Battery Watcher vs Battery Saver
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!
Battery Saver
This app helps you monitor your device's battery health and predict its remaining runtime. It offers charging reminders and maintenance tips to extend battery life. Enjoy beautiful charging screensavers while your device powers up.
- Predict battery runtime
- Full charge reminders
- Battery maintenance tips
- Charging screensavers
- Detailed battery status
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Battery Saver - Power Master is a simple but professional tool to check battery status. Battery Saver can visualize the details of battery precisely and protect your battery. Download now ！ -Predict the runtime of battery : no more concern about power off -Remind you to stop when the battery is fully charged -Tips for battery maintenance -Beautiful screensavers when your iPhone is charging Auto-renewable subscriptions - $0.99 per week - $6.99 per year - $9.99 for Lifetime Rules that apply to all subscriptions: – Payment will be charged to iTunes Account at confirmation of purchase – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – Account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable * Terms of Use:https://batterysaverpro.cometprivacy.com/privacy * Privacy Policy:https://batterysaverpro.cometprivacy.com/terms * Contact us:https://batterysaverpro.cometprivacy.com/support
Screenshots
Verdict
The clearest difference is rating: Battery Watcher at 4.5 against Battery Saver's 4.1. Battery Watcher also leads on update cadence (fortnightly vs every 2 months). Battery Saver's advantage is review sentiment (87% vs 71%) and iOS requirement (11.0 vs 18.6). On price, ratings volume, 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 Battery Saver sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Battery Watcher holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 340 and 228 respectively. Written reviews complicate that: 71% of Battery Watcher's written reviews are positive against 87% of Battery Saver's, so the app with the better star average is not the one people write more warmly about.
Battery Watcher ships an update fortnightly, Battery Saver every 2 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.
| Parameter | Battery Watcher | Battery Saver |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (340 ratings) — better | 4.1 (228 ratings) |
| Positive reviews | 70.7% of reviews | 87.2% of reviews — better |
| Number of ratings | 340 — better | 228 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 18.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Slackerz Inc | Binary Bridge HK Limited |
Customer experience
Battery Watcher
Battery Saver
User reviews
Battery Watcher
From 340 App Store ratingsWhat we love
- 👍 Clean and intuitive interface
- 🎯 Accurate battery percentage tracking
- ⌚ Seamless Apple Watch integration
- 🚀 Minimal battery drain on device
- 📊 Battery history and graphing features
Room to improve
- 🐛 Frequent synchronization issues between iPhone and Watch
- 🔄 App requires manual refresh to show current data
- ⏰ Inaccurate time displays
- 🚫 Premium features feel limited or underwhelming
- 📉 Battery percentage discrepancies between app and device
Battery Saver
From 228 App Store ratingsWhat we love
- 🚀 Charges phone fast
- 💡 Useful battery and storage management features
- 👍 Simple and easy to use
- 🚀 Boosts RAM and frees up storage
Room to improve
- 🐛 Doesn't work as advertised
- 🔋 Drains battery instead of saving it
- 🔒 Privacy concerns with accessing photos
- 💰 Paid version doesn't work as expected
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
Show 4 moreShow fewer
- 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
Show 3 moreShow fewer
- Complication support for watch face
- Glance feature for quick access
- Better customization options for watch app display
Battery Saver
Reported bugs
3 issues- App crashes or freezes
- Lifetime purchase not activated
- Ads still shown after paid upgrade
Requested features
3 requests- Battery usage breakdown
- Dark mode option
- Improved compatibility with newer iOS versions
In-app purchases
Battery Watcher
- Battery Watcher Premium$1.99
Battery Saver
- Monthly3 Days trial$0.991 Month
- Yearly3 Days trial$6.991 Year
- Remove AD$0.99
- LifeTime$9.99
Questions
Is Battery Watcher free?
Is Battery Saver free?
Which has better reviews, Battery Watcher or Battery Saver?
Do Battery Watcher or Battery Saver have ads?
Which is updated more often, Battery Watcher or Battery Saver?
Other comparisons
