# Schema vs Epilepsy Registry

The clearest difference is in-app purchases: Epilepsy Registry at none against Schema's 2. Epilepsy Registry also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). Schema's advantage is update cadence (every 9 days vs every 10 months). On price and ads there is nothing between them.

Both are free to download. Schema sells 2 in-app purchases, starting at $14.99 per month. Epilepsy Registry asks for nothing beyond the download.

Schema ships an update every 9 days, Epilepsy Registry every 10 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Schema | Epilepsy Registry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/schema-knowledge-compounding/id6747011799/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 months |
| Monetization | Freemium | — |
| Size | 165 MB | 21 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Infinity Labs AG](https://appshunter.io/developer/1818442467) | [NEUROLOGY AWARENESS & RESEARCH FOUNDATION](https://appshunter.io/developer/1469357150) |

## What reviewers say

### Schema

[App page](https://appshunter.io/ios/app/schema-knowledge-compounding/id6747011799)

This AI-powered learning companion helps you capture, summarize, and retain important ideas. It uses smart review intervals to ensure knowledge sticks, fostering deeper understanding for lifelong learners. Turn consumed information into lasting comprehension.

**Highlights:** Capture and organize key ideas, AI summarization, Spaced repetition reviews, Smart practice for retention, Build compounding mental leverage

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Schema Pro Monthly | $14.99 | per month |
| Schema Pro Yearly | $149.99 | per year |


### Epilepsy Registry

[App page](https://appshunter.io/ios/app/epilepsy-registry/id6752245348)

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

**In-app purchases:** none


## Frequently asked questions

### Is Schema free?

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

### Is Epilepsy Registry free?

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

### Do Schema or Epilepsy Registry have ads?

Neither Schema nor Epilepsy Registry shows ads.

### Which is updated more often, Schema or Epilepsy Registry?

Schema ships an update every 9 days, and Epilepsy Registry every 10 months. Most recently, Schema was updated on October 30, 2026 and Epilepsy Registry on October 30, 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.*