Flextel vs VertiCall
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Flextel
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The Flextel Callback application lets you make calls at low Flextel rates using our amazing Callback service from your mobile, without the instability of VoIP based solutions. To enjoy the benefits, First you will need to get a Flextel phone number from http://www.flextel.com. There are thousands of UK virtual numbers to own and use - some even earn you rewards. Our Callback app features include: - Make phonecalls through the Flextel service. - Present your Flextel number on outbound calls. - Save on calls to hundreds of worldwide destinations - Easy access to contacts - View your FlexCredit balance - Call recording: all recorded phone calls are emailed to you as a sound file for saving or sharing. - This app is compatible with iPhone. For more information about this app and Flextel numbers, please visit http://www.flextel.com.
VertiCall
This mobile app extends your existing phone system, functioning as a virtual extension. Easily manage calls, transfer them to other extensions, and make outbound calls using your work number as the Caller ID without complex network configurations.
- Virtual phone extension
- Call transferring
- Outbound calls with work Caller ID
- Simple login
- No network changes required
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A mobile extension for all VertiCall-compatible phone systems. The app acts like any other extension on your phone system, allowing you to perform common tasks such as transferring calls to another extension or making outbound calls with your work number as the Caller ID. Unlike many other mobile softphones, VertiCall just works. You shouldn't have to change your network or fill out pages and pages of complicated settings. Simply log in with the username and password provided by your phone system vendor, and away you go!
Screenshots
Verdict
The clearest difference is update cadence: VertiCall at every 2 months against Flextel's every 36 months. Flextel's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Flextel ships an update every 36 months, VertiCall every 2 months. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.
| Parameter | Flextel | VertiCall |
|---|---|---|
| Price | Free | Free |
| Positive reviews | โ | 100.0% of reviews |
| Update frequency | Every 36 months | Every 2 months โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | โ | Free |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPod |
| Requires iOS | 11.0 โ better | 13.0 |
| Further details โ not scored | ||
| Size | 5 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | FleXtel | Sipcentric Ltd. |
In-app purchases
Flextel
No in-app purchases
VertiCall
No in-app purchases









