# BondingOS vs doctorbook（ドクターブック）

The clearest difference is update cadence: doctorbook（ドクターブック） at every 2 weeks against BondingOS's every 2 months. BondingOS's advantage is iOS requirement (10.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

BondingOS ships an update every 2 months, doctorbook（ドクターブック） every 2 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | BondingOS | doctorbook（ドクターブック） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 63 MB | 40 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [株式会社デンタルアロー](https://appshunter.io/developer/1440037216) | [Doctorbook Inc.](https://appshunter.io/developer/1504193261) |

## What reviewers say

### BondingOS

[App page](https://appshunter.io/ios/app/bondingos/id1440037217)

**Features:** macOS Compatibility

**In-app purchases:** none


### doctorbook（ドクターブック）

[App page](https://appshunter.io/ios/app/doctorbook/id6749556014)

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

**In-app purchases:** none


## Frequently asked questions

### Is BondingOS free?

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

### Is doctorbook（ドクターブック） free?

doctorbook（ドクターブック） is free to download, with no in-app purchases.

### Do BondingOS or doctorbook（ドクターブック） have ads?

Neither BondingOS nor doctorbook（ドクターブック） shows ads.

### Which is updated more often, BondingOS or doctorbook（ドクターブック）?

BondingOS ships an update every 2 months, and doctorbook（ドクターブック） every 2 weeks. Most recently, BondingOS was updated on October 26, 2026 and doctorbook（ドクターブック） on October 30, 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.*