# 松树自律 vs Langry

The clearest difference is price: Langry at Free against 松树自律's $0.99. 松树自律's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

Langry is free to download; 松树自律 costs $0.99 up front. Langry sells 2 in-app purchases, starting at $1.99 per month. 松树自律 asks for nothing beyond the download.

松树自律 ships an update every 6 days, Langry every 3 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 松树自律 | Langry |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/langry-ai-language-writing/id6741383609/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 16 MB | 32 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen Kuaile Xiaotian Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1677484995) | [笛 姜](https://appshunter.io/developer/1561507357) |

## What reviewers say

### 松树自律

[App page](https://appshunter.io/ios/app/ai/id6446350660)

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

**In-app purchases:** none


### Langry

[App page](https://appshunter.io/ios/app/langry-ai-language-writing/id6741383609)

This AI-powered diary app helps you improve foreign language writing skills. It offers real-time word suggestions, grammar corrections, and a personalized mistake archive for focused learning.

**Highlights:** AI-powered writing assistance, Real-time word suggestions, Grammar error highlighting, Personalized mistake archive, Multilingual support (EN, ZH, JA, KO), Native language word replacement

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is 松树自律 free?

松树自律 costs $0.99, with no in-app purchases.

### Is Langry free?

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

### Do 松树自律 or Langry have ads?

Neither 松树自律 nor Langry shows ads.

### Which is updated more often, 松树自律 or Langry?

松树自律 ships an update every 6 days, and Langry every 3 days. Most recently, 松树自律 was updated on November 3, 2026 and Langry on November 5, 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.*