# Mobile Bookshelf vs Reading Memory

The clearest difference is iOS requirement: Mobile Bookshelf at 15.5 against Reading Memory's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Mobile Bookshelf sells 2 in-app purchases, starting at $0.99 per month and Reading Memory sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Mobile Bookshelf | Reading Memory |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Freemium |
| Size | 37 MB | 48 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kouten motoki](https://appshunter.io/developer/1604200923) | [Kyoichi Taniguchi](https://appshunter.io/developer/1609440791) |

## What reviewers say

### Mobile Bookshelf

[App page](https://appshunter.io/ios/app/mobile-bookshelf-reading-log/id6744626194)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Plan | $0.99 | per month |
| Advance Plan | $1.99 | per month |


### Reading Memory

[App page](https://appshunter.io/ios/app/reading-memory-book-tracker/id6751159926)

This app helps you build a consistent reading habit and retain information from the books you read. It allows you to track reading days, manage your to-read pile, and take private notes on your books. Advanced features like AI-powered key point extraction are available through an optional subscription.

**Highlights:** Build daily reading habits, Track reading streaks and finished books, Organize to-read and finished book piles, Take private notes and sticky notes, Search and add books via barcode or title, Generate reading cards and badges, AI-powered key point extraction (subscription)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| メモリープラス月額プラン | $3.99 | per month |
| メモリープラス年額プラン | $39.99 | per year |


## Frequently asked questions

### Is Mobile Bookshelf free?

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

### Is Reading Memory free?

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

### Do Mobile Bookshelf or Reading Memory have ads?

Neither Mobile Bookshelf nor Reading Memory shows ads.

### Which is updated more often, Mobile Bookshelf or Reading Memory?

Mobile Bookshelf ships an update every 2 months, and Reading Memory every 2 months. Most recently, Mobile Bookshelf was updated on October 25, 2026 and Reading Memory on November 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.*