# Urknall: Planet Merge — Physics puzzle, no ads

> Physics puzzle, no ads (iPhone/iPad app by Kevin Maurice Engelhardt.)

- Source: https://appshunter.io/ios/app/urknall-planet-merge/id6822413985 (this page in markdown: same URL + `.md`)
- Developer: [Kevin Maurice Engelhardt](https://appshunter.io/developer/6802925297)
- Category: Games, Casual, Puzzle
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: German (Germany), American English
- Released: 2026-10-20
- Data updated: 2026-10-22

## What is Urknall?

Two equal planets. One pop. One bigger planet.

Urknall (German for "Big Bang") is a relaxing physics puzzle for any spare minute. Drop planets into the jar, aim carefully and merge two equal ones into the next bigger one. Stardust becomes a comet, a comet becomes a moon, and one day, if you plan well, the Sun. And when two suns collide? Supernova!

EASY TO PLAY, HARD TO MASTER
• Drag to aim, let go to drop
• 11 planets from stardust to the Sun
• Real physics: planets roll, stack and push each other around
• If the jar overflows, the round is over

MADE FOR "JUST ONE MORE ROUND"
• Combos up to ×5 for quick merges
• A supernova flash when two suns collide
• Personal best and a Game Center leaderboard
• Challenge friends with your score

BUY ONCE, DONE
• No ads, ever
• No in-app purchases, no subscription
• No account, no data collection
• Works offline, even on a plane

With cute planet faces, juicy sounds and haptics. Plays perfectly with one thumb.

## Is Urknall safe?

Not enough ratings yet to assess Urknall.

## Is Urknall legit?

Urknall: Planet Merge appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Urknall is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-20

No release notes.

## More apps by Kevin Maurice Engelhardt

- [KFZ Trainer AutoTechnik lernen](https://appshunter.io/ios/app/kfz-trainer-autotechnik-lernen/id6802925295)
- [Mein Fahrtenbuch: Km & Steuer](https://appshunter.io/ios/app/mein-fahrtenbuch-km-and-steuer/id6817128709)
- [Geldeule Privat & Geschäftlich](https://appshunter.io/ios/app/geldeule-privat-and-geschaftlich/id6817535319)

All apps by Kevin Maurice Engelhardt: https://appshunter.io/developer/6802925297

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-22.*