# isoping. vs Serein

The clearest difference is in-app purchases: isoping. at none against Serein's 3. On price and iOS requirement there is nothing between them.

Both are free to download. Serein sells 3 in-app purchases, starting at $3.99 per month. isoping. asks for nothing beyond the download.

## The numbers

| Metric | isoping. | Serein |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Fortnightly |
| Size | 84 MB | 105 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Raj Banerjee](https://appshunter.io/developer/1655466191) | [Manisha Thakur](https://appshunter.io/developer/1881523884) |

## What reviewers say

### isoping.

[App page](https://appshunter.io/ios/app/isoping/id6458049066)

**In-app purchases:** none


### Serein

[App page](https://appshunter.io/ios/app/serein-screen-time-control/id6789297659)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Serein Premium Monthly | $3.99 | per month |
| Serein Premium Yearly | $24.99 | per year |
| Serein Premium Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is isoping. free?

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

### Is Serein free?

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

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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.*