# 三省 vs 茫径

The clearest difference is update cadence: 茫径 at every 11 days against 三省's every 6 months. 茫径 also leads on iOS requirement (15.0 vs 17.0). 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 茫径 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

三省 ships an update every 6 months, 茫径 every 11 days. The most recent releases landed on August 11, 2026 and December 3, 2025 respectively.

## The numbers

| Metric | 三省 | 茫径 |
| --- | --- | --- |
| 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 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 49 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [嘉达 黄](https://appshunter.io/developer/1708566399) | [北京智慧涟漪科技有限公司](https://appshunter.io/developer/1776602116) |

## 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 |


### 茫径

[App page](https://appshunter.io/ios/app/id6739931927)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 购买月卡 | $3.99 | one-time |
| 茫径年度会员 | $12.99 | one-time |
| 茫径季度会员 | $14.99 | one-time |
| 茫径两年会员 | $39.99 | one-time |


## Frequently asked questions

### Is 三省 free?

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

### Is 茫径 free?

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

### Do 三省 or 茫径 have ads?

Neither 三省 nor 茫径 shows ads.

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

三省 ships an update every 6 months, and 茫径 every 11 days. Most recently, 三省 was updated on August 11, 2026 and 茫径 on December 3, 2025.

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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.*