# Schematic vs Kayf

The clearest difference is iOS requirement: Kayf at 18.0 against Schematic's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Schematic sells 2 in-app purchases, starting at $69.99 per year and Kayf sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 5 days. Both last shipped on October 9, 2026.

## The numbers

| Metric | Schematic | Kayf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/schematic-how-things-work/id6801988976/reviews)** | — |
| Number of ratings | **26** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Freemium | — |
| Size | 205 MB | 18 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pavlo Dobronos](https://appshunter.io/developer/1879939696) | [Tariq Al-aqrabawi](https://appshunter.io/developer/1877383192) |

## What reviewers say

### Schematic

[App page](https://appshunter.io/ios/app/schematic-how-things-work/id6801988976)

Learn about the everyday systems you interact with, from electricity and plumbing to home appliances and engineering principles. Short, engaging lessons with visual diagrams and quick quizzes help you understand how things work.

**Highlights:** Short, 2-minute lessons, Self-drawing diagrams, On-screen captions, Three-question quizzes, Covers electricity, plumbing, appliances, and engineering, No account required, Progress saved locally

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly | $69.99 | per year |
| Yearly | $69.99 | per year |


### Kayf

[App page](https://appshunter.io/ios/app/kayf-how-things-work/id6813402468)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kayf Pro | $4.99 | one-time |


## Frequently asked questions

### Is Schematic free?

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

### Is Kayf free?

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

### Do Schematic or Kayf have ads?

Neither Schematic nor Kayf shows ads.

### Which is updated more often, Schematic or Kayf?

Schematic ships an update every 5 days, and Kayf every 5 days. Most recently, Schematic was updated on October 9, 2026 and Kayf on October 9, 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.*