# O vs 請求書メーカー

The clearest difference is update cadence: O at every 3 weeks against 請求書メーカー's every 13 months. O also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

O ships an update every 3 weeks, 請求書メーカー every 13 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | O | 請求書メーカー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 13 months |
| Size | 16 MB | 14 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [O-TECH JAPAN](https://appshunter.io/developer/1219186631) | [RAINBOW TREE LLC](https://appshunter.io/developer/1619997282) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-techmobile/id1246072028)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 請求書メーカー

[App page](https://appshunter.io/ios/app/pdf/id6749453443)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is O free?

O is free to download, with no in-app purchases.

### Is 請求書メーカー free?

請求書メーカー is free to download, with no in-app purchases.

### Do O or 請求書メーカー have ads?

Neither O nor 請求書メーカー shows ads.

### Which is updated more often, O or 請求書メーカー?

O ships an update every 3 weeks, and 請求書メーカー every 13 months. Most recently, O was updated on October 4, 2026 and 請求書メーカー 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.*