Battery Watcher vs Where's My Battery?
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!
Where's My Battery?
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Where's My Battery? takes the frustration out of managing batteries at home. Whether you're hunting for AAs for the TV remote or checking if you have a spare 9V for the smoke alarm, this app keeps everything organised in one place. TRACK YOUR BATTERY STOCK Add the batteries you have at home — AA, AAA, C, D, 9V or custom types — and see at a glance how many you have. Get low stock warnings before you run out. MANAGE YOUR DEVICES Log every device in your home and which batteries it uses. Add a photo so you can identify devices instantly. Never buy the wrong batteries again. BUY BATTERIES INSTANTLY Running low? Browse and buy batteries directly from within the app. No need to switch apps or search online — get what you need with a tap. BUILT FOR REAL LIFE • Tracks rechargeable and non-rechargeable batteries separately • Custom battery types for specialist devices • Clean, simple design — no clutter • Works completely offline, no account needed • No personal data collected Download Where's My Battery? and always know exactly what's in that kitchen drawer.
Screenshots
Verdict
The clearest difference is in-app purchases: Where's My Battery? at none against Battery Watcher's 1. Where's My Battery? also leads on iOS requirement (15.1 vs 18.6). Battery Watcher's advantage is ads (none vs shown). On price, update cadence 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. Battery Watcher sells 1 one-off in-app purchase. Where's My Battery? asks for nothing beyond the download.
Battery Watcher ships an update fortnightly, Where's My Battery? every 2 weeks. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.
| Parameter | Battery Watcher | Where's My Battery? |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (340 ratings) — better | — |
| Positive reviews | 70.7% of reviews | — |
| Number of ratings | 340 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Slackerz Inc | Steven Mason |
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
Where's My Battery?
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Battery Watcher
- Battery Watcher Premium$1.99
Where's My Battery?
No in-app purchases
Questions
Is Battery Watcher free?
Is Where's My Battery? free?
Do Battery Watcher or Where's My Battery? have ads?
Which is updated more often, Battery Watcher or Where's My Battery??
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