# Synapse vs Sottaku

The clearest difference is in-app purchases: Synapse at none against Sottaku's 8. Synapse also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 80%). Sottaku's advantage is ratings volume (12 vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sottaku sells 8 in-app purchases, starting at $14.99 per month. Synapse asks for nothing beyond the download.

Synapse holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Sottaku has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Synapse's written reviews are positive against 80% of Sottaku's.

Both ship on a similar rhythm, roughly every 3 days. Both last shipped on September 14, 2026.

## The numbers

| Metric | Synapse | Sottaku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synapse-language-learning/id6753658560/reviews)** | [4.7 (12 ratings)](https://appshunter.io/ios/app/sottaku-learn-languages/id6756599573/reviews) |
| Number of ratings | 2 | **12** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | **Free** | Freemium |
| Size | 182 MB | 150 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Synaptic Learning Company LLC](https://appshunter.io/developer/6787863395) | [Sottaku Inc](https://appshunter.io/developer/1861698840) |

## What reviewers say

### Synapse

[App page](https://appshunter.io/ios/app/synapse-language-learning/id6753658560)

This app focuses on language learning through sound and memory, using immersive stories and ear training exercises. It offers visual grammar guides, camera-based flashcards, and collaborative learning features. Learn 26 languages with a science-backed approach.

**Highlights:** Immersive story podcasts, Science-based ear training, Camera-powered flashcards, Visual grammar tables, Collaborative sentence practice, Alphabet courses from zero

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

**In-app purchases:** none


### Sottaku

[App page](https://appshunter.io/ios/app/sottaku-learn-languages/id6756599573)

Master Chinese, Japanese, and Korean vocabulary with this app. It offers fast lookups, audio pronunciation, spaced repetition, and interactive quizzes. A browser extension and community chat are also available for enhanced learning.

**Highlights:** Fast word and sentence lookups, Audio pronunciation and furigana, Spaced repetition flashcards, Quick quizzes and challenge modes, Community chat feature, Companion browser extension

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sottaku Pro | $14.99 | per month |
| Sottaku Pro: Gift Sub | $14.99 | per month |
| Sottaku: 750 Gold | $9.99 | one-time |
| Sottaku Pro: One Month Gift Sub | $14.99 | one-time |
| Sottaku: 1600 Gold | $19.99 | one-time |
| Sottaku: 3400 Gold | $39.99 | one-time |
| Sottaku: 9200 Gold | $99.99 | one-time |
| Sottaku: 20000 Gold | $199.99 | one-time |


## Frequently asked questions

### Is Synapse free?

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

### Is Sottaku free?

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

### Which has better reviews, Synapse or Sottaku?

Synapse is rated higher. Synapse averages 5.0 out of 5 from 2 ratings, while Sottaku averages 4.7 from 12 ratings.

### Do Synapse or Sottaku have ads?

Neither Synapse nor Sottaku shows ads.

### Which is updated more often, Synapse or Sottaku?

Synapse ships an update every 3 days, and Sottaku every 3 days. Most recently, Synapse was updated on September 14, 2026 and Sottaku on September 14, 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.*