Sentinel vs CallMe Set
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sentinel
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Manage and unlock your SENTINEL connected bicycle lock with the SENTINEL app. SENTINEL is the first truly connected smart bicycle lock: the perfect marriage of smart and tough. Unlock your bike with the SENTINEL app or with one of the supplied RFID key fobs. Get tamper alerts in the app and track your bike with the built in GPS. Share your bike with friends or even remotely unlock your bike via the app. The lock will independently notify your emergency contact when a crash is detected. Easily manage all the lock functions with the SENTINEL app. SENTINEL is designed in Belgium and is built to last with high quality components. Get your Sentinel lock at: www.sentinel-lock.com
CallMe Set
Configure and manage smart devices during initial setup and beyond. Easily replace devices, update firmware, and perform functional tests to ensure optimal performance.
- Initial device configuration
- Change configuration parameters
- Replace broken devices
- Upgrade device firmware
- Perform functional tests
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Through the app you can perform the first device configuration during installation, change later the configuration parameters to adapt to the new needs of the user, easily replace a broken device without having to reconfigure it and upgrade the device when a new firmware version containing bug fixing or new features is released. Furthermore the app allows you to perform a functional test after the configuration to ensure the proper device functioning.
Screenshots
Verdict
The clearest difference is update cadence: CallMe Set at every 2 days against Sentinel's every 7 months. Sentinel's advantage is iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Sentinel ships an update every 7 months, CallMe Set every 2 days. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.
| Parameter | Sentinel | CallMe Set |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 7 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 33 MB | 100 MB |
| Age rating | 4+ | 17+ |
| Developer | Mobit Belgium bvba | URMET SpA |
In-app purchases
Sentinel
No in-app purchases
CallMe Set
No in-app purchases
