Battery Watcher vs MySensor²
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Battery Watcher
Monitor your iPhone's battery status directly from your Apple Watch. View current levels, historical data, and receive alerts for a full charge. Perfect for quick checks without needing your phone.
- iPhone battery status on Apple Watch
- Watch face complications
- 24-hour battery history
- Visual charge history graph
- Full charge alerts
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Battery Watcher gives you the status of your iPhone battery right on your Apple Watch! Battery Watcher now supports watchOS 5 and Apple Watch Series 4!! Battery Watcher now leverages the new Apple Watch background processing to keep your Apple Watch up to date with the latest battery level of your iPhone. New Features: - Complications: Check the status of your iPhone battery right from your watch face! - Time Travel: Now you can look back and see what the power level of your iPhone was in the last 24 hours - Battery Level Premium: Upgrade to Battery Level Premium and get the charge history of iPhone battery right on your watch in an easy to use visual graph. Use the Digital Crown to view all the iPhone battery level history for the past 24 and 72 hours! - Full Charge Alert: If you purchase Battery Level Premium, you can receive an alert when your iPhone reaches full charge! For those that want to know how much battery life your iPhone has left without pulling it out of your pocket, this app is for you!
MySensor²
Effortlessly monitor the battery levels of all your cycling sensors, including power meters, heart rate monitors, and shifters, in one convenient app. Get quick access to battery status via desktop widgets or Apple Watch Stacks without needing to open the application.
- All sensor batteries in one place
- Power meter battery status
- Heart rate monitor battery status
- Speed and cadence sensor monitoring
- Electronic shifter battery checks
- Home screen widgets
- Apple Watch Stack support
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Have you ever experienced these frustrations? - Discovering your power meter is dead mid-ride - Needing to open multiple apps to check all sensor batteries - Wishing to effortlessly monitor sensor battery levels MySensor² solves these problems for you: 1. One-Stop Battery Management: Quickly view all sensor battery levels in a single interface, including: - Power meters - Heart rate monitors - Speed and cadence sensors - Electronic shifters - Other Bluetooth devices with battery service support 2. Convenient Desktop Widget: Check connected sensor battery status directly from your home screen or Apple Watch Stack, no need to open the app Use MySensor² to make your cycling experience smoother and worry-free! Privacy Policy https://www.floattower.tech/privacy-en-mysensor.html Terms Conditions https://www.floattower.tech/terms-en-mysensor.html
Screenshots
Verdict
The clearest difference is ratings volume: Battery Watcher at 338 against MySensor²'s 4. MySensor²'s advantage is rating (4.8 vs 4.5). 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. Battery Watcher sells 1 one-off in-app purchase and MySensor² sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
MySensor² holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Battery Watcher has 338 ratings behind it against 4, so its average is the more settled of the two.
Battery Watcher ships an update fortnightly, MySensor² monthly. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.
| Parameter | Battery Watcher | MySensor² |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (338 ratings) | 4.8 (4 ratings) — better |
| Positive reviews | 70.7% of reviews | — |
| Number of ratings | 338 — better | 4 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.6 | 17.5 — better |
| Further details — not scored | ||
| Size | 2 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Slackerz Inc | 兴华 范 |
Customer experience
Battery Watcher
MySensor²
Bugs and requests
Battery Watcher
Reported bugs
9 issues- App fails to communicate with iPhone from Watch
- Battery graphic jumps out of place on iPhone app
- Complication doesn't update without opening app
- Inaccurate battery percentage readings
- App disconnects from Watch frequently
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- Premium full-charge notification doesn't work
- App crashes or becomes unresponsive after updates
- White battery icon stuck in corner with display glitches
- Crown interaction doesn't affect graphing as advertised
Requested features
8 requests- Low battery mode functionality
- Battery percentage viewing on iPhone (currently watch-only)
- Custom notification alerts at user-defined battery percentages
- User-configurable logging intervals for battery tracking
- Settings menu to customize watch display and disable text clutter
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- Complication support for watch face
- Glance feature for quick access
- Better customization options for watch app display
MySensor²
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Battery Watcher
- Battery Watcher Premium$1.99
MySensor²
- Premium (Weekly)$2.997 Days
- Premium (Monthly)$6.991 Month
- Premium (Annual)$19.991 Year
- Premium (Lifetime)$39.99
Questions
Is Battery Watcher free?
Is MySensor² free?
Which has better reviews, Battery Watcher or MySensor²?
Do Battery Watcher or MySensor² have ads?
Which is updated more often, Battery Watcher or MySensor²?
Other comparisons
