OpusTel vs Chess Cloud PBX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpusTel
This app provides a real Swiss international telephone number for secure VoIP calls on iOS devices. It offers HD audio quality, free global calls between users, and call recording capabilities, all with a focus on user privacy.
- Real Swiss international telephone number
- Secure VoIP calls
- HD high-definition audio quality
- Free global calls between users
- Call recording
- Conference calls
- Automatic language selection
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OpusTel OpusTel is the mobile phone App for iPhone, iPod and iPad, permitting one to use a real Swiss international telephone number, e.g. 0041 41 520 60 00. It allows one to make and to receive secure VoIP calls from any iOS device using 5G/4G/3G/UMTS or Wi-Fi Internet connectivity. It was developed with the focus on privacy. Features: 1. Secure incoming and outgoing calls 2. Incomming calls are free of charge (no roamingcosts) 2. HD high-definition audio quality with the G722 and Opus codec 3. Free global calls from OpusTel to OpusTel 4. Easy transfer calls to any telephone number 5. Ability to record incoming and outgoing calls 6. Conference calls 7. Automatic language selection based on handy language (15 languages like EN, DE, CN, FR, ES, IT ...)
Chess Cloud PBX
This communication app offers a flexible, scalable telephony solution for businesses. It allows users to manage office functions, join conferences, and seamlessly transfer calls between devices, enabling work from any location.
- Scalable pay-as-you-grow solution
- Work from anywhere with any device
- Office functions on the go
- Dial into conferences remotely
- Seamless call handover to desktop
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Work from Anywhere! Easy communication with the next generation of telephony. Managing your communications with Chess Cloud PBX enables a scalable pay-as-you grow solution, providing absolute flexibility and allows you to operate from anywhere with any device. Always have office functions with you. Dial into conferences from any location. Seamlessly hand over a call to your desktop app. Unlock a world of benefits for your business with Chess Cloud PBX.
Screenshots
Verdict
The clearest difference is rating: OpusTel at 5.0 against Chess Cloud PBX's 4.0. OpusTel also leads on ratings volume (6 vs 1) and iOS requirement (16.0 vs 18.0). Chess Cloud PBX's advantage is update cadence (every 3 months vs every 14 months) and review sentiment (100% vs 80%). On price, ads, in-app purchases and monetization model 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.
OpusTel holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: OpusTel has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 80% of OpusTel's written reviews are positive against 100% of Chess Cloud PBX's, so the app with the better star average is not the one people write more warmly about.
OpusTel ships an update every 14 months, Chess Cloud PBX every 3 months. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.
| Parameter | OpusTel | Chess Cloud PBX |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 14 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 98 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | OpusTel | Chess ICT Ltd |
Customer experience
OpusTel
Chess Cloud PBX
In-app purchases
OpusTel
No in-app purchases
Chess Cloud PBX
No in-app purchases
