RemiPBX vs UltraTone Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RemiPBX
This is a SIP softphone application that works with the RemiPBX platform. It offers features like push notifications, HD voice and video calls, and free calling between its users.
- SIP softphone functionality
- Push notifications
- HD voice and video
- Free calling between app users
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RemiPBX's accompanying softphone app to the RemiPBX platform. A SIP softphone app that supports push notifications, HD voice and video, and more. In addition to this, RemiPBX's app provides • Free calling between app users
UltraTone Connect
Make free VoIP or low-cost international calls using WiFi or cellular data. Offers a callback feature for unstable connections and provides clearer audio at a fraction of traditional SIM card costs.
- Free VoIP calls
- Low-cost international calls
- WiFi and 4G/5G connectivity
- Callback Request feature
- Superior audio quality
- Cost-efficient alternative
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UltraTone enables you to make free VOIP or low cost international calls over the internet, utilizing either WiFi or 4G connectivity and leveraging the high-speed potential of 4G/5G technology. The 'Callback Request' feature ensures that you can place crucial calls even when your internet connection is unstable, offering a cost-efficient alternative to traditional calling methods. On average, UltraTone is 80% less expensive compared to calls made using a SIM card. Additionally, it delivers superior and faster connections, providing much clearer audio quality during calls.
Screenshots
Verdict
The clearest difference is rating: UltraTone Connect at 5.0 against RemiPBX's 4.2. UltraTone Connect also leads on update cadence (every 3 weeks vs every 5 months) and iOS requirement (12.0 vs 16.0). RemiPBX's advantage is in-app purchases (none vs 1) and ratings volume (30 vs 5). On price, review sentiment, ads and device support 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. UltraTone Connect sells 1 one-off in-app purchase. RemiPBX asks for nothing beyond the download.
UltraTone Connect holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: RemiPBX has 30 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
RemiPBX ships an update every 5 months, UltraTone Connect every 3 weeks. The most recent releases landed on October 22, 2026 and September 17, 2026 respectively.
| Parameter | RemiPBX | UltraTone Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (30 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 30 — better | 5 |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 115 MB | 44 MB |
| Age rating | 17+ | 4+ |
| Developer | RemiPBX, Inc. | BasketAsia Sdn. Bhd. |
Customer experience
RemiPBX
UltraTone Connect
In-app purchases
RemiPBX
No in-app purchases
UltraTone Connect
- 12.99 USD Calling Credit$12.99
