# 定規(Ruler)for iPad vs MochiLog

The clearest difference is in-app purchases: 定規(Ruler)for iPad at none against MochiLog's 3. 定規(Ruler)for iPad also leads on iOS requirement (14.1 vs 16.0). MochiLog's advantage is ads (none vs shown) and review sentiment (90% vs 60%). On price there is nothing between them.

Both are free to download. MochiLog sells 3 one-off in-app purchases. 定規(Ruler)for iPad asks for nothing beyond the download.

定規(Ruler)for iPad ships an update every 5 months, MochiLog every 3 weeks. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 定規(Ruler)for iPad | MochiLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mochilog/id6756904240/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 60.0% of reviews | **90.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 1 MB | 20 MB |
| Requires iOS | **14.1** | 16.0 |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Mayumi Kato](https://appshunter.io/developer/705832872) | [ryuya watanabe](https://appshunter.io/developer/1863586499) |

## What reviewers say

### 定規(Ruler)for iPad

[App page](https://appshunter.io/ios/app/rulerfor-ipad/id1148435850)

This free utility app functions as a precise digital ruler for iPads. It supports both millimeter and inch measurements, making it easy to measure any object directly on your device. Designed for simplicity and a cool user experience.

**Highlights:** Digital ruler functionality, Millimeter measurement, Inch measurement, Supports all iPad sizes, Simple and cool interface

**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, iPhone Duo 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 定規(Ruler)for iPad free?

定規(Ruler)for iPad is free to download, with no in-app purchases.

### Is MochiLog free?

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

### Do 定規(Ruler)for iPad or MochiLog have ads?

定規(Ruler)for iPad shows ads; MochiLog does not.

### Which is updated more often, 定規(Ruler)for iPad or MochiLog?

定規(Ruler)for iPad ships an update every 5 months, and MochiLog every 3 weeks. Most recently, 定規(Ruler)for iPad was updated on October 23, 2026 and MochiLog on October 28, 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.*