Life & fun · alternatives · 2026
24 alternatives to Is This Prime?
Can you tell which numbers are prime?
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Is This Prime? launched in 2016; newer entries below may have overtaken it.
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Everything you need to know about any number
Jul 2026 · aboutnumber.com · its alternatives →
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Hey there! I'm the brains behind the math crossword game on my site. This game is all about making math a little more fun – users just drag and drop numbers to fill in the blanks and move on to the next level if they get it right. Let me know if face any issues or have any suggestions! :)
2024 · scientific.place · its alternatives →
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2024 · aravind.rs · its alternatives →
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Say numbers out loud as randomly as you can. Before each one, a predictor in your browser seals its guess, and a split-flap board shows how far ahead of chance it gets.
14d ago · lab.specr.net · its alternatives →
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2015 · zero.karaniwan.org · its alternatives →
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Recall the next Prime number in the sequence
Jul 2026 · prime-memory-challenge--dpjha84.replit.app · its alternatives →
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I’ve been building a few small games to help kids (and curious adults) build reasoning and logic skills. Think Word Ladder, Prime Hunter, Math Maze ,all in the browser, no installs. Would love feedback or suggestions for new types of puzzles
2025 · quizmathgenius.com · its alternatives →
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A game to fix your relationship with maths 😍
2015 · apps.apple.com · its alternatives →
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A game for designers: test your hex value skills
2015 · guessthehex.com · its alternatives →
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1+2=3▲58A hilarious brain messer about kid maths with 1, 2, 3!
2016 · apps.apple.com · its alternatives →
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Hi HN, I was already building a breakout game[1] just for fun, but then I thought—what if the bricks were news? So now, every time you smash a brick, you get a post and have to decide: read it or toss it. The idea came from realizing I skim through news way too fast, often skipping things that don’t immediately interest me. This was my way of slowing down and giving those overlooked posts a fighting chance. Give it a try! I also wrote a short post [2], detailing the physics behind the game. I spent quite a bit of time just fine-tuning the bounce logic: adjusting angles and adding random…
2025 · nabraj.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →