Comparison

BatteryPhone vs MobAlerm

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

Head to head
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.

About

MobAlerm

Read full description

SIngle Timer. Three notificate until timer ended.

Screenshots

BatteryPhone4 screens

Verdict

The call

The clearest difference is price: BatteryPhone at Free against MobAlerm's $0.49. MobAlerm's advantage is ads (none vs shown) and update cadence (every 10 days vs every 2 months). On in-app purchases 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

BatteryPhone is free to download; MobAlerm costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BatteryPhone ships an update every 2 months, MobAlerm every 10 days. The most recent releases landed on October 7, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
BatteryPhone versus MobAlerm: the parameters behind the verdict, then further details
ParameterBatteryPhoneMobAlerm
PriceFree — better$0.49
Rating3.6 (156 ratings) — better—
Positive reviews53.7% of reviews—
Number of ratings156 — better—
Update frequencyEvery 2 monthsEvery 10 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPod, Apple WatchiPhone, iPod, Apple Watch
Requires iOS15.013.0 — better
Further details — not scored
Size7 MB1 MB
Age rating4+4+
DeveloperKeietsu YasuharaKengo Tate

Bugs and 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

MobAlerm

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

BatteryPhone

No in-app purchases

None

MobAlerm

No in-app purchases

Questions

Is BatteryPhone free?
BatteryPhone is free to download, with no in-app purchases.
Is MobAlerm free?
MobAlerm costs $0.49, with no in-app purchases.
Do BatteryPhone or MobAlerm have ads?
BatteryPhone shows ads; MobAlerm does not.
Which is updated more often, BatteryPhone or MobAlerm?
BatteryPhone ships an update every 2 months, and MobAlerm every 10 days. Most recently, BatteryPhone was updated on October 7, 2026 and MobAlerm on September 24, 2026.

Other comparisons