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A minimalist reflex game where a shape expands from the center. Tap when it aligns with the target. Survive long enough and the shapes transform — circle to star to crown to supernova. 3 difficulty levels. 50 stages. 3 lives.
Hey Product Hunt 👋
I'm Kris— a solo developer who just shipped
his first mobile game. This is Pulse.
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THE IDEA
I wanted to build the simplest possible reflex game.
No enemies. No power-ups. No story. Just: tap when
the shape aligns with the target. Miss once and the
expanding ring blows past. Tap too early and it resets.
One mechanic. Infinite replayability.
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WHAT MAKES IT DIFFERENT
Most reflex games get harder by making you faster.
Pulse gets harder by changing the shape.
Every 8 points, the shape transforms:
· Stage 1 → Circle (easy to judge)
· Stage 2 → Diamond (suddenly harder)
· Stage 13 → 5-pointed star (your instincts break)
· Stage 38 → Heart (bezier curves, brutal timing)
· Stage 50 → Supernova (96-point star — almost nobody reaches this)
50 total shapes. Each one retrains your eyes slightly.
I computed all of them using SVG polygon math at load
time — no design assets, just trigonometry.
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THE 3 DIFFICULTY LEVELS
EASY — 1 ring. Forgiving. Good for learning shapes.
MODERATE — 3 rings of the same shape. One glows white.
You must tap when the expanding ring hits the glowing
one. The other two are decoys.
HARD — 5 rings + a ghost ring. The ghost ring is a red
dashed ring that moves 60% faster than the real one.
It hits the target position before the real ring does.
Tap when the ghost aligns → TRICKED. Lose a life.
This mechanic makes Hard mode genuinely evil.
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BUILT WITH
· React Native + Expo
· SVG polygon math for all 50 shapes
· expo-haptics for hit/death feedback
· No backend — offline-first, zero server costs
· Google AdMob for ads
· RevenueCat for Remove Ads IAP
Total build time: about 2 weeks of evenings.
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WHAT I'D LOVE FROM YOU
1. Try Hard mode and tell me how far you get
2. Any shape ideas I should add for stages 51–60?
3. Honest feedback on the hit window — too tight? Too loose?
Download link in the comments. Free on Android.
iOS coming soon.
Thanks for checking it out 🙏
— Kris
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About Pulse on Product Hunt
“One tap. 50 shapes. How far can you go?”
Pulse was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #58 on the daily leaderboard. A minimalist reflex game where a shape expands from the center. Tap when it aligns with the target. Survive long enough and the shapes transform — circle to star to crown to supernova. 3 difficulty levels. 50 stages. 3 lives.
Pulse was featured in Android (57.4k followers), Productivity (658.4k followers) and Games (98.8k followers) on Product Hunt. Together, these topics include over 225.4k products, making this a competitive space to launch in.
Who hunted Pulse?
Pulse was hunted by Pulse. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Pulse