# shelfio vs Reading Memory

The clearest difference is in-app purchases: shelfio at none against Reading Memory's 2. shelfio also leads on update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

shelfio ships an update fortnightly, Reading Memory every 3 months. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | shelfio | Reading Memory |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | — | Freemium |
| Size | 64 MB | 29 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Reo Shigeno](https://appshunter.io/developer/1788864693) | [Kyoichi Taniguchi](https://appshunter.io/developer/1609440791) |

## What reviewers say

### shelfio

[App page](https://appshunter.io/ios/app/shelfio/id1577889639)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is shelfio free?

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

### Is Reading Memory free?

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

### Do shelfio or Reading Memory have ads?

Neither shelfio nor Reading Memory shows ads.

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

shelfio ships an update fortnightly, and Reading Memory every 3 months. Most recently, shelfio was updated on October 6, 2026 and Reading Memory on October 24, 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.*