# Keep Screen On vs Hydra

The clearest difference is price: Hydra at Free against Keep Screen On's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Hydra is free to download; Keep Screen On costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Keep Screen On | Hydra |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[2.0 (12 ratings)](https://appshunter.io/ios/app/keep-screen-on/id1453969337/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Paid | — |
| Size | 11 MB | 32 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duy Nguyen](https://appshunter.io/developer/1444869106) | [Instalane Internet Private Limited](https://appshunter.io/developer/1739626561) |

## What reviewers say

### Keep Screen On

[App page](https://appshunter.io/ios/app/keep-screen-on/id1453969337)

This utility prevents your device from entering sleep mode while running specific tasks, such as waiting for code builds to finish. It offers customizable timeout settings and an alarm notification upon completion.

**Highlights:** Prevents device sleep mode, Useful for code builds, Customizable timeout, Alarm notification, Runs in background

**In-app purchases:** none


### Hydra

[App page](https://appshunter.io/ios/app/hydra-water-drinking-tracker/id6738758531)

**In-app purchases:** none


## Frequently asked questions

### Is Keep Screen On free?

Keep Screen On costs $0.99, with no in-app purchases.

### Is Hydra free?

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

### Do Keep Screen On or Hydra have ads?

Neither Keep Screen On nor Hydra 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.*