Mister Battery vs RadMonJP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mister Battery
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.
- Measure maximum charging watts
- Track charging duration and effect
- Calculate charge speed
- Check PD support
- Compare charging device combinations
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Mister Battery helps you calculate each charging detail for your device. With different chargers and charging cables, your device's charging speed varies greatly. Using the Mister Battery, we can help you find the best charging device combination! Mister Battery provides the following features: 1. Measure the maximum watts of the current charging system, the number of milliamps per minute charged. 2. Record the duration and effect of each charge to help you compare the results. 3. Calculate the speed of each charge you got. 4. Check if your device supports PD(Power Delivery) . Find your best charging device and let your battery charge up!
RadMonJP
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RadMonJP is a radiation monitoring app that helps you check radiation levels across Japan in real time. Key features: - Browse monitoring posts nationwide in a clear dashboard - View radiation levels on an interactive map - Check rankings to quickly identify higher readings - See each monitoring post's current reading, weather, and 24-hour trend - Customize daily reports and emergency alerts Whether you are checking conditions near home or planning a trip, RadMonJP helps you find the information you need quickly for greater peace of mind for you and your family. This app is supported by advertising. Join the annual sponsorship program to remove ads and support future development. Privacy Policy: https://radmon.jp/privacy Terms of Use: https://radmon.jp/terms
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 24, 2026 and October 19, 2026 respectively.
| Parameter | Mister Battery | RadMonJP |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.5 (410 ratings) — better | — |
| Positive reviews | 67.8% of reviews | — |
| Number of ratings | 410 — better | — |
| Update frequency | Monthly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 25 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | He Zhou | RR Aware Studio |
Bugs and requests
Mister Battery
Reported bugs
7 issues- 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
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- Charging at negative wattage reported
- App asks for review immediately upon opening
Requested features
14 requests- 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
Show 9 moreShow fewer
- Add charging end notification sound
- Add Arabic language support
- Add V/A measurement
- Add widget for quick view
- Add ability to label chargers
- Add peak and average power to details page
- Add battery capacity data
- Improve accuracy of wireless charging measurement
- Add more functions and remove restrictions
RadMonJP
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mister Battery
No in-app purchases
RadMonJP
- プレミアム1ヶ月$0.991 Month
- Bronze$4.991 Year
- Silver sponsor$9.991 Year
Show 3 moreShow fewer
- Gold sponsor$19.991 Year
- Platinum sponsor$49.991 Year
- Diamond sponsor$99.991 Year
