Battery Watcher vs PhoneBattery
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
Read full descriptionHide full description
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!
PhoneBattery
This app displays your iPhone's battery level directly on your Apple Watch. Avoid constantly checking your phone with quick glances at your wrist, perfect for workouts, commutes, or when your phone is just out of reach.
- iPhone battery level on Apple Watch
- Smart battery notifications
- Apple Watch complications
- Alternative app icons
- Clean and simple interface
Read full descriptionHide full description
PhoneBattery is the tiny little app that solves a surprisingly annoying problem How much battery is left on your iPhone? And why do you need to dig it out of your pocket every time just to find out? With PhoneBattery, you can simply glance at your Apple Watch and boom — mystery solved. Perfect for: • Workouts where your phone is buried somewhere in a sweaty pocket • Busy commutes with too many bags and not enough hands • Couch-days where the phone is just a little too far away No magic. No fuss. Just your iPhone battery, right where it should be: on your wrist. FEATURES • Smart battery notifications (never get caught at 2 percent again) • Clean and simple interface (nothing extra, no clutter) • Lots of Apple Watch complications • Alternative app icons (because vibes matter) • Free, no ads, and made by one indie developer • Optional tips if you want to support future features Need help or want to say hi? help@marcelvoss.com
Screenshots
Verdict
Battery Watcher and PhoneBattery both sit at 4.5 stars, but that hides the real split: 71% of Battery Watcher's written reviews are positive against 58% of PhoneBattery's. On price, rating, ratings volume and update cadence 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 PhoneBattery sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Battery Watcher holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 339 and 381 respectively. Written reviews point the same way: 71% of Battery Watcher's written reviews are positive against 58% of PhoneBattery's.
Battery Watcher ships an update fortnightly, PhoneBattery every 8 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Battery Watcher | PhoneBattery |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (339 ratings) — better | 4.3 (381 ratings) |
| Positive reviews | 70.7% of reviews — better | 58.4% of reviews |
| Number of ratings | 339 | 381 — better |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Slackerz Inc | Marcel Voss |
Customer experience
Battery Watcher
PhoneBattery
User reviews
Battery Watcher
From 339 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
PhoneBattery
From 381 App Store ratingsWhat we love
- 👍 Simple and intuitive user interface
- ⚡ Quick access to iPhone battery status from Apple Watch
- 🎯 Does exactly what it advertises
- 💰 Free app with no in-app purchases
- 🎨 Pleasant and elegant design
Room to improve
- 🐛 App frequently stops working or becomes non-functional
- 🐛 Complication feature doesn't load data properly
- 🐛 Battery percentage displays incorrectly or shows blank screens
- ⚠️ Lacks compatibility with newer iOS and watchOS versions
- ⚠️ Poor customer support and slow response times
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
PhoneBattery
Reported bugs
10 issues- Complication shows skeleton loading screen but never loads data
- App displays blank battery icon with no charge information
- Battery percentage shows incorrect values
- App only works if opened on phone first
- Incompatible with watchOS 7 and iOS 14+
Show 5 moreShow fewer
- Circular display setting doesn't apply
- Low battery notifications never trigger
- App crashes or fails to display on Apple Watch
- Settings changes don't persist (e.g., round to long battery display)
- Inconsistent functionality across Watch Series 3, 5, 6 models
Requested features
8 requests- Add working complication for watch face integration
- Support for circular battery indicator display
- Sound notifications for low battery alerts
- Display phone signal strength information
- Show Bluetooth headphone battery percentage
Show 3 moreShow fewer
- Change Apple Watch app icon customization
- Battery health information display
- Regular app updates for current OS compatibility
In-app purchases
Battery Watcher
- Battery Watcher Premium$1.99
PhoneBattery
- Small tip$0.99
- Medium tip$1.99
- Large tip$3.99
Show 1 moreShow fewer
- Generous tip$4.99
Questions
Is Battery Watcher free?
Is PhoneBattery free?
Which has better reviews, Battery Watcher or PhoneBattery?
Do Battery Watcher or PhoneBattery have ads?
Which is updated more often, Battery Watcher or PhoneBattery?
Other comparisons
