Comparison

Universe Splitter vs Leprecam

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Universe Splitter

This app uses quantum physics to help you make decisions. Input two choices, and it uses a remote quantum device to determine which reality you end up in, allowing you to live out both outcomes in separate universes.

Highlights
  • Quantum decision-making
  • Splits universes based on choices
  • Uses remote quantum device
  • Based on many-worlds interpretation
  • Original and acclaimed app
Features
Read full description

Use Quantum Physics to Split Your Universe -- It's the Ultimate Decision-Maker 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

About

Leprecam

Add leprechauns, hats, and shamrocks to your photos to celebrate St. Patrick's Day. Magically place elements behind objects and use editing tools to create festive images for sharing.

Highlights
  • Add 29 leprechauns
  • Decorate with hats, gold, and shamrocks
  • Magically place elements behind objects
  • Scale, move, and erase elements
  • Photo editing tools (effects, brightness, contrast)
  • Create memes
  • Share to social media
Features
Read full description

Celebrate St. Patrick's Day and show your Irish pride with a Leprechaun Photo Bomb! With Leprecam, you can add a Leprechaun to any photo! Simply take a photo or use an existing one, add one of our 29 Leprechauns. Magically place the Leprechaun behind people or other objects, erase parts as needed to fit seamlessly into your picture. You can also add hats, pots of gold, and shamrocks to further enhance your photo. Process the photo with cool effects or add text, then share your creation with the world! Features: * 29 different Leprechauns to choose from * 10 hats, pots of gold, and shamrocks to enhance your St Patrick's Day spirit * Magically place the Leprechaun behind people, animals, and objects with one tap * Scale, Move, and Erase the Leprechaun so he seamlessly fits any scene * Use our photo editing features including Effects, Enhance, Crop, Brightness, Contrast, Red Eye, Frames and more * Create a Meme * Share to socials!

Screenshots

Universe Splitter4 screens
Leprecam4 screens

Verdict

The call

The clearest difference is ratings volume: Universe Splitter at 1.5K against Leprecam's 6. Universe Splitter also leads on rating (4.7 vs 4.3) and chart position (#69 vs unranked). Leprecam's advantage is price ($0.99 vs $1.99). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Universe Splitter costs $1.99 and Leprecam $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Universe Splitter holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Universe Splitter has 1.5K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 76% of Universe Splitter's written reviews are positive against 78% of Leprecam's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Universe Splitter ships an update every 17 months, Leprecam every 20 months. The most recent releases landed on October 31, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 5 level
Universe Splitter versus Leprecam: the parameters behind the verdict, then further details
ParameterUniverse SplitterLeprecam
Price$1.99$0.99 — better
Rating4.7 (1.5K ratings) — better4.3 (6 ratings)
Positive reviews75.6% of reviews77.8% of reviews — better
Number of ratings1.5K — better6
Update frequencyEvery 17 months — betterEvery 20 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#69 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size104 MB20 MB
Age rating4+12+
DeveloperAerfish LLCAsinine Games Inc

Customer experience

Universe Splitter

All ratings1,527 ratings
Positive91.4%
Neutral2.9%
Negative5.8%
Written reviews205 reviews
Positive75.6%
Neutral6.3%
Negative18.0%

Leprecam

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

Bugs and requests

Universe Splitter

Reported bugs

3 issues
  • App crashes or freezes during use
  • Inconsistent behavior across devices or OS versions
  • Issues with loading or connecting to the quantum device

Requested features

4 requests
  • Add ability to track and review past decisions
  • Improve visual design and user interface
  • Provide more information on the science behind the app
  • Allow customization of options and decision-making process

Leprecam

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Universe Splitter

No in-app purchases

None

Leprecam

No in-app purchases

Questions

Is Universe Splitter free?
Universe Splitter costs $1.99, with no in-app purchases.
Is Leprecam free?
Leprecam costs $0.99, with no in-app purchases.
Which has better reviews, Universe Splitter or Leprecam?
Universe Splitter is rated higher. Universe Splitter averages 4.7 out of 5 from 1.5K ratings, while Leprecam averages 4.3 from 6 ratings.
Do Universe Splitter or Leprecam have ads?
Neither Universe Splitter nor Leprecam shows ads.
Which is updated more often, Universe Splitter or Leprecam?
Universe Splitter ships an update every 17 months, and Leprecam every 20 months. Most recently, Universe Splitter was updated on October 31, 2026 and Leprecam on October 23, 2026.

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