# ScreenKiller vs Planet Gravity

The clearest difference is in-app purchases: Planet Gravity at none against ScreenKiller's 1. ScreenKiller's advantage is update cadence (every 3 months vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ScreenKiller sells 1 one-off in-app purchase. Planet Gravity asks for nothing beyond the download.

ScreenKiller ships an update every 3 months, Planet Gravity every 14 months. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ScreenKiller | Planet Gravity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/screenkiller/id950713458/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | Paid | **Free** |
| Size | 35 MB | 5 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vigleik Steinar Voll](https://appshunter.io/developer/898923144) | [Niagara Mobile LLC](https://appshunter.io/developer/1039399999) |

## What reviewers say

### ScreenKiller

[App page](https://appshunter.io/ios/app/screenkiller/id950713458)

This app uses your device's screen to create startling effects when touched or shaken. Customize the scares with your own images, sounds, and videos for personalized pranks.

**Highlights:** Screen shattering effect, Scary sound effects, Shake to trigger boar animation, Customizable images and sounds, Personalized video and picture integration, Setup options for customization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock ScreenKiller | $0.49 | one-time |


### Planet Gravity

[App page](https://appshunter.io/ios/app/planet-gravity/id995682820)

Explore the gravitational pull of different celestial bodies. Watch pendulums swing and collide under varying gravitational forces, offering a unique physics simulation experience.

**Highlights:** Select different planets for unique gravity, Observe pendulum collisions, Physics-based simulation, Educational planet facts, Interactive entertainment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ScreenKiller free?

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

### Is Planet Gravity free?

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

### Do ScreenKiller or Planet Gravity have ads?

Neither ScreenKiller nor Planet Gravity shows ads.

### Which is updated more often, ScreenKiller or Planet Gravity?

ScreenKiller ships an update every 3 months, and Planet Gravity every 14 months. Most recently, ScreenKiller was updated on November 1, 2026 and Planet Gravity 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.*