# Deep vs Derin

The clearest difference is in-app purchases: Derin at none against Deep's 1. On price, update cadence, ads and device support there is nothing between them.

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

Deep ships an update every 4 days, Derin every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Deep | Derin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 7 MB | 16 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MIN GYu OH](https://appshunter.io/developer/6803589847) | [Kidvo](https://appshunter.io/developer/1639323475) |

## What reviewers say

### Deep

[App page](https://appshunter.io/ios/app/deep-sea-diver/id6807047700)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove ads | $1.99 | one-time |


### Derin

[App page](https://appshunter.io/ios/app/derin-deep-dive/id6818666353)

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

**In-app purchases:** none


## Frequently asked questions

### Is Deep free?

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

### Is Derin free?

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

### Do Deep or Derin have ads?

Both Deep and Derin show ads.

### Which is updated more often, Deep or Derin?

Deep ships an update every 4 days, and Derin every 3 days. Most recently, Deep was updated on October 25, 2026 and Derin on October 24, 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.*