# Join vs CoTime时伴

The clearest difference is in-app purchases: Join at none against CoTime时伴's 6. CoTime时伴's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. CoTime时伴 sells 6 in-app purchases, starting at $1.99 per month. Join asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Join | CoTime时伴 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Size | 146 MB | 22 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Dimitrios Chatzichristofas](https://appshunter.io/developer/1683879408) | [Co-study Information Technology (Shanghai) Co., Ltd](https://appshunter.io/developer/1489845277) |

## What reviewers say

### Join

[App page](https://appshunter.io/ios/app/join-groups-people-and-events/id6448194048)

**Features:** macOS Compatibility

**In-app purchases:** none


### CoTime时伴

[App page](https://appshunter.io/ios/app/cotime/id6475029619)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续订阅包月 | $1.99 | per month |
| 连续订阅包季 | $3.99 | per 3 months |
| 连续订阅包年 | $7.99 | per year |
| 购买会员-3个月 | $5.99 | one-time |
| 购买会员-1年 | $14.99 | one-time |
| 购买会员-3年 | $17.99 | one-time |


## Frequently asked questions

### Is Join free?

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

### Is CoTime时伴 free?

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

### Do Join or CoTime时伴 have ads?

Join shows ads; CoTime时伴 does not.

### Which is updated more often, Join or CoTime时伴?

Join ships an update weekly, and CoTime时伴 weekly. Most recently, Join was updated on October 25, 2026 and CoTime时伴 on October 30, 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.*