# Reading Memory vs Bookstacks

The clearest difference is in-app purchases: Bookstacks at none against Reading Memory's 2. Bookstacks also leads on update cadence (daily vs every 2 months) and iOS requirement (16.0 vs 26.0). Reading Memory's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Reading Memory sells 2 in-app purchases, starting at $3.99 per month. Bookstacks asks for nothing beyond the download.

Reading Memory ships an update every 2 months, Bookstacks daily. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Reading Memory | Bookstacks |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Freemium | — |
| Size | 48 MB | 25 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kyoichi Taniguchi](https://appshunter.io/developer/1609440791) | [Kenta Takeuchi](https://appshunter.io/developer/1879746418) |

## What reviewers say

### 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 |


### Bookstacks

[App page](https://appshunter.io/ios/app/bookstacks/id6760252143)

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

**In-app purchases:** none


## Frequently asked questions

### Is Reading Memory free?

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

### Is Bookstacks free?

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

### Do Reading Memory or Bookstacks have ads?

Bookstacks shows ads; Reading Memory does not.

### Which is updated more often, Reading Memory or Bookstacks?

Reading Memory ships an update every 2 months, and Bookstacks daily. Most recently, Reading Memory was updated on November 5, 2026 and Bookstacks on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*