# LaoCht vs 同频sync

The clearest difference is update cadence: 同频sync at every 3 days against LaoCht's fortnightly. LaoCht's advantage is 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. LaoCht sells 6 one-off in-app purchases and 同频sync sells 6 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

LaoCht ships an update fortnightly, 同频sync every 3 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | LaoCht | 同频sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 171 MB | 30 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [乾凯 孙](https://appshunter.io/developer/1864177159) | [磊 董](https://appshunter.io/developer/6808440096) |

## What reviewers say

### LaoCht

[App page](https://appshunter.io/ios/app/laocht/id6758879447)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 60心动能量 | $0.99 | one-time |
| 盲趣会员月卡 | $2.99 | one-time |
| 200心动能量 | $2.99 | one-time |
| 300能量 | $3.99 | one-time |
| 盲趣会员季卡 | $6.99 | one-time |
| 盲趣会员年卡 | $24.99 | one-time |


### 同频sync

[App page](https://appshunter.io/ios/app/sync/id6808456087)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 同频pro月度会员 | $1.99 | per month |
| 同频 Pro年度会员 | $19.99 | per year |
| 同频 Pro 固定期限会员（1年） | $9.99 | one-time |
| 同频 Pro 固定期限会员（2年） | $22.99 | one-time |
| 同频 Pro 固定期限会员（3年） | $29.99 | one-time |
| 同频sync终身会员 | $39.99 | one-time |


## Frequently asked questions

### Is LaoCht free?

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

### Is 同频sync free?

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

### Do LaoCht or 同频sync have ads?

Neither LaoCht nor 同频sync shows ads.

### Which is updated more often, LaoCht or 同频sync?

LaoCht ships an update fortnightly, and 同频sync every 3 days. Most recently, LaoCht was updated on October 25, 2026 and 同频sync on October 29, 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.*