Comparison

Quantum Quack vs MP4 Converter & Compressor

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

Head to head
About

Quantum Quack

Features
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- What is this App? Quantum Quack makes a decision from a list of options you provide, using quantum random numbers, which are fundamentally different than ordinary random numbers. Making a decision based on quantum randomness has fascinating implications that vary depending on the various interpretations of quantum mechanics. The two main ones are detailed here, within the hypothetical and highly relevant example of choosing between an Italian and a Chinese restaurant. - In the Copenhagen Interpretation: This is historically the first dominant interpretation, and is therefore still presented as the standard one in most textbooks. In this interpretation, a quantum measurement "collapses" the quantum state onto one of its possible outcomes. The collapse is fundamentally random, as opposed to ordinary random processes. Indeed, the result of a dice roll for example, appears random to us only because it is a complex process to predict. However, it is in principle perfectly predictable, knowing the laws of mechanics and all the dice’s properties. The randomness here is emergent, not fundamental. All randomness at human scale is of this sort, and in principle every human-scale phenomena are determined in advance, even you reading this text right now! Making a quantum choice then breaks this deterministic chain of events. In other words, if some supernatural intelligence knew everything about the universe at the moment of your birth, it could predict everything about your future life, except if you’re going to that Italian or Chinese restaurant. In summary: you escape determinism. - In the Many-Worlds Interpretation: This is a popular interpretation among researchers working on the foundations of physics. In this interpretation, during a quantum process, the state of the universe splits into all possible outputs of the process, called "branches", each of which behaves as an independent universe. We then have two branches, one in which you go to the Italian restaurant, and one in which you go to the Chinese restaurant. Both exist simultaneously in the abstract state space of the universe. If the result turns out to be the Italian restaurant, you can take confort in the idea that, somewhere, you are also enjoying the Chinese restaurant. Lucky you! In summary: you end up doing all the options at once. - How does it work? Mobile phones contain an element that can measure quantum processes: the camera! The detection of light by a pixel is subject to quantum fluctuations (known as shot noise), and constitutes a quantum measurement as discussed above. When you tap "Quack it", the app takes a picture and uses these fluctuations to produce a random number, which is then used to pick one of your options with equal probabilities. Shortcuts are available for common entries, such as yes/no, directions (for quantum exploring), or digits.

About

MP4 Converter & Compressor

Features
Read full description

MP4 Converter helps you convert, compress, resize, and extract audio from videos directly on your iPhone. Import videos from Files or Photos, choose your output format, adjust resolution or quality, rename the export, and save or share the finished file. Your videos are processed locally on your device. Features: - Convert videos to popular formats - Compress videos to reduce file size - Resize videos with resolution options - Extract audio from video files - Rename, preview, share, and save exports - Keep converted files in your library and history Privacy Policy: https://rakholiya-app-policy.blogspot.com/p/privacy-policy.html Terms of Use: https://sites.google.com/view/terms-of-use-00/home

Screenshots

Quantum Quack4 screens
MP4 Converter & Compressor4 screens

Verdict

The call

The clearest difference is in-app purchases: Quantum Quack at none against MP4 Converter & Compressor's 3. Quantum Quack also leads on ads (none vs shown) and update cadence (every 2 days vs every 5 weeks). On price there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. MP4 Converter & Compressor sells 3 in-app purchases, starting at $2.99 per 7 days. Quantum Quack asks for nothing beyond the download.

UpkeepUpdate frequency

Quantum Quack ships an update every 2 days, MP4 Converter & Compressor every 5 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard5 real differences Β· 1 level
Quantum Quack versus MP4 Converter & Compressor: the parameters behind the verdict, then further details
ParameterQuantum QuackMP4 Converter & Compressor
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 5 weeks
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS15.0 β€” better17.0
Further details β€” not scored
Size1 MB52 MB
Age rating4+4+
DeveloperMorgan FacchinVenish Rakholia

In-app purchases

None

Quantum Quack

No in-app purchases

3 purchases

MP4 Converter & Compressor

Subscriptions2
  • pro_access_weekly$2.997 Days
  • pro_access_monthly$5.991 Month
One-time1
  • pro_access_Lifetime$19.99

Questions

Is Quantum Quack free?
Quantum Quack is free to download, with no in-app purchases.
Is MP4 Converter & Compressor free?
MP4 Converter & Compressor is free to download, with in-app purchases available.
Do Quantum Quack or MP4 Converter & Compressor have ads?
MP4 Converter & Compressor shows ads; Quantum Quack does not.
Which is updated more often, Quantum Quack or MP4 Converter & Compressor?
Quantum Quack ships an update every 2 days, and MP4 Converter & Compressor every 5 weeks. Most recently, Quantum Quack was updated on October 14, 2026 and MP4 Converter & Compressor on October 7, 2026.

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