# Retent vs Znaiko

The clearest difference is in-app purchases: Znaiko at none against Retent's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Retent sells 2 in-app purchases, starting at $6.99 per month. Znaiko asks for nothing beyond the download.

## The numbers

| Metric | Retent | Znaiko |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Kristiyan Grigorov](https://appshunter.io/developer/1885305370) | [Kalin Todorov](https://appshunter.io/developer/1896710543) |

## What reviewers say

### Retent

[App page](https://appshunter.io/ios/app/retent-learn-and-remember/id6760609613)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Retent Unlimited Monthly | $6.99 | per month |
| Retent Unlimited Yearly | $39.99 | per year |


### Znaiko

[App page](https://appshunter.io/ios/app/znaiko/id6770043942)

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

**In-app purchases:** none


## Frequently asked questions

### Is Retent free?

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

### Is Znaiko free?

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

### Do Retent or Znaiko have ads?

Neither Retent nor Znaiko shows ads.

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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.*