AbtoVoIPClient vs XonTel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AbtoVoIPClient
This application provides voice and video calling capabilities, along with text chat, for users with SIP accounts. It supports direct calls between clients and offers secure communication options. The app integrates with native iOS call features for a seamless user experience.
- Voice calls
- Video calls
- Text chat
- Works with all popular SIP servers
- Direct calls between clients
- Secure calls using SRTP/ZRTP
- CallKit integration
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ABTO Software's VoIP SIP softphone. Can be used to call sip numbers and landline numbers (if sip provider has this option). Features: voice calls; video calls; text chat (based on SIP MESSAGE request); works with all popual SIP servers, including Asterisk/FreeSwitch; make direct calls between clients without SIP server; allows to use UDP/TCP/TLS protocols for SIP transport; ability to make secure calls using SRTP/ZRTP; supports STUN/ICE; IPv6 support; CallKit - native incoming call UI and system integration of VoIP calls; 2 simultaneous calls; call conferencing; attended transfer.
XonTel
This application provides mobile VoIP software for making calls. It functions as a standalone softphone, requiring a SIP server or a subscription with a SIP-based VoIP provider to enable calling capabilities.
- Mobile VoIP software
- Standalone softphone
- SIP server integration
- VoIP provider subscription required
- Supports iPhone, iPad, iPod
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XonTel is mobile VoIP software products and solutions. IMPORTANT NOTE: XonTel is a standalone softphone and not a VoIP service. A SIP server or subscription with a SIP-based VoIP provider is required to make calls.
Screenshots
Verdict
The clearest difference is review sentiment: XonTel at 100% against AbtoVoIPClient's 67%. XonTel also leads on rating (4.0 vs 3.7) and update cadence (every 5 weeks vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
XonTel holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 67% of AbtoVoIPClient's written reviews are positive against 100% of XonTel's.
AbtoVoIPClient ships an update every 5 months, XonTel every 5 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | AbtoVoIPClient | XonTel |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 5 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Sviatoslav Volodymyruvych Litynsky Private Enterpreneur | United GULFGATE TRD. CO |
Customer experience
AbtoVoIPClient
XonTel
In-app purchases
AbtoVoIPClient
No in-app purchases
XonTel
No in-app purchases
