# AlphaSign Learn Sign Language vs Optimem

The clearest difference is review sentiment: Optimem at 80% against AlphaSign Learn Sign Language's 33%. Optimem also leads on rating (4.7 vs 4.1) and in-app purchases (none vs 1). AlphaSign Learn Sign Language's advantage is iOS requirement (12.4 vs 16.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. AlphaSign Learn Sign Language sells 1 one-off in-app purchase. Optimem asks for nothing beyond the download.

Optimem holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 24 and 30 respectively. Written reviews point the same way: 33% of AlphaSign Learn Sign Language's written reviews are positive against 80% of Optimem's.

AlphaSign Learn Sign Language ships an update every 5 months, Optimem monthly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | AlphaSign Learn Sign Language | Optimem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (24 ratings)](https://appshunter.io/ios/app/alphasign-learn-sign-language/id526686526/reviews) | **[4.7 (30 ratings)](https://appshunter.io/ios/app/optimem-smart-flashcards/id1574383108/reviews)** |
| Number of ratings | 24 | **30** |
| Positive reviews | 33.3% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 63 MB | 54 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fragranze Apps Limited](https://appshunter.io/developer/369238797) | [Organic Software LLC](https://appshunter.io/developer/1574383110) |

## What reviewers say

### AlphaSign Learn Sign Language

[App page](https://appshunter.io/ios/app/alphasign-learn-sign-language/id526686526)

Learn the alphabet in American Sign Language (ASL) and British Sign Language (BSL). This educational app makes mastering sign language fun and easy with a simple scrolling interface and swipe gestures.

**Highlights:** Learn ASL alphabet, Learn BSL alphabet, Easy scrolling interface, Swipe to next letter, Educational and fun

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alphasign - Remove Ads | $1.99 | one-time |


### Optimem

[App page](https://appshunter.io/ios/app/optimem-smart-flashcards/id1574383108)

Master any subject quickly with science-backed flashcards. Learn in short, engaging sessions using spaced repetition and multimedia support. Track your progress and customize your study experience with a simple, distraction-free interface.

**Highlights:** Bite-sized learning sessions, Spaced repetition system, Multimedia flashcard support, Progress tracking and stats, Customizable study settings, Dark mode, Content creation and sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is AlphaSign Learn Sign Language free?

AlphaSign Learn Sign Language is free to download, with in-app purchases available.

### Is Optimem free?

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

### Which has better reviews, AlphaSign Learn Sign Language or Optimem?

Optimem is rated higher. AlphaSign Learn Sign Language averages 4.1 out of 5 from 24 ratings, while Optimem averages 4.7 from 30 ratings.

### Do AlphaSign Learn Sign Language or Optimem have ads?

AlphaSign Learn Sign Language shows ads; Optimem does not.

### Which is updated more often, AlphaSign Learn Sign Language or Optimem?

AlphaSign Learn Sign Language ships an update every 5 months, and Optimem monthly. Most recently, AlphaSign Learn Sign Language was updated on September 10, 2026 and Optimem on September 17, 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.*