# 寸光阴 vs 小自律

The clearest difference is in-app purchases: 寸光阴 at none against 小自律's 2. 寸光阴 also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 15 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 小自律 sells 2 in-app purchases, starting at $0.49 per 7 days. 寸光阴 asks for nothing beyond the download.

寸光阴 ships an update every 3 weeks, 小自律 every 15 months. The most recent releases landed on October 10, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 寸光阴 | 小自律 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1555007634/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 15 months |
| Monetization | — | Free with in-app purchases |
| Size | 207 MB | 69 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [巍 黎](https://appshunter.io/developer/1462851201) | [Hangzhou boniu technology co. LTD](https://appshunter.io/developer/1444969487) |

## What reviewers say

### 寸光阴

[App page](https://appshunter.io/ios/app/id1462851202)

**Features:** macOS Compatibility

**In-app purchases:** none


### 小自律

[App page](https://appshunter.io/ios/app/id1555007634)

This tool helps you build positive habits and stay focused by minimizing distractions. It offers customizable habit tracking, reminders, and progress analysis. Enjoy a clean interface, focus aids like white noise, and automatic cloud backups.

**Highlights:** Customizable habit creation, Habit statistics and progress tracking, Daily打卡 reminders with sound options, Focus timer with white noise, Daily focus data charts, Automatic cloud data backup, Reward cards for completing habits

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小自律周会员 | $0.49 | per 7 days |
| 小自律月会员 | $1.49 | per month |


## Frequently asked questions

### Is 寸光阴 free?

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

### Is 小自律 free?

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

### Do 寸光阴 or 小自律 have ads?

小自律 shows ads; 寸光阴 does not.

### Which is updated more often, 寸光阴 or 小自律?

寸光阴 ships an update every 3 weeks, and 小自律 every 15 months. Most recently, 寸光阴 was updated on October 10, 2026 and 小自律 on October 21, 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.*