# Kayf vs DLD

The clearest difference is in-app purchases: DLD at none against Kayf's 1. DLD also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. Kayf sells 1 one-off in-app purchase. DLD asks for nothing beyond the download.

## The numbers

| Metric | Kayf | DLD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 18 MB | 17 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tariq Al-aqrabawi](https://appshunter.io/developer/1877383192) | [Muhammad Rafhan](https://appshunter.io/developer/1862281894) |

## What reviewers say

### 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 |


### DLD

[App page](https://appshunter.io/ios/app/dld-logic-design-and-circuits/id6814475914)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kayf free?

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

### Is DLD free?

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

### Do Kayf or DLD have ads?

Neither Kayf nor DLD shows ads.

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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.*