# ISBN vs Mish

The clearest difference is in-app purchases: ISBN at none against Mish's 5. Mish's advantage is ads (none vs shown) and update cadence (weekly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Mish sells 5 in-app purchases, starting at $1.99 per month. ISBN asks for nothing beyond the download.

ISBN ships an update every 4 months, Mish weekly. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ISBN | Mish |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Weekly** |
| Size | 16 MB | 333 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [剑秋 肖](https://appshunter.io/developer/806037264) | [Liang Ting Yu](https://appshunter.io/developer/1831213270) |

## What reviewers say

### ISBN

[App page](https://appshunter.io/ios/app/isbn/id6449743934)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mish

[App page](https://appshunter.io/ios/app/mish-book-tracker-and-notes/id6749848120)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mish Pro Monthly | $1.99 | per month |
| Mish Pro Yearly | $19.99 | per year |
| A Cup of Coffee | $0.99 | one-time |
| A Nice Lunch | $1.99 | one-time |
| A Good Book | $4.99 | one-time |


## Frequently asked questions

### Is ISBN free?

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

### Is Mish free?

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

### Do ISBN or Mish have ads?

ISBN shows ads; Mish does not.

### Which is updated more often, ISBN or Mish?

ISBN ships an update every 4 months, and Mish weekly. Most recently, ISBN was updated on October 19, 2026 and Mish on October 18, 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.*