# BatteryPhone vs MobAlerm

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.

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

BatteryPhone ships an update every 2 months, MobAlerm every 10 days. The most recent releases landed on October 16, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | BatteryPhone | MobAlerm |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[3.6 (156 ratings)](https://appshunter.io/ios/app/batteryphone/id1191334332/reviews)** | — |
| Number of ratings | **156** | — |
| Positive reviews | 53.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 1 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [Kengo Tate](https://appshunter.io/developer/1458012620) |

## What reviewers say

### BatteryPhone

[App page](https://appshunter.io/ios/app/batteryphone/id1191334332)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient way to check battery levels
- 💡 Helpful complication options
- 🔋 Minimal battery drain

**What reviewers complain about**

- 🐛 Inconsistent updates
- 🐛 Inaccurate battery readings
- 🔋 High battery consumption
- 🐛 Compatibility issues with newer devices/OS

**Reported bugs**

- Complication not updating
- App crashing on launch
- Incorrect battery percentage displayed

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/mobalerm/id6737408995)

**In-app purchases:** none


## Frequently asked 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 16, 2026 and MobAlerm on September 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*