Battery Watcher vs SEC Smart 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!
SEC Smart Battery
Monitor your SEC MICROLYTE 12V ML Series lithium-ion battery with this utility tool. It provides real-time monitoring data and requires Bluetooth connectivity. Note that a device can only connect to one battery at a time.
- Lithium-ion battery monitoring
- Bluetooth connectivity
- Detection distance up to 5m
- Single device-to-battery connection
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This APP is specifically made for SEC MICROLYTE 12V ML Series battery. * An innovative utility tool for monitoring your lithium ion battery * Some device might not be able to connect with the batteries since they do not support bluetooth communication. * Detection distance: <= 5m * A device can only be connected with one battery each time. * If you want to connect this battery with another device, please exit the APP on your current device.
Screenshots
Verdict
The clearest difference is rating: SEC Smart Battery at 5.0 against Battery Watcher's 4.5. SEC Smart Battery also leads on in-app purchases (none vs 1) and iOS requirement (8.0 vs 18.6). Battery Watcher's advantage is ratings volume (338 vs 1) and update cadence (fortnightly vs every 2 months). On price, ads 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. SEC Smart Battery asks for nothing beyond the download.
SEC Smart Battery holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Battery Watcher has 338 ratings behind it against 1, so its average is the more settled of the two.
Battery Watcher ships an update fortnightly, SEC Smart Battery every 2 months. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.
| Parameter | Battery Watcher | SEC Smart Battery |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (338 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 70.7% of reviews | — |
| Number of ratings | 338 — better | 1 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 18.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Slackerz Inc | SEC Industrial Battery Group |
Customer experience
Battery Watcher
SEC Smart Battery
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
SEC Smart Battery
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Battery Watcher
- Battery Watcher Premium$1.99
SEC Smart Battery
No in-app purchases
Questions
Is Battery Watcher free?
Is SEC Smart Battery free?
Which has better reviews, Battery Watcher or SEC Smart Battery?
Do Battery Watcher or SEC Smart Battery have ads?
Which is updated more often, Battery Watcher or SEC Smart Battery?
Other comparisons
