# Spaced Repetition vs Synapse

The clearest difference is rating: Synapse at 5.0 against Spaced Repetition's 4.3. Synapse also leads on update cadence (every 2 weeks vs monthly). Spaced Repetition's advantage is review sentiment (88% vs 73%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Spaced Repetition sells 3 in-app purchases, starting at $1.99 per month and Synapse sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Synapse holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews complicate that: 88% of Spaced Repetition's written reviews are positive against 73% of Synapse's, so the app with the better star average is not the one people write more warmly about.

Spaced Repetition ships an update monthly, Synapse every 2 weeks. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Spaced Repetition | Synapse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/spaced-repetition-synapse/id6672094098/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/synapse-education/id6751501662/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | **87.5% of reviews** | 72.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 67 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAMUEL PREMJI](https://appshunter.io/developer/1767673207) | [The Cooking Company](https://appshunter.io/developer/1835413725) |

## What reviewers say

### Spaced Repetition

[App page](https://appshunter.io/ios/app/spaced-repetition-synapse/id6672094098)

This app simplifies revision planning with a personalized schedule and timely reminders. It offers a calendar view and customizable intervals, eliminating the need for manual flashcard creation. Focus on learning without the stress of organizing your study plan.

**Highlights:** Personalized revision plan creation, Timely revision reminders, Intuitive calendar visualization, Customizable revision intervals, No flashcard creation required

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual | $9.99 | per year |
| Synapse premium | $29.99 | one-time |


### Synapse

[App page](https://appshunter.io/ios/app/synapse-education/id6751501662)

Transform your study materials into interactive learning tools. This app generates structured lessons, personalized quizzes, and mind maps from notes, documents, or audio recordings. It offers AI-powered tutoring and spaced repetition for effective memorization and collaborative study features.

**Highlights:** Scan and import notes, documents, and audio, AI-generated structured lessons and summaries, Personalized quizzes and practice exercises, Intelligent spaced repetition for memory retention, Collaborative study communities, AI tutor for concept explanation and correction

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Monthly | $19.99 | per month |
| Yearly | $99.99 | per year |


## Frequently asked questions

### Is Spaced Repetition free?

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

### Is Synapse free?

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

### Which has better reviews, Spaced Repetition or Synapse?

Synapse is rated higher. Spaced Repetition averages 4.3 out of 5 from 6 ratings, while Synapse averages 5.0 from 5 ratings.

### Do Spaced Repetition or Synapse have ads?

Neither Spaced Repetition nor Synapse shows ads.

### Which is updated more often, Spaced Repetition or Synapse?

Spaced Repetition ships an update monthly, and Synapse every 2 weeks. Most recently, Spaced Repetition was updated on October 30, 2026 and Synapse on November 8, 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.*