OpusTel vs sipcall
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 ...)
sipcall
This SIP client allows mobile users to utilize their landline number on the go. It offers features like push notifications for battery efficiency, call recording, and HD voice codecs. The app is free for existing customers and integrates with Microsoft 365 contacts.
- Push notifications for battery life
- Background app execution
- HD voice codecs
- Call recording
- Microsoft 365 contact integration
- Video telephony
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Die sipcall-App wurde für mobile Benutzer entwickelt. Sie ist ein SIP-Client mit vielfältigem Funktionsumfang. Die App steht exklusiv für sipcall.ch-Kundinnen und -Kunden kostenlos zum Download bereit. Mit der praktischen App für Smartphones nutzen Sie Ihre Festnetz-Rufnummer auch unterwegs. Funktionen: • Push-Benachrichtigungen für hohe Akku-Laufzeit • App kann im Hintergrund ausgeführt werden • Besetztanzeige (kompatibel mit allen Hard-/Softphones) • Kurzwahlen • Exzellente Gesprächsqualität mit HD-Codecs • Hintergrundgeräusch-Unterdrückung • Weiterleitungen mit oder ohne Rücksprache • Telefon-Konferenzen • Gesprächsaufzeichnung • Voicebox-Benachrichtigungen • Nicht-stören-Funktion (DND) • Video-Telefonie mit H264- und VP8-Codecs • Bluetooth-Unterstützung • Microsoft 365 Kontakt-Integration • Konfigurierbare Klingeltöne • Einfache Provisionierung mittels QR-Codes • SIP-Log-Auswertungen Bitte beachten Sie, dass einige WLAN- und Mobilnetz-Betreiber den SIP- oder RTP-Verkehr blockieren und daher die Nutzung der sipcall-App nur eingeschränkt möglich ist. Bei der Nutzung der sipcall-App über das mobile Datennetz können eventuell Gebühren Ihres Mobile-Anbieters anfallen.
Screenshots
Verdict
The clearest difference is review sentiment: OpusTel at 80% against sipcall's 25%. OpusTel also leads on rating (5.0 vs 4.2). sipcall's advantage is update cadence (every 6 weeks vs every 14 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.
OpusTel holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 6 and 9 respectively. Written reviews point the same way: 80% of OpusTel's written reviews are positive against 25% of sipcall's.
OpusTel ships an update every 14 months, sipcall every 6 weeks. The most recent releases landed on August 29, 2026 and September 17, 2026 respectively.
| Parameter | OpusTel | sipcall |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | 4.2 (9 ratings) |
| Positive reviews | 80.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 6 | 9 — better |
| Update frequency | Every 14 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 98 MB | 116 MB |
| Age rating | 4+ | 17+ |
| Developer | OpusTel | Backbone Solutions AG |
Customer experience
OpusTel
sipcall
In-app purchases
OpusTel
No in-app purchases
sipcall
No in-app purchases
