Comparison

Watch Notes vs BatteryPhone

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Watch Notes

Quickly access important information like train schedules or notes directly from your Apple Watch. Avoid reaching for your iPhone by viewing text, images, and URLs on your wrist. Data syncs seamlessly from your iPhone.

Highlights
  • View notes and images on Apple Watch
  • Access train timetables
  • Display website URLs as QR codes
  • Sync data from iPhone
  • Action Extension integration
  • Copy and paste functionality
Features
Read full description

Access to urgent information, such as train timetables or notes on your Apple Watch. No need to look for your iPhone in your pocket or bag. You can just check it on your wrist. The app shows text and images clipped with your iPhone, as well as text, images, and URLs loaded from Extension on your Apple Watch. ◎ Usage - Train route search and timetable - Notes that you need to check urgently - Shopping list - ToDos - Flashcards - Notes that you shouldn't forget - Favorite photo - Website URLs that you'd like to recommend to someone ◎ Features - Data is stored on your iPhone. Apple Watch has a simple control focused on viewing. - Supported Extension so it's easy to load data. Of course you are able to copy and paste. - URLs are shown in a QR code on Apple Watch. Use the barcode scanning app on the iPhone to scan the code to open the website. ◎ Integrated with other apps! By using a new Action Extension for iOS 8, the app can show the loaded data on Apple Watch. •Images •Safari •iTunes... and so on ◎ Notes The app can save and show up to 3 entries on Apple Watch. However, you can get an unlimited number of entries through in-app purchases.

About

BatteryPhone

Monitor your phone and watch battery levels directly from your wrist. Receive timely notifications for low or full charge status, and view historical battery data with convenient graph displays. Supports automatic updates via complications for seamless monitoring.

Highlights
  • Check phone and watch battery status
  • Receive low and full charge notifications
  • View battery level graphs
  • Complication support for automatic updates
  • Tap complication to manually update status
Features
Read full description

You can check the battery status of your phone and watch with your watch. Compatible with complications (automatic update). You can check the charging amount and charging status of the phone in a timely manner from the clock face. We will notify you by a notification when the charge amount of the phone or watch becomes less than the specified% or becomes full charge. The graph also displays the change in charge level for your phone and watch. - Set up complications with the watch app on your watch or phone. - The battery status displayed in the complication is automatically updated approximately every 12 to 60 minutes.  The reason why the update interval has a range is that it depends on Watch OS.  If the automatic update has stopped (for example, there is no update for more than 1.5 hour), tap the complication to restart it.  In the iPhone app, the latest update time is displayed under the watch's charge status display. - Tap the complication to update to the latest status. - A circular complication can be assigned to the outer circle and the inner number to indicate the battery level of the phone and watch, respectively. -- I am a Japanese developer. The support site can be translated into various languages with the "Translate" option on the right side of the site.

Screenshots

Watch Notes4 screens
BatteryPhone4 screens

Verdict

The call

The clearest difference is rating: Watch Notes at 4.3 against BatteryPhone's 3.6. Watch Notes also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.0). BatteryPhone's advantage is in-app purchases (none vs 1) and ratings volume (156 vs 16). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Watch Notes sells 1 one-off in-app purchase. BatteryPhone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Watch Notes holds the better App Store score, 4.3 against 3.6. That said, the two scores are not equally well evidenced: BatteryPhone has 156 ratings behind it against 16, so its average is the more settled of the two. Written reviews complicate that: 47% of Watch Notes's written reviews are positive against 54% of BatteryPhone's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Watch Notes ships an update every 6 weeks, BatteryPhone every 2 months. Both last shipped on October 7, 2026.

Scorecard6 real differences · 4 level
Watch Notes versus BatteryPhone: the parameters behind the verdict, then further details
ParameterWatch NotesBatteryPhone
PriceFreeFree
Rating4.3 (16 ratings) — better3.6 (156 ratings)
Positive reviews47.4% of reviews53.7% of reviews — better
Number of ratings16156 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPod, Apple WatchiPhone, iPod, Apple Watch
Requires iOS9.0 — better15.0
Further details — not scored
Size4 MB7 MB
Age rating4+4+
DeveloperiWare Inc.Keietsu Yasuhara

Customer experience

Watch Notes

All ratings16 ratings
Positive75.0%
Neutral6.3%
Negative18.8%
Written reviews38 reviews
Positive47.4%
Neutral13.2%
Negative39.5%

BatteryPhone

All ratings156 ratings
Positive60.9%
Neutral14.1%
Negative25.0%
Written reviews134 reviews
Positive53.7%
Neutral14.2%
Negative32.1%

Bugs and requests

Watch Notes

Not enough reviews yet to summarise bugs or requests.

BatteryPhone

Reported bugs

3 issues
  • Complication not updating
  • App crashing on launch
  • Incorrect battery percentage displayed

Requested features

4 requests
  • Customizable update frequency
  • Support for AirPods/Bluetooth device battery monitoring
  • Notification when device is fully charged
  • Ability to select which device's battery is displayed on complication

In-app purchases

1 purchases

Watch Notes

One-time1
  • Unlock entry limit$0.99
None

BatteryPhone

No in-app purchases

Questions

Is Watch Notes free?
Watch Notes is free to download, with in-app purchases available.
Is BatteryPhone free?
BatteryPhone is free to download, with no in-app purchases.
Which has better reviews, Watch Notes or BatteryPhone?
Watch Notes is rated higher. Watch Notes averages 4.3 out of 5 from 16 ratings, while BatteryPhone averages 3.6 from 156 ratings.
Do Watch Notes or BatteryPhone have ads?
BatteryPhone shows ads; Watch Notes does not.
Which is updated more often, Watch Notes or BatteryPhone?
Watch Notes ships an update every 6 weeks, and BatteryPhone every 2 months. Most recently, Watch Notes was updated on October 7, 2026 and BatteryPhone on October 7, 2026.

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