# Mister Battery vs RadMonJP

The clearest difference is price: RadMonJP at Free against Mister Battery's $2.99. RadMonJP also leads on update cadence (every 8 days vs monthly). Mister Battery's advantage is in-app purchases (none vs 6) and device support (4 vs 2). On ads there is nothing between them.

RadMonJP is free to download; Mister Battery costs $2.99 up front. RadMonJP sells 6 in-app purchases, starting at $0.99 per month. Mister Battery asks for nothing beyond the download.

Mister Battery ships an update monthly, RadMonJP every 8 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Mister Battery | RadMonJP |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.5 (410 ratings)](https://appshunter.io/ios/app/mister-battery/id1456081350/reviews)** | — |
| Number of ratings | **410** | — |
| Positive reviews | 67.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free | — |
| Size | 25 MB | 10 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [He Zhou](https://appshunter.io/developer/1022719718) | [RR Aware Studio](https://appshunter.io/developer/1439301679) |

## What reviewers say

### 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


### RadMonJP

[App page](https://appshunter.io/ios/app/radmonjp/id6737837347)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム1ヶ月 | $0.99 | per month |
| Bronze | $4.99 | per year |
| Silver sponsor | $9.99 | per year |
| Gold sponsor | $19.99 | per year |
| Platinum sponsor | $49.99 | per year |
| Diamond sponsor | $99.99 | per year |


## Frequently asked questions

### Is Mister Battery free?

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

### Is RadMonJP free?

RadMonJP is free to download, with in-app purchases available.

### Do Mister Battery or RadMonJP have ads?

Neither Mister Battery nor RadMonJP shows ads.

### Which is updated more often, Mister Battery or RadMonJP?

Mister Battery ships an update monthly, and RadMonJP every 8 days. Most recently, Mister Battery was updated on October 25, 2026 and RadMonJP on October 19, 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.*