# Doolhof vs 99

The clearest difference is ads: Doolhof at none against 99's shown. Doolhof also leads on device support (5 vs 2) and iOS requirement (13.0 vs 16.6). 99's advantage is update cadence (weekly vs every 14 months). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Doolhof ships an update every 14 months, 99 weekly. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Doolhof | 99 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Weekly** |
| Size | 3 MB | 5 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jan Nutbroek](https://appshunter.io/developer/887410817) | [Nazir Dogan](https://appshunter.io/developer/1048892607) |

## What reviewers say

### Doolhof

[App page](https://appshunter.io/ios/app/doolhof/id1529664582)

**In-app purchases:** none


### 99

[App page](https://appshunter.io/ios/app/99-the-timing-challenge/id6756195728)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doolhof free?

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

### Is 99 free?

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

### Do Doolhof or 99 have ads?

99 shows ads; Doolhof does not.

### Which is updated more often, Doolhof or 99?

Doolhof ships an update every 14 months, and 99 weekly. Most recently, Doolhof was updated on October 25, 2026 and 99 on October 14, 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.*