# 片手キーボードPRO vs Mister Battery

The clearest difference is update cadence: Mister Battery at monthly against 片手キーボードPRO's every 3 months. Mister Battery also leads on price ($2.99 vs $3.99) and iOS requirement (11.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

片手キーボードPRO costs $3.99 and Mister Battery $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

片手キーボードPRO ships an update every 3 months, Mister Battery monthly. The most recent releases landed on September 22, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | 片手キーボードPRO | Mister Battery |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | — | **[4.5 (411 ratings)](https://appshunter.io/ios/app/mister-battery/id1456081350/reviews)** |
| Number of ratings | — | **411** |
| Positive reviews | — | 68.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | — | Free |
| Size | 112 MB | 25 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [TAWASHI KAMEMUSHI](https://appshunter.io/developer/435733426) | [He Zhou](https://appshunter.io/developer/1022719718) |

## What reviewers say

### 片手キーボードPRO

[App page](https://appshunter.io/ios/app/pro/id1021368752)

**Features:** Vision Pro support

**In-app purchases:** none


### Mister Battery

[App page](https://appshunter.io/ios/app/mister-battery/id1456081350)

Optimize your device's charging by identifying the fastest and most efficient charger and cable combinations. Track charging sessions to compare performance and ensure your device supports fast charging technologies like PD.

**Highlights:** Measure maximum charging watts, Track charging duration and effect, Calculate charge speed, Check PD support, Compare charging device combinations

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

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for testing chargers
- 👍 Provides useful information
- 👍 No ads or clutter
- 👍 Good for checking wattage
- 👍 Simple and easy to use

**What reviewers complain about**

- 👎 Does not work for some users
- 👎 Inaccurate wattage readings
- 👎 Not compatible with all devices/chargers
- 👎 Lacks instructions/guidance
- 👎 Paid app with no results

**Reported bugs**

- App does not record test or give info
- Icons in top menu bar are cropped and unclickable
- App crashes when trying to name chargers
- Test never ends for some users
- Dark mode not working, text unreadable

**Requested features**

- Add charging process curve/numerical display
- Add total charging duration
- Add charging power change graph or detailed classification
- Add charging rate 2D curve on main interface
- Add charging time and voltage curve


## Frequently asked questions

### Is 片手キーボードPRO free?

片手キーボードPRO costs $3.99, with no in-app purchases.

### Is Mister Battery free?

Mister Battery costs $2.99, with no in-app purchases.

### Do 片手キーボードPRO or Mister Battery have ads?

Neither 片手キーボードPRO nor Mister Battery shows ads.

### Which is updated more often, 片手キーボードPRO or Mister Battery?

片手キーボードPRO ships an update every 3 months, and Mister Battery monthly. Most recently, 片手キーボードPRO was updated on September 22, 2026 and Mister Battery on September 25, 2026.

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