contact history, call forwarding, call hold, caller ID, and do not disturb (DND)
- Premium: $29.99 for multi-level auto-attendant, unlimited video meetings, and customer relationship management (CRM) integration
- Advanced: $39.99 for on-demand call recording, call group, and visual voicemail
*Discounts apply for five or more users
Vonage is our best overall VoIP app for iPhone users due to its excellent usability and customizable business phone plans. It provides a unified interface for managing work-related calls, text messages, chats, and video meetings, allowing you to maintain a single business identity. All plans include 43 voice features, but you can add users, phone numbers, premium features, and extensions directly on the admin portal.
There are 18 paid add-ons to choose from, such as virtual extension, virtual assistant, online fax, and on-demand call recording. Add-on fees range from $4.99 to $49.99 per month. The Business Inbox is a premium Vonage feature for sending and receiving SMS, MMS, and Facebook chat.
The biggest disadvantage of an a la carte pricing model is that selecting multiple add-on features leads to increased monthly fees. If you need a robust calling system for a flat monthly price, consider RingCentral, which offers a suite of call management and phone administration capabilities at its entry-level plan.
Vonage Features
The Vonage mobile app combines all the messages sent to your personal and business number in one intuitive feed. (Source: Vonage)
- Call continuity: Automatically detects loss of phone signal in the event of an emergency or power outage. This lets you reroute incoming calls to a backup phone number of your choice.
- Visual call park: Park and retrieve up to two active calls from available virtual waiting rooms. Once parked, the call is put on hold, and the red indicator will light up.
- Custom call tag: Assign a label to a phone number or extension. The label is added to incoming call details so you can easily identify the origin of the call once it connects to your company line.
Learn more about Vonage as a unified communications solution in our Vonage review.
RingCentral: Best for Advanced Call Management
Overall Score:
4.30 / 5
What We Liked
- Complete call features on the base plan
- Advanced call options like call park and call flip
- 300+ third-party integrations
Where It Falls Behind
- Lacks unlimited SMS
- Mobile user extensions cannot be used for calls
- Complex configuration
RingCentral Monthly Pricing (per User)*
- Core: $30 for one phone number, 100 toll-free minutes, unlimited calls in U.S. and Canada, 25 SMS segments, visual voicemail, multi-level auto-attendant, call queues, and call management
- Advanced: $35 for 1,000 toll-free minutes, 100 SMS segments, advanced routing, auto-call recording, hot desking, advanced call monitoring, and business analytics
- Ultra: $45 for 10,000 toll-free minutes, 200 SMS segments, device analytics, and unlimited cloud storage
- Free trial: 14 days
*Discounts apply for annual billing and 50-plus registered users
RingCentral is the best iPhone VoIP app for business owners needing access to various calling features straight from their mobile devices. You get all the functionality of a regular landline desk phone and a wealth of enhanced VoIP capabilities, such as auto-attendant, call park, and call flip. This enables you to do advanced call management, including routing incoming calls, sending unanswered callers to voicemail, and switching calls between devices.
As the industry-leading business phone system, RingCentral is more than just a phone service. You also get video meetings, team messaging, business SMS, and fax in a user-friendly interface. It also has hundreds of integrations with popular third-party apps, allowing you to integrate your phone system into your workflows.
On the downside, RingCentral’s unified communications (UC) capabilities may be overkill for businesses with basic VoIP needs. In this case, consider a provider like Ooma, a straightforward office phone system that you can easily manage, all for a cheap monthly starting fee of $19.95.
RingCentral Features
Manage your calls, voicemail, and texts directly from your iOS device. (Source: RingCentral)
- Call screening: When a call comes in, the caller ID appears on your phone screen and gives you the option to answer the call, decline, block, or send it to voicemail.
- Call-to-video: This feature allows two RingCentral users in an active one-on-one call to switch to an active video meeting. Both users can share their screens.
- Call forwarding: Reroute incoming calls to another number, including your office, home, or personal number, to ensure no calls are missed.
Read our RingCentral review to learn all you need to know about its cloud phone system, including its features, pros/cons, and monthly plans.
Nextiva: Best for Team & Customer Communications
Overall Score:
4.20 / 5
What We Liked
- Easy-to-use mobile app
- Rich collaboration features
- High-volume toll-free minute bundles
Where It Falls Behind
- No unlimited SMS
- Requires the use of browser pop-up instead of in-app log in
- One of the most expensive providers on this list
Nextiva Monthly Pricing (per User)*
- Essential: $30.95 for one phone number, unlimited calls to the U.S. and Canada, 1,500 toll-free minutes, auto-attendant, call log reports, 45-minute video calls, and call group
- Professional: $35.95 for 3,000 toll-free minutes, multi-level auto-attendant, 1,000 SMS/MMS segments, and CRM integrations
- Enterprise: $45.95 for 12,500 toll-free minutes, call recording, voicemail transcription, and 2,000 SMS/MMS segments
- Free trial: 7 days
*Discounts are available for annual prepayments and volume purchases.
Nextiva is our top recommended VoIP app for iOS users who want to collaborate with teams and communicate with customers in one unified work hub. The NextivaONE platform brings together communication, productivity, collaboration, and customer management so you get more things done without dealing with multiple tabs or applications. With the Nextiva mobile app, access to VoIP features like call routing, advanced voicemail, and custom caller ID.
With a starting monthly per-user fee of $30.95, Nextiva is the most expensive option on this list. If you’re a solopreneur on a tight budget, we suggest you try OnSIP, which offers an absolutely free plan for making voice calls and small-scale video meetings.
Nextiva Features
Sync your local address book with your Nextiva contact list. (Source: Nextiva)
- Anonymous call rejection: Reject calls from parties with no caller ID attached. When enabled, all anonymous calls are automatically dropped, preventing the unwanted caller from even leaving a message.
- Do not disturb (DND): Turning on this feature will automatically ignore all incoming calls to your phone. The caller will either hear a busy tone or be redirected to voicemail or a specific destination.
- Selective call appearance: Create a set of conditions that must be met before an incoming call connects to your phone. If the conditions are not met, configure how you want calls to be rerouted.
Our Nextiva review provides a full overview of its phone system solution and customer management capabilities.
Dialpad: Best for AI-based Voice Features
Overall Score:
4.16 / 5
What We Liked
- AI features unlock at the base plan
- Automatic note-taking
- Rich contact profiles
Where It Falls Behind
- Limits meeting capacity to 10 users
- Toll-free numbers include additional charges
- Extensions unlock at the Enterprise plan
Dialpad Monthly Pricing (per User)*
- Standard: $23 for one local number, unlimited local calls, multi-level auto-attendant, visual voicemail, custom call routing, five-hour video calls, audio recording, call transcription, and post-call summaries
- Pro: $35 for international SMS, 25 ring groups, hold queues, and CRM integrations
- Enterprise: Custom pricing for 100% uptime and unlimited ring groups
- Free trial: 14 days
*Discounts apply to annual billing
Dialpad offers an intelligent VoIP solution that reduces manual and repetitive work in managing business calls. Built-in AI features instantly transcribe calls, track action items, take notes during meetings, and deliver post-call summaries directly to your inbox. With the Dialpad iOS app, you can move between channels and stay connected with your teams in one workspace.
Aside from voice calling, Dialpad AI features extend to team messaging and video meetings. Message, call, and meet with your teams within a single window so you never lose track of important conversations. It lets you connect your workspace with go-to apps like Microsoft 365, Google Workspace, and Salesforce.
Unlike most VoIP providers, toll-free numbers at Dialpad carry a monthly starting fee of $15 per user. This will incur additional costs if you need multiple toll-free numbers for your departments or call tracking campaigns. Grasshopper is an affordable alternative as it offers fixed monthly pricing for its toll-free phone number plans.
Dialpad Features
Dialpad lets you seamlessly move active calls from one device to another. (Source: Dialpad)
- Automatic spam blocking: Dialpad relies on a spam score tied to inbound calls to determine whether it should reach a user. An inbound call with a spam score of 100 is automatically blocked from reaching a Dialpad user.
- Virtual receptionist: An automated phone service that greets incoming callers and plays a prerecorded message listing all department options.
- Call flip: Instantly move a live call from your desktop to your smartphone or vice versa without interrupting or dropping the call.
Head over to our Dialpad review for the latest feature and pricing information about this AI-powered VoIP provider.
Ooma: Best No-frills Phone System
Overall Score:
4.10 / 5
What We Liked
- Base plan includes 50+ call features
- Rich call mobility features
- Low bandwidth footprint
Where It Falls Behind
- Limited integrations
- No annual or volume discounts
- Activation fee of $29.95
Ooma Monthly Pricing (per User)
- Essential: $19.95 for unlimited calls to the U.S., Canada, and Mexico, virtual receptionist, call park, ring groups, call blocking, call forwarding, and call flip
- Pro: $24.95 for dynamic caller ID, call recording, voicemail transcription, call analytics, SMS/MMS, four-hour video calls, and advanced call logs
- Plus: $29.95 for call queues, call screening, 12-hour video calls, and hot desking
Ooma is one of the best VoIP iPhone apps for businesses looking for a straightforward office phone system at a reasonable cost. The Ooma Office mobile app makes it easy to differentiate between work and personal calls. When the phone rings, it will let you know if it’s an Ooma call, including important caller information. Advanced telephony features allow you to swap between two callers on the same line, prioritize voicemails, and block calls from robocallers.
Ooma comes with unique iOS features to ensure greater efficiency. Under contacts, you can assign each caller a specific icon to differentiate their phone line type. An iOS widget is available for one-tap access to voicemail, dial pad, and call logs. You can also multitask by minimizing active call or voicemail screens.
However, if you want to integrate your phone system with third-party software, you’re better off with a fully integrated VoIP app like RingCentral. This provider has over 300 integrations with popular business apps, including customer relationship management (CRM) systems, productivity tools, and analytics platforms.
Ooma Features
Ooma’s multi-line support makes it easy to handle multiple calls simultaneously. (Source: Ooma)
- Dynamic caller ID: Set custom star codes to dynamically change caller ID for outbound calls. This is useful for phone operators placing calls on behalf of multiple executives.
- Caller info match: Presents a preview window with information about incoming and outbound calls based on the caller ID name or phone number. Set up different website searches for Google, Facebook, and LinkedIn.
- Advanced call logs: Provides additional information about an inbound or outbound call about whether a call was answered, sent to voicemail, unanswered, or disconnected.
Check out our Ooma review to find out why it’s our highly recommended VoIP for solopreneurs, startups, and small businesses.
Grasshopper: Best for Virtual Phone Number Service
Overall Score:
3.68 / 5
What We Liked
- Unlimited users for a fixed monthly cost
- Intuitive mobile app
- Unlimited calls and texts
Where It Falls Behind
- No video meetings
- Lacks integrations
- Not ideal for large call volumes
Grasshopper Monthly Pricing*
- Solo: $31 for one phone number and three extensions
- Partner: $46 for three phone numbers and six extensions
- Small Business: $80 for five phone numbers and unlimited extensions
- Free trial: 7 days
All plans include SMS, call forwarding, Wi-Fi calling, virtual fax, voicemail, custom greetings, call transfers, instant response, and reporting.
*Discounted annual fees are available
Grasshopper is one of our best VoIP apps for small businesses looking for virtual phone service for simplified calling and messaging needs. This means feature inclusions are only limited to basic call management and business texting. Unlimited users are allowed for each plan for fixed monthly pricing. All plans have the same feature set but differ in the number of toll-free phone numbers and extensions.
Grasshopper offers a straightforward solution for teams wanting to keep their work and personal calls separate. Its mobile app provides complete access to your phone system, allowing you to send calls and messages from your business number.
Since Grasshopper is a VoIP-based service, collaborative teams may want to consider a full-featured unified communications (UC) solution like Nextiva. It offers an all-in-one communication platform for video meetings, productivity, team messaging, and customer engagement.
Grasshopper Features
Grasshopper lets you send an instant response to missed calls from new customers.
(Source: Grasshopper)
- Incoming call control: Customize how and when to receive calls in your business number. Screen callers, block numbers, ring all forwarding numbers, and set up custom schedules for business hours.
- Wi-Fi calling: Place and receive calls over a Wi-Fi network in areas with poor cellular reception. Switching to Wi-Fi for outbound calls and texts helps you save minutes and cellular data.
- Simultaneous call handling: Set up multiple call forwarding numbers to avoid missing calls if the other line is busy or unavailable. This allows team members to answer all incoming calls, even during high call volumes.
Our Grasshopper review provides in-depth information about its use cases, pricing, features, and quality of customer support.
OnSIP: Best Free VoIP iPhone App for Solopreneurs
Overall Score:
3.56 / 5
What We Liked
- Flexible metered and unmetered plans
- Free calls to 20+ countries
- Calls to session initiation protocol (SIP) addresses are free
Where It Falls Behind
- Limited free plan inclusions
- Many VoIP features are missing (call forwarding and voicemail transcription)
- No SMS feature
OnSIP Monthly Pricing
- Free Plan: Free for web call buttons, business hour rules, unlimited internet extensions, and extension dialing
- Basic: $49.95 per account for three auto-attendants, three ring groups, five voicemails, and one call recording
- Unlimited: $18.95 per user for a minimum of five users and unlimited access to auto-attendants, call recording, ring groups, voicemail, standard call minutes, and hold music
OnSIP is a convenient mobile softphone solution for solopreneurs who don’t have the budget for a full-featured business phone. It has an absolutely free plan that lets you make and receive unlimited calls from phone numbers, extensions, and session initiation protocol (SIP) addresses. Additional features, such as call blocking, auto-attendant, and voicemail boxes, can be purchased a la carte.
If you want to upgrade your free plan, OnSIP has two payment options—metered and unmetered. The metered plan is built for teams with a lower call volume and who don’t need complete phone features and call minutes. The unmetered plan, on the other hand, provides unlimited access to call minutes and business phone features, such as auto-attendants, hold music, and call recording.
OnSIP doesn’t directly offer SMS services, so if your business relies on text messaging for team and customer communications, choose Grasshopper. On top of its unlimited calls and text, this provider offers an instant response feature that lets you automatically respond to new callers while you’re unavailable.
OnSIP Features
View the phone availability of your contacts in the OnSIP mobile app. (Source: OnSIP)
- Voicemail: Get a complete visual list of new and saved voicemails on a single screen. Listen to voicemails, make a callback, and delete previous voicemails.
- Admin portal: OnSIP’s easy-to-use web admin interface makes it easy to add phone numbers, configure users, monitor availability, and get in-depth call reports.
- Personal ring strategy: Set the duration of your ring time and where to redirect a call if it’s not answered.
Line2: Best Lightweight VoIP iPhone App
Overall Score:
3.55 / 5
What We Liked
- Limited call features
- Budget-friendly pricing
- Toll-free and vanity numbers available
Where It Falls Behind
- Clunky and outdated app design
- Frequent downtimes
- Inaccurate transcriptions
Line2 Monthly Pricing*
- Monthly: $15.99 for unlimited calls to the U.S. and Canada, SMS/MMS, call blocking, voicemail transcription, call screening, voicemail recordings, call forwarding, and caller ID
*Annual billing is available
Line2 is a full-featured virtual phone system that lets you set up a second phone number with access to unlimited calls, texts, and voicemail features—all for an affordable price. Its lightweight iOS app has a file size of only 51.8MB, ideal for users with limited storage space. This is relatively smaller in comparison to other VoIP apps like RingCentral MVP (364MB) and Vonage (193MB).
Unlimited VoIP calls and texts across the U.S. and Canada are included in the monthly plan, while phone calls and SMS between Line2 users are completely free. Best of all, Line2 offers Wi-Fi texting, so you can receive messages without consuming your mobile data. Plus, you can set up multiple phone numbers (local, toll-free, and vanity) on your device.
Despite Line2’s noteworthy features, previous users have complained about glitches, bugs, and frequent downtimes. If you’re looking for a highly reliable VoIP solution, check out Dialpad, which offers 100% uptime to its enterprise users aside from its AI-powered mobile app.
Line2 Features
Line2 lets you easily choose your own business number to separate your work and personal communications. (Source: Line2)
- Call screening: Screen incoming calls and automatically answer with a prerecorded message. You have the option to accept, decline, or send the caller to voicemail.
- Voicemail recordings: Record and save voicemails so you can listen to them at a later time. You’ll receive an instant app notification for every voicemail you receive.
- Call forwarding: Forward calls to an alternate phone number or create a list of forwarding numbers called in sequence or simultaneously so you won’t miss a call.
Frequently Asked Questions (FAQs)
VoIP providers allow users to set up call forwarding to ensure all incoming calls are attended. You have the option to reroute it to an alternative phone number, a separate device, or voicemail. Either way, the caller will never get a disconnected message.
Yes. While a VoIP mobile app is convenient, it requires a reliable internet connection to run smoothly. Even if a VoIP provider supports HD voice calling, staying in an area with a weak connection will negatively affect the overall call experience.
No. VoIP platforms can run as a downloadable app for desktop or mobile or in a web browser. Since a VoIP service lives in the cloud, a reliable internet connection will help you connect to the system even without connecting to physical equipment.
How We Evaluated the Best VoIP Apps for iPhone
We reviewed dozens of VoIP apps for iPhone and compared them based on pricing, core features, ease of use, and customer support. To come up with an expert review, we tested each iOS application ourselves and considered software reviews from recent users.
Learn how we evaluated the best VoIP apps for iPhone by clicking on the tabs below:
20%
Pricing
20%
General Features
20%
Advanced Features
10%
Ease of Use
10%
Customer Support
20%
Expert Score
20% of Overall Score
We examined each provider’s monthly plans, including discounts for annual billing and volume purchases, free trial length, and money-back guarantees. We also considered the number of inclusions of each package, such as unlimited calling, SMS, and voicemail.
20% of Overall Score
We gave points for VoIP iPhone apps offering unlimited calls to the U.S. and Canada, audio/video conferencing, and a high uptime service level agreement (SLA). We also favored iOS apps that offer a separate inbox for work-related communications.
20% of Overall Score
We rated applications with an auto-attendant, schedule-based routing, and vanity phone numbers higher than those without. We also awarded points for international calling, international phone numbers, integrations, and interactive voice response (IVR).
10% of Overall Score
We assessed each provider’s usability by testing it ourselves and checking user reviews from reliable review websites. We looked for apps that allow users to set up their VoIP system with as little learning curve as possible.
10% of Overall Score
We checked each VoIP provider’s support channels, including phone, live chat, email ticketing, help desk, and community forum. Additional points are given if all support channels are available 24/7.
20% of Overall Score
We based our expert score on the overall value for money and popularity. We also judged each app based on its ease of use and unique features that gave it an edge over other competitors.
*Percentages of overall score
Bottom Line
VoIP apps allow business owners, teams, and employees to connect to their office phone system from anywhere. On top of sophisticated phone features, a VoIP solution keeps personal and professional communications separate without getting another device. A VoIP app for iPhone seamlessly works with iOS devices, allowing users to streamline their business communications.
Vonage is our top pick for the best VoIP app for iPhone. All plans include 43 business phone system features, an intuitive mobile app, and basic third-party integrations. Its a la carte pricing options make it easy to add features and integrations to your plans as your business grows. Contact its sales team to determine the best plan for your business needs.
