App Store
Version 2.1.0 · 2024-05-21
Fixed bugs and optimized performance.
Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 2.1.0, updated 2024-05-21.






Store screenshots supplied by the developer.
Crazy Hard Math Challenge - You get it? An infinite number of math calculations await you, 2 buttons, right or wrong, and a very short amount of time.
Race the clock to get a high score, take the easy, normal or hard option, it's your choice, but with 3 different leaderboards, why not prove to your friends who is the king of math?
It really doesn't get much harder than this! Are you up for the challenge?
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
No review analysis published for this app.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
Not yet tested. No analysis has been run for this app, so there is no version or date to report.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
Fixed bugs and optimized performance.
crazy-hard-fast-math-reactionWhat the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.