Ublux vs CallHarborUC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ublux
This app provides a VOIP calling solution for seamless international communication. It offers free app-to-app calls with high-definition quality and secure discussions. Access international numbers from 160 countries with 24/7 security and data encryption.
- International calling from 160 countries
- Free app-to-app calls
- High-definition call quality
- Secure discussions with data encryption
- Seamless integration with tools
- Scalable call volume
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Stay connected with your contacts on the go. Ublux puts a world-class international call application in your pocket, so you can handle calls anywhere, anytime. Ublux adapts to your needs, allowing you to make and receive calls seamlessly, integrating with your favourite tools. Apart from the typical functionalities, our complimentary VOIP application allows you to use more. Top-notch, free app-to-app calls. Enjoy high-definition calls and ensure secure discussions. Access international numbers from 160 countries and enjoy 24/7 security and data encryption. Scale your call volume up or down effortlessly. Experience Ublux for instant access, flexibility, and enhanced communication.
CallHarborUC
This app allows you to use your professional phone extension on your mobile device. Make and receive calls from anywhere, and enjoy free in-app calls with other users.
- Carry your extension on mobile
- Make and receive calls on the go
- Log in with existing credentials
- Free in-app calls among users
- High-quality audio
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Transform your communication with the CallHarborUC app. Seamlessly carry your extension wherever you go, enabling you to make and receive calls on the move. With just a few taps, log in using your CallHarbor credentials to instantly access your extension. Stay connected and in control of your professional communications effortlessly with CallHarborUC. With our application, you can enjoy more than just the standard VoIP features. We enable free in-app calls among application users, utilizing top-notch audio quality.
Screenshots
Verdict
The clearest difference is rating: Ublux at 5.0 against CallHarborUC's 3.3. CallHarborUC's advantage is ratings volume (6 vs 1). On price, update cadence, 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.
Ublux holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: CallHarborUC has 6 ratings behind it against 1, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 7 months. The most recent releases landed on September 23, 2026 and June 8, 2026 respectively.
| Parameter | Ublux | CallHarborUC |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.3 (6 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 7 months | Every 7 months |
| 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 | 116 MB | 100 MB |
| Age rating | 17+ | 4+ |
| Developer | Ublux | Active Solutions Group, Inc. |
Customer experience
Ublux
CallHarborUC
In-app purchases
Ublux
No in-app purchases
CallHarborUC
No in-app purchases
