# Smooth Clock vs Keep Screen On

The clearest difference is update cadence: Keep Screen On at every 5 months against Smooth Clock's every 11 months. Keep Screen On also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Smooth Clock costs $0.99 and Keep Screen On $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Smooth Clock ships an update every 11 months, Keep Screen On every 5 months. The most recent releases landed on September 25, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Smooth Clock | Keep Screen On |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| 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 11 months | **Every 5 months** |
| Monetization | — | Paid |
| Size | 1 MB | 11 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Duy Nguyen](https://appshunter.io/developer/1444869106) |

## What reviewers say

### Smooth Clock

[App page](https://appshunter.io/ios/app/smooth-clock/id482921576)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Smooth Clock free?

Smooth Clock costs $0.99, with no in-app purchases.

### Is Keep Screen On free?

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

### Do Smooth Clock or Keep Screen On have ads?

Neither Smooth Clock nor Keep Screen On shows ads.

### Which is updated more often, Smooth Clock or Keep Screen On?

Smooth Clock ships an update every 11 months, and Keep Screen On every 5 months. Most recently, Smooth Clock was updated on September 25, 2026 and Keep Screen On on September 9, 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.*