Universe Splitter
Universe Splitter is made and published by Aerfish LLC. AppBrain is an independent app data site and isn't affiliated with Aerfish LLC. The app name, icon, screenshots and description belong to Aerfish LLC and are shown as published on the App Store.
AppBrain's verdict
EstablishedLoved by usersTop 10- Rating on App Store
- 4.67
- 1,528 ratings
- Last updated
- July 22, 2025
- Size
- 104.4 MB
Users love it: 4.7 stars from 1,528 ratings. Its best ranking is #9 in Top Paid, Entertainment in Poland.
User feedback
Ratings and reviews on the App StoreComments on Universe Splitter for iOS
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Store listing
By Aerfish LLC, from the App StoreDescription by Aerfish LLC Written by the developer, not by AppBrain. Click to read.
THIS IS THE ORIGINAL!
• An App Store "Top Paid App"
• An App Store "Staff Favorite"
• Endorsed by famous physicists
And recently featured in:
• "Something Deeply Hidden" best-selling book by Sean Carroll
• "The Joe Rogan Experience" podcast
• "This American Life" podcast
"According to quantum mechanics, every observation brings new universes into existence. But these universes have been completely useless to us -- until now! Universe splitter helps guarantee that there's at least one version of you who has made all the right choices."
-- Sean Carroll, physicist at Caltech and best-selling author
"The functioning of this app is in complete agreement with the many-worlds interpretation of quantum mechanics."
-- Garrett Lisi, PhD, Theoretical Physics
Scientists say that every quantum event plays out simultaneously in every possible way, with each possibility becoming real in a separate universe. But that was just an abstract concept... until now! Because now, you can harness this powerful and mysterious effect right from your iPhone.
When faced with a tough choice, Universe Splitter allows you to live out BOTH of your options... in separate realities.* No mere coin-flip app can make this claim!
Here's how it works:
Let's say you have to make a difficult decision — for example, whether to accept a job offer or to turn it down. Just type both actions into your Universe Splitter, and press the "Split Universe" button.
Universe Splitter will then, over the internet, activate a remote "Quantis" brand quantum device (made by id Quantique, and certified by the National Metrology Institute of Switzerland) which will send a single photon into a quantum "either/or" state. According to current scientific thinking, though, the photon will actually be in a "both, but in separate universes" state!
Within seconds, Universe Splitter will report to you which of those two universes you’re in, and by taking a different action in each, you will cause these previously identical universes to diverge.*
Of course, you won't be able to see or interact with that other universe. In fact, you may question whether anything at all happened. But according to the prevailing quantum theory, there will be two of you pondering whether anything just happened!
Right now you're probably wondering: Does this app genuinely contact a quantum device in Geneva? YES, it absolutely does, and we would be happy to provide proof of this upon request. Email eric@aerfish.com for more info.
As BDembko writes: "The real joke... is that it's NOT a joke. Which actually makes it funnier, if you ask me. (Kind of an Andy Kaufman kind of thing) The guy actually went the extra 10 miles... and it seems so absurd to us, that we figure it's a joke. But it's not... which then means it is. This is seriously quantum humor to the extreme."
And -- if an infinite supply of universes isn't enough for you -- this app also gives you stylish, retro, machine-age graphics (complete with industrial-strength sound effects) which will underscore the awe-inspiring significance of each twist and turn of your ever-branching multiverse.
If you're a believer in the "Many Worlds" interpretation of quantum behavior, this app is a must. And if you're not, just think of this as THE most random of all coin-flip apps -- in that it uses the most random event in the universe: a single quantum event!
*According to prevailing quantum theory. Universes cannot contact each other. Not responsible for user's actions. ©Copyright 2009 Eric Daniels - All Rights Reserved
Safety and technology
Found in the app by AppBrain- Price
- $1.99
- App size
- 104.4 MB
- Content rating
- Everyone
Technologies used by Universe Splitter
Releases
Updates seen on the App Store- Version
- 1.73
- Launched
- before 2010
No changelog data
Alternatives
Similar apps and more from Aerfish LLCAlternatives to Universe Splitter
More from Aerfish LLC
Rankings
App Store top charts- Highest rank
- #9
- Chart
- Top Paid
- Entertainment
- Country
- Poland
App Store Rankings for Universe Splitter
Top rankings
| Rank | Country | Category | List |
|---|---|---|---|
| 9 | Poland | Entertainment | Top Paid |
| 13 | Netherlands | Entertainment | Top Paid |
| 42 | United States | Entertainment | Top Paid |
| 36 | Canada | Entertainment | Top Paid |
| 19 | Sweden | Entertainment | Top Paid |
| 20 | India | Entertainment | Top Paid |
| 20 | Norway | Entertainment | Top Paid |
| 66 | Germany | Entertainment | Top Paid |
| 38 | Portugal | Entertainment | Top Paid |
| 40 | Slovakia | Entertainment | Top Paid |
Ranking history in Poland
About the app and developer
About Universe Splitter
Universe Splitter is an entertainment app developed by Aerfish LLC.
User Ratings
Universe Splitter is rated 4.67 out of 5 stars. The rating is based on 1.5 thousand ratings.
App Information
Universe Splitter costs $1.99. The app size is 104.37 MB. The latest version available is 1.73. The last update was on July 22, 2025.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since before 2010.
Developer information for Aerfish LLC
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