A great VoIP app for iPhone allows you to make VoIP calls from the same device that you would normally use to make personal calls. These apps eliminate the need for work phones and can also allow you to use local or national numbers (1-800, 1-888, and so on) for your business. Most VoIP phone providers include a mobile app, but this feature can be limited to higher-tiered plans or offer limited functionality for iPhone users.
For that reason, we looked for some of the best voice-over-internet-protocol (VoIP) apps for iPhone and evaluated their effectiveness at helping you make all aspects of your business more mobile.
VoIP App for iPhone
(Best overall) Business owners looking for an app with a well-rounded suite calling features for their iPhones
Organizations looking for the most extensive mobile feature set including iPhone-specific benefits like Siri integration
Business people that need multiple inbound and outbound numbers that are accessible from a single private iPhone
Businesses that need to easily enhance the mobile experience of an existing SIP-based calling plan
Business owners that are looking for a free or low-cost VoIP system with competitive dialing features
How We Evaluated VoIP Apps for iPhone
We searched out several of the best VoIP apps for iPhone that offered various features and weighed them against each other. Since VoIP apps vary based on the size of the organization and the functionality, we evaluated multiple iPhone app types so that we could present you with a high degree of variability. Based on the needs of small businesses looking for an agile VoIP communication system on iOS, we used the following criteria for our ranking system:
30% of Overall Score
This is one of the criteria that’s most important for small businesses, so we ranked the app based on which services come under and over a $15 price point, per user, per month. We then took a look at each app and determined which had the best spread of subscription options so that you can scale your communications profile.
30% of Overall Score
We considered each app’s ability to make and receive calls as well as other helpful features like how each handled voicemail greetings and contact lists, and if they included an auto-attendant to help route your call when you can’t take a call. We also looked at international calling capability as business is becoming more global. We evaluated the capability of each app to reach distant markets and even its ability to provide local numbers in these foreign countries.
30% of Overall Score
SMS and MMS features: Texting is how many people get quick, easily scannable information, so a good iPhone app for VoIP will have this as a built-in feature. Having both SMS (standard texting) and MMS (image and video messages) functionality is important for most businesses, so we evaluated these apps based on texting features.
We also compared service level agreements (SLA) for uptime, as having no service for extended periods can lead to loss of business. The top end of the spectrum tends to be a 99.999% uptime guarantee, so we established this as a gold standard and determined which apps succeeded or didn’t quite hit the mark.
Available subscription plans: Having multiple subscription plans helps you scale your services as your business grows.
10% of Overall Score
In addition to comparing standout features to determine value, we also considered the broader user experience. We looked for apps with high overall customer reviews and higher (above 3.5) App Store ratings. While the App Store doesn’t publish download counts, you can gauge an app’s popularity based on the number of reviews and its overall star rating when compared to the number of reviews. We considered an app as popular if it had over 5,000 reviews and an average rating of over 3.5 stars.
RingCentral: Best Overall VoIP iPhone App for Small Business
During our research, when comparing features based on the above criteria, we found RingCentral to be the best overall VoIP phone system for iPhone thanks to it having the most well-rounded experience. Some of its most compelling features are its four-plan system, its unified communications options, and its ability to make international calls. Additionally, features like call flip, integrations with customer relationship managers (CRMs) and popular business tools, and analytics are also available, making it one of the best small business VoIP services overall.
RingCentral Pricing & Features
With this provider, you have four pricing tiers that allow you to scale your dialing and unified communications features with the size and needs of your business. Each tier has published pricing that actually becomes cheaper if you opt to pay annually. Here’s a look at the tiers:
$29.99 per user, per month (when billed monthly)
$37.99 per user, per month (when billed monthly)
$44.99 per user, per month (when billed monthly)
$59.99 per user, per month (when billed monthly)
$19.99 per user, per month (when billed annually)
$27.99 per user, per month (when billed annually)
$34.99 per user, per month (when billed annually)
$49.99 per user, per month (when billed annually)
RingCentral is very useful for those businesses that need integrations; you have basic integrations for things like Slack and Office 365 as well as integrations at higher plans for the top CRMs. Like many of the best business phone systems, RingCentral also has 24/7 support via phone, but it’s only available at the Standard tier and above.
Here are a few of RingCentral’s additional features:
- Video conferencing available in the iPhone app starting at Standard
- Up to 24-hour meetings
- Team messaging available at every tier level
Vonage Business Communications: Best for Broadest Mobile Feature Set
Out of the gate, Vonage Business Communications (VBC) shines as an iPhone app due to its vast array of features. In total, the app boasts over 50 calling and business features that include options like call flip, follow me, and call transfers in addition to being fully compatible with Siri. While it may be slightly more expensive than other apps for iPhone that provide VoIP calling, VBC offers a number of extras, making it especially valuable for companies experiencing steady growth.
VBC also has more than 8,000 ratings on the App Store—with the majority of the reviews being positive. In fact, the overall score there is 4.7.
Vonage Business Communications Pricing & Features
VBC has three plan tiers, and each has the features of the previous tiers with a few added options. Here’s a breakdown:
$19.99 per user, per month
$29.99 per user, per month
$39.99 per user, per month
It’s worth noting that Vonage fully publishes the pricing for all tiers, which is useful for business owners looking for a full spread of information. VBC integrations include options for Salesforce, Google Workspace, Clio, Microsoft Dynamics, Office 365, Microsoft Teams, and Zendesk, among others. This is particularly business-friendly, and combined with the app’s existing feature list, makes VBC a very compelling option.
Here are a few of Vonage Business Communications’ additional features:
- On-demand and companywide recording is available through VBC for an additional $4.99 per month (15 hours)
- International calling plans are available
Line2: Best VoIP iPhone App for Multiple Virtual Numbers
Line2 has been present on the App Store for more than a decade and has garnered many diehard fans who cite the app’s reliability and convenience. Similar to other virtual phone service providers, Line2 works by giving you a phone number that forwards calls to an existing line. However, the app shines by supporting up to five numbers on a single iPhone.
This is useful for those businesses that have local numbers in some areas and toll-free numbers that serve others. Callers trying to reach your business from either will be able to reach you on your smartphone without the need to divulge your personal number.
Line2 Pricing & Features
Line2 has three pricing plans, and all grant unlimited calls and texts. Like a few other apps in this guide, they also provide savings for users who want to pay annually rather than month to month. Similar to most providers, by default, each plan has the features of the previous one. Here’s a look at their tiers:
$14.99 per user, per month (when billed monthly)
$19.99 per user, per month (when billed monthly)
$24.99 per user, per month (when billed monthly)
$12.49 per user, per month (when billed annually)
$16.66 per user, per month (when billed annually)
$20.83 per user, per month (when billed annually)
Like RingCentral, Line2 is a convenient app for those who need to make international calls. While they don’t have a dedicated plan for unlimited calling internationally, they have low rates for calling several countries. Pricing for these calls can be found on their international rates page international rates page. Features like call blocking, call whisper, and call screening are basic to all tiers with Line2.
Here are a few of Line2’s additional features:
- Prerecorded call greetings
- Call screening and call blocking
- Advanced usage reports with the Business Plan
Bria Mobile: Best App for Supplementing SIP Provider Plans
Bria is a session initiation protocol (SIP)-based calling solution that provides users with a highly secure system with several business-focused features. It is designed to supplement an existing phone service, giving users access to more robust mobile functionality without requiring you to subscribe to a higher-phone service calling plan. For example, the app has several features, such as the ability to assign images to callers and ringtones so that you quickly identify them.
This makes it different from other standalone VoIP apps like virtual phone systems that act more like call forwarding services. Bria is also much more inexpensive than other iPhone VoIP providers, but can only be used with other SIP systems.
Bria Mobile Pricing & Features
One of the standout features of Bria Mobile is the availability of four pricing tiers, even including a free tier for solo entrepreneurs who need a VoIP solution. While Bria Solo Free is pretty skimpy when it comes to features, it still makes it easy to call customers, providing you have a SIP server or a SIP-based VoIP provider.
Additionally, having four pricing tiers is very useful for businesses experiencing growth. Similar to RingCentral, this provides a suite of options for the smallest businesses to the larger enterprise clients. Here’s a breakdown of the four available plans:
Bria Solo Free
$0 per user, per month
$2.95 per user, per month (billed annually)
$4.95 per user, per month (billed annually)
Pricing by quote
Here are a few of Bria Mobile’s additional features:
- Multiple call support so that you switch between active calls, allowing you to merge, split, and transfer calls from a conference
- App support for Bluetooth devices such as standard headphones and AirPods
Google Voice: Best Low-cost VoIP iPhone App
For those with existing Google accounts, Google Voice provides a simplified VoIP solution that has features like a multilevel auto-attendant and ring groups that are accessible from your iPhone. While there is hardware support for Google Voice using Polycom devices, the platform really does work better on smart devices like your iPhone. With it, you get a free local phone number that’s usable for up to 10 employees. This works well for those on small remote teams, and features like the app’s usage of Google artificial intelligence (AI) will ensure that spam calls are filtered and voicemails are transcribed so that you read them on your iPhone’s screen.
Google Voice Pricing & Features
As we stated in our Google Voice review, Google Voice is absolutely free for those using personal accounts, but those using Google Workspace are charged for the service. Fortunately, Google Voice is offered in three distinct plan tiers that, of course, grant an increasing number of business-centric features. Here’s a quick look at what’s available:
$10 per user, per month (billed monthly)
$20 per user, per month (billed monthly)
$30 per user, per month (billed monthly)
Here are a few of Google Voice’s additional features:
- For users who wish to call on desk phones in addition to their iPhones, Google Voice has desk phone support
- Missed call email alerts are also available
A VoIP application on your iOS device provides an easy way to stay in contact with customers without the need to use your personal information. This means that you have business-life compartmentalization, and you also will have the business call support features you need to ensure happy customers. While it’s hard to find a one-size-fits-all solution, you can usually find software that will meet your needs with the right level of due diligence. When selecting a VoIP app for your iPhone, ask yourself these questions to find the one that’s the best fit:
- Do I need international calling?
- How important is uptime?
- What’s my budget?
- What calling features do I need to manage my customers?