# 三省 vs ReadSlow

The clearest difference is update cadence: ReadSlow at every 3 days against 三省's every 6 months. 三省's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 三省 sells 3 in-app purchases, starting at $2.99 per month and ReadSlow sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

三省 ships an update every 6 months, ReadSlow every 3 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 三省 | ReadSlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6470999911/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 6 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [嘉达 黄](https://appshunter.io/developer/1708566399) | [炜东 黄](https://appshunter.io/developer/1651122567) |

## What reviewers say

### 三省

[App page](https://appshunter.io/ios/app/id6470999911)

This cognitive tool uses cards for recording, reviewing, and self-dialogue to aid memory and clear thinking. It offers flexible input methods, knowledge networking, and visual mind mapping to enhance understanding and reflection.

**Highlights:** Card input (typing & handwriting), Bidirectional knowledge linking, Visual mind maps, Self-dialogue mechanism, Spaced repetition review, Cognitive graph building

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThreeTimes - Monthly Plan | $2.99 | per month |
| ThreeTimes - Yearly Plan | $4.99 | per year |
| ThreeTimes - Lifetime Plan | $9.99 | one-time |


### ReadSlow

[App page](https://appshunter.io/ios/app/readslow-bilingual-reading/id6793834356)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is 三省 free?

三省 is free to download, with in-app purchases available.

### Is ReadSlow free?

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

### Do 三省 or ReadSlow have ads?

Neither 三省 nor ReadSlow shows ads.

### Which is updated more often, 三省 or ReadSlow?

三省 ships an update every 6 months, and ReadSlow every 3 days. Most recently, 三省 was updated on October 16, 2026 and ReadSlow 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.*