# OpenStop vs ZZZ Wake Up!

The clearest difference is ads: OpenStop at none against ZZZ Wake Up!'s shown. ZZZ Wake Up!'s advantage is update cadence (every 2 months vs every 8 months) and iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

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

OpenStop ships an update every 8 months, ZZZ Wake Up! every 2 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OpenStop | ZZZ Wake Up! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 months** |
| Size | 42 MB | 56 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Technische Universitaet Chemnitz](https://appshunter.io/developer/1652901585) | [SMOLT STAGE, K.K.](https://appshunter.io/developer/1708601451) |

## What reviewers say

### OpenStop

[App page](https://appshunter.io/ios/app/openstop/id6740262037)

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

**In-app purchases:** none


### ZZZ Wake Up!

[App page](https://appshunter.io/ios/app/zzz-wake-up/id6768897512)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenStop free?

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

### Is ZZZ Wake Up! free?

ZZZ Wake Up! is free to download, with no in-app purchases.

### Do OpenStop or ZZZ Wake Up! have ads?

ZZZ Wake Up! shows ads; OpenStop does not.

### Which is updated more often, OpenStop or ZZZ Wake Up!?

OpenStop ships an update every 8 months, and ZZZ Wake Up! every 2 months. Most recently, OpenStop was updated on November 8, 2026 and ZZZ Wake Up! on October 31, 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.*