# BTワットチェッカー vs MochiLog

The clearest difference is in-app purchases: BTワットチェッカー at none against MochiLog's 3. MochiLog's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MochiLog sells 3 one-off in-app purchases. BTワットチェッカー asks for nothing beyond the download.

BTワットチェッカー ships an update every 3 months, MochiLog fortnightly. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | BTワットチェッカー | MochiLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mochilog/id6756904240/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 15 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [RATOC Systems, Inc.](https://appshunter.io/developer/568725272) | [ryuya watanabe](https://appshunter.io/developer/1863586499) |

## What reviewers say

### BTワットチェッカー

[App page](https://appshunter.io/ios/app/bt/id1490362165)

**Features:** macOS Compatibility

**In-app purchases:** none


### MochiLog

[App page](https://appshunter.io/ios/app/mochilog/id6756904240)

This app provides accurate battery health information by analyzing your device's system logs. It offers detailed metrics like real capacity, cycle count, and wear level without needing a computer. All processing is done on-device for enhanced privacy.

**Highlights:** Real battery capacity (mAh), True cycle count, Precise wear level, History graph from multiple logs, 100% on-device processing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |
| Buy me a lunch | $1.99 | one-time |
| Buy me a dinner | $4.99 | one-time |


## Frequently asked questions

### Is BTワットチェッカー free?

BTワットチェッカー is free to download, with no in-app purchases.

### Is MochiLog free?

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

### Do BTワットチェッカー or MochiLog have ads?

Neither BTワットチェッカー nor MochiLog shows ads.

### Which is updated more often, BTワットチェッカー or MochiLog?

BTワットチェッカー ships an update every 3 months, and MochiLog fortnightly. Most recently, BTワットチェッカー was updated on October 13, 2026 and MochiLog on October 5, 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.*