# Memorizer vs Retn

The clearest difference is update cadence: Retn at weekly against Memorizer's every 3 months. Retn also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Memorizer sells 3 in-app purchases, starting at $2.99 per month and Retn sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Memorizer ships an update every 3 months, Retn weekly. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Memorizer | Retn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/memorizer-learning-assistant/id1378565265/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Freemium | — |
| Size | 17 MB | 25 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Azamat Valitov](https://appshunter.io/developer/805926721) | [Neointro](https://appshunter.io/developer/543832840) |

## What reviewers say

### Memorizer

[App page](https://appshunter.io/ios/app/memorizer-learning-assistant/id1378565265)

This app helps you learn faster by creating flashcards and reviewing them at optimal times. It uses memory science to build long-lasting knowledge with less effort, organizing study material into groups and offering import/export options.

**Highlights:** Spaced repetition review scheduling, Organize decks with groups, Import and export flashcard decks, Distraction-free study interface, Reliable daily study notifications, Learn on the go

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Memorizer 1 Month Pro | $2.99 | per month |
| Memorizer 3 Months Pro | $6.99 | per 3 months |
| Memorizer 1 Year Pro | $24.99 | per year |


### Retn

[App page](https://appshunter.io/ios/app/retn-imprint-one-focus/id6756639719)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Retn Premium | $1.99 | one-time |


## Frequently asked questions

### Is Memorizer free?

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

### Is Retn free?

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

### Do Memorizer or Retn have ads?

Neither Memorizer nor Retn shows ads.

### Which is updated more often, Memorizer or Retn?

Memorizer ships an update every 3 months, and Retn weekly. Most recently, Memorizer was updated on October 25, 2026 and Retn on October 22, 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.*