# 시오리 vs 북크루

The clearest difference is monetization model: 북크루 at free against 시오리's freemium. 북크루 also leads on iOS requirement (15.0 vs 17.3). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

시오리 ships an update every 3 days, 북크루 every 4 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 시오리 | 북크루 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | Freemium | **Free** |
| Size | 150 MB | 30 MB |
| Requires iOS | 17.3 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ohttne](https://appshunter.io/developer/6788399225) | [Seonwo You](https://appshunter.io/developer/6797201584) |

## What reviewers say

### 시오리

[App page](https://appshunter.io/ios/app/and/id6788732084)

Record your reading progress, favorite quotes, and notes for each book. Create a personal reading feed with features like a sentence scanner, character relationship maps, and a focus timer.  Sync your reading data across devices.

**Highlights:** Organize books by status (reading, finished, want to read), Record quotes, notes, photos, and sticky notes per book, Scan book sentences into text, Create sentence collages with photos, Map character relationships, Track reading habits with logs and timers, Save unfamiliar words to a vocabulary list

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

**In-app purchases:** none


### 북크루

[App page](https://appshunter.io/ios/app/id6797201582)

This app helps you finish books by reading with friends. Set reading goals, track progress together, and schedule meetups based on your reading pace. Your reading history is saved as a virtual bookshelf.

**Highlights:** Read with friends, Track reading progress, Set reading goals, Schedule meetups, Virtual bookshelf, Share quotes and notes

**In-app purchases:** none


## Frequently asked questions

### Is 시오리 free?

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

### Is 북크루 free?

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

### Do 시오리 or 북크루 have ads?

Neither 시오리 nor 북크루 shows ads.

### Which is updated more often, 시오리 or 북크루?

시오리 ships an update every 3 days, and 북크루 every 4 days. Most recently, 시오리 was updated on October 16, 2026 and 북크루 on October 7, 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.*