# 成长星约定 vs GanJiang Timer

The clearest difference is update cadence: GanJiang Timer at every 4 days against 成长星约定's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 成长星约定 sells 2 one-off in-app purchases and GanJiang Timer sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

成长星约定 ships an update every 2 months, GanJiang Timer every 4 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 成长星约定 | GanJiang Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 55 MB | 43 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 9+ | 4+ |
| Developer | [均 李](https://appshunter.io/developer/1153873787) | [显金 王](https://appshunter.io/developer/1896593904) |

## What reviewers say

### 成长星约定

[App page](https://appshunter.io/ios/app/id6740259996)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $1.99 | one-time |
| 终身会员 | $4.99 | one-time |


### GanJiang Timer

[App page](https://appshunter.io/ios/app/ganjiang-timer/id6798547929)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Quarterly | $9.99 | per 3 months |
| Semi-Annual | $19.99 | per 6 months |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is 成长星约定 free?

成长星约定 is free to download, with in-app purchases available.

### Is GanJiang Timer free?

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

### Do 成长星约定 or GanJiang Timer have ads?

Neither 成长星约定 nor GanJiang Timer shows ads.

### Which is updated more often, 成长星约定 or GanJiang Timer?

成长星约定 ships an update every 2 months, and GanJiang Timer every 4 days. Most recently, 成长星约定 was updated on October 15, 2026 and GanJiang Timer on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*