Simple Coin Flip
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About this app
15 years later... an AI-assisted refactor of the modern rewrite of the app that started it all. Still free, still ad-free, and still open source.
Tap the coin or shake your phone. It flips, it lands, it tells you which side came up. That's the whole pitch — everything else exists to make that one interaction pleasant.
★ 82 COINS TO FLIP
All 50 US state quarters, plus the District of Columbia. The George Washington dollar, the JFK half-dollar and the Sacagawea dollar. 24 national Euro designs. The Canadian Loonie and Toonie. A two-headed dollar, for when you'd rather not leave things to chance. Or pick Random and let the app choose a different coin every single flip.
★ FLIP YOUR OWN COIN — FINALLY!
Put your own photos on heads and tails. Pick an image, frame it with pan, zoom, rotate and mirror, and your coin joins the picker pinned to the top of your favorites. It's ringed in the same colors the app writes HEADS and TAILS in, so any picture still reads as a coin — switch the ring off if you photographed an actual coin.
★ STREAKS
Turn it on and a run of identical results counts up beside the result: HEADS ×7. Your longest run for each side is kept in Settings. Streaks survive a restart, because the whole point is holding your run up to somebody hours later.
★ SOUNDS — NEW
The coin whirs as it spins and rings as it lands, and a new record plays a fanfare. Prefer the sounds this app has made since 2011? Set Sound Style to Classic.
★ FAVORITES
Star the coins you actually use and they collect in their own section at the top of the picker, so you're not scrolling past all 51 quarters to find the Loonie. Or just search.
★ CALL THE SIDES WHATEVER YOU LIKE
Custom labels replace HEADS and TAILS with anything you want. Yes / No. Beer / Tacos. CLAUDE / HUMAN.
★ PROVE IT'S FAIR
Not convinced it's random? The built-in Diagnostic Test flips the coin up to ten million times and shows the split between heads and tails settling as it goes, and how often the result changed. Want a different entropy source? Swap Kotlin's Random for Java's SecureRandom in Settings. (Sorry — still no cheating.)
★ BUILT FOR MODERN ANDROID
Jetpack Compose throughout, with Material You colors pulled from your wallpaper on Android 12+. Light and dark. Portrait and landscape. Heads and tails tallies with a one-tap reset. Sound, haptics and animation you can each switch off. 13 languages.
★ NO ADS, NO TRACKING, NO ACCOUNT
No advertising. No analytics. Nothing to sign up for. The app asks for exactly one permission — vibrate — and has no internet permission at all, so it couldn't phone home if it wanted to.
Open source code, released to the public domain:
https://github.com/banasiak/CoinFlip2
=== FOR LONGTIME USERS ===
Yes, this is the same app, from the same developer, signed with the same key it had in 2011. Simple Coin Flip has been torn down and rebuilt twice since — once in 2023 as a Modern Android Development app, and again in 2026 with an AI pair programmer doing the typing. It is still, fundamentally, an app that shows you a picture of a coin. It is still free, still no ads or unsafe permissions, and still open source.
No Android Wear support. I'm not interested in it anymore. Go buy a G-Shock, you'll be happier.
No more add-on packs, either. Google eventually realized that an official API for loading resources out of any app on your phone was not great for privacy, and removed it. If you bought the Simple Coin Flip Mega Pack back in the day, thank you — every state quarter that was in it now ships in the app for free.
Coin images come from the United States Mint and the European Central Bank. The Claude Code coin wears Claude Code's own mascot. //TODO: Write letter to Canada begging forgiveness.
Tap the coin or shake your phone. It flips, it lands, it tells you which side came up. That's the whole pitch — everything else exists to make that one interaction pleasant.
★ 82 COINS TO FLIP
All 50 US state quarters, plus the District of Columbia. The George Washington dollar, the JFK half-dollar and the Sacagawea dollar. 24 national Euro designs. The Canadian Loonie and Toonie. A two-headed dollar, for when you'd rather not leave things to chance. Or pick Random and let the app choose a different coin every single flip.
★ FLIP YOUR OWN COIN — FINALLY!
Put your own photos on heads and tails. Pick an image, frame it with pan, zoom, rotate and mirror, and your coin joins the picker pinned to the top of your favorites. It's ringed in the same colors the app writes HEADS and TAILS in, so any picture still reads as a coin — switch the ring off if you photographed an actual coin.
★ STREAKS
Turn it on and a run of identical results counts up beside the result: HEADS ×7. Your longest run for each side is kept in Settings. Streaks survive a restart, because the whole point is holding your run up to somebody hours later.
★ SOUNDS — NEW
The coin whirs as it spins and rings as it lands, and a new record plays a fanfare. Prefer the sounds this app has made since 2011? Set Sound Style to Classic.
★ FAVORITES
Star the coins you actually use and they collect in their own section at the top of the picker, so you're not scrolling past all 51 quarters to find the Loonie. Or just search.
★ CALL THE SIDES WHATEVER YOU LIKE
Custom labels replace HEADS and TAILS with anything you want. Yes / No. Beer / Tacos. CLAUDE / HUMAN.
★ PROVE IT'S FAIR
Not convinced it's random? The built-in Diagnostic Test flips the coin up to ten million times and shows the split between heads and tails settling as it goes, and how often the result changed. Want a different entropy source? Swap Kotlin's Random for Java's SecureRandom in Settings. (Sorry — still no cheating.)
★ BUILT FOR MODERN ANDROID
Jetpack Compose throughout, with Material You colors pulled from your wallpaper on Android 12+. Light and dark. Portrait and landscape. Heads and tails tallies with a one-tap reset. Sound, haptics and animation you can each switch off. 13 languages.
★ NO ADS, NO TRACKING, NO ACCOUNT
No advertising. No analytics. Nothing to sign up for. The app asks for exactly one permission — vibrate — and has no internet permission at all, so it couldn't phone home if it wanted to.
Open source code, released to the public domain:
https://github.com/banasiak/CoinFlip2
=== FOR LONGTIME USERS ===
Yes, this is the same app, from the same developer, signed with the same key it had in 2011. Simple Coin Flip has been torn down and rebuilt twice since — once in 2023 as a Modern Android Development app, and again in 2026 with an AI pair programmer doing the typing. It is still, fundamentally, an app that shows you a picture of a coin. It is still free, still no ads or unsafe permissions, and still open source.
No Android Wear support. I'm not interested in it anymore. Go buy a G-Shock, you'll be happier.
No more add-on packs, either. Google eventually realized that an official API for loading resources out of any app on your phone was not great for privacy, and removed it. If you bought the Simple Coin Flip Mega Pack back in the day, thank you — every state quarter that was in it now ships in the app for free.
Coin images come from the United States Mint and the European Central Bank. The Claude Code coin wears Claude Code's own mascot. //TODO: Write letter to Canada begging forgiveness.
Tap or shake to flip. 82 coins plus your own. No tracking, no cheating.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
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Ratings and reviews
2.38K reviews
Lacey Van Nortwick
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January 21, 2024
This app has followed me around for years, across different devices, being there to help me make decisions when my brain has gone on walkabout, but my body still needs food to help stop itself from falling down. It's nice to see it get an update. Thank you for saving me from ever needing to search for the quarter I have inevitably misplaced. Update: this review originally ended with a feature request that was addressed and updated within days. Six out of five stars.
44 people found this review helpful
Richard Banasiak
January 19, 2024
Thanks for the kind words. If you update to the latest version I think you'll be pleased. I appreciate your support over all these years!
Leland Davies
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September 16, 2026
actually changed my life. There was a void in my soul that could never be filled until today, where I found and installed Coin Flip and it has altered every fibre of my being. I have learnt what true happiness in this one, pure app
2 people found this review helpful
Chris H
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September 4, 2026
very nice app - used as cognitive flexibility test. even the updated app is better, quite an impressive feat. how about a red/ green token? your custom coin feature is great though.
Richard Banasiak
September 5, 2026
🙏
What’s new
Your coin finally sounds like one.
• SOUNDS: the coin whirs as it spins and rings as it lands. Prefer the classic sounds? Settings › Sound Style
• DIAGNOSTIC TEST: redesigned as cards, with heads and tails settling as it runs
• LANDSCAPE: About and the Diagnostic Test open from the side, so the coin stays in view
• Open on the ? again: Settings › Clear Previous Result
• Predictive back, a quicker Settings transition and a smaller download
• SOUNDS: the coin whirs as it spins and rings as it lands. Prefer the classic sounds? Settings › Sound Style
• DIAGNOSTIC TEST: redesigned as cards, with heads and tails settling as it runs
• LANDSCAPE: About and the Diagnostic Test open from the side, so the coin stays in view
• Open on the ? again: Settings › Clear Previous Result
• Predictive back, a quicker Settings transition and a smaller download
