# OSOI vs Memobase

The clearest difference is device support: OSOI at 4 against Memobase's 1. OSOI also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | OSOI | Memobase |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 100 MB | 57 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dejan Jaksic](https://appshunter.io/developer/1660384911) | [Dmytro Mazniev](https://appshunter.io/developer/1693603224) |

## What reviewers say

### OSOI

[App page](https://appshunter.io/ios/app/osoi/id6501978133)

**Features:** Vision Pro support

**In-app purchases:** none


### Memobase

[App page](https://appshunter.io/ios/app/memobase/id6502102605)

**In-app purchases:** none


## Frequently asked questions

### Is OSOI free?

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

### Is Memobase free?

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

### Do OSOI or Memobase have ads?

Neither OSOI nor Memobase 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.*