# Reading Memory vs BookDiary

The clearest difference is update cadence: BookDiary at every 2 weeks against Reading Memory's every 3 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Reading Memory sells 2 in-app purchases, starting at $3.99 per month and BookDiary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Reading Memory ships an update every 3 months, BookDiary every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Reading Memory | BookDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/bookdiary-reading-journal/id6765982985/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 29 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kyoichi Taniguchi](https://appshunter.io/developer/1609440791) | [torankirite](https://appshunter.io/developer/1883564850) |

## What reviewers say

### Reading Memory

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

This app helps you record and deepen your reading experience through chat-based notes and AI interactions. It allows you to track reading goals, analyze habits, and revisit your thoughts on books.

**Highlights:** AI-powered chat memos, Mood tagging for emotional depth, Card-swipe review format, Smart book search and barcode scanning, Reading goal setting and habit tracking, AI summaries of chat memos, Reading statistics and analysis, Achievements and reading milestones

**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 |


### BookDiary

[App page](https://appshunter.io/ios/app/bookdiary-reading-journal/id6765982985)

A private reading journal to track your books, quotes, and reading habits without requiring an account or social sharing. Log your progress, save memorable passages, and discover new reads all on your device.

**Highlights:** Private reading journal, Save quotes from pages, Reading progress tracking, Digital book shelf, Reading calendar, Personal reading awards, Draw from TBR pile

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | one-time |


## Frequently asked questions

### Is Reading Memory free?

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

### Is BookDiary free?

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

### Do Reading Memory or BookDiary have ads?

Neither Reading Memory nor BookDiary shows ads.

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

Reading Memory ships an update every 3 months, and BookDiary every 2 weeks. Most recently, Reading Memory was updated on October 24, 2026 and BookDiary on October 25, 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.*