Simple Coin Flip

1.15K reviews
Content rating
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About this app

Completely FREE (no-ads) and doesn't require any unsafe permissions. Now supports phones and Android Wear watches!

On your phone: Simply tap the question mark or shake and view the result. Tap the coin or shake to spin the coin again.

On your watch: Say "Ok, Google. Start Coin Flip." Tap the question mark to spin the coin.

Spinning coin animation, sound, text, vibration, shake-to-flip and coin type are all configurable via the Settings menu. Verify the flip algorithm is truly random by running the built-in Diagnostic Test and flipping the coin 100,000 times (or more) while watching the results in real-time. (Sorry, no cheating!)

Add new coins from Google Play by clicking Settings -> Get More Coins.
50 State Quarters:
Australian Coins:
2 Euro Coins:

Open source app released under the GNU General Public License. Source code available here:

Currently supports both English, Spanish & French translations. Send me an email if you would like to help translate this app into your native language.

Quarter-dollar coin images from the United States Mint.

=== Version History ===

v6.4.1: New material design icons!

v6.4: Enhanced support for higher-resolution Android Wear devices, such as the Huawei Watch.

v6.3.3: Fixed an animation bug when running on Android 5.1.

v6.3.2: German translation courtesy of Michael Riepen.

v6.3.1: Improved compatibility with Android Wear 5.0.1.

v6.3: [a] Added Material theme for Android 5.0 (Lollipop) devices. [b] Automatically restart the app when adding new coins from Google Play so they are immediately loaded.

v6.2.1: [a] Centered the layout on wearable devices. (This hopefully fixes a layout problem on the LG G Watch R). [b] Put wearable animation generation and data transfer on a background thread to speed up initial app load.

v6.2: Optimized compiler options to shrink app from 3.6 MB to 2.3 MB.

v6.1: Expansion packs now supported on Android Wear devices. The coin selected via your mobile device will be automatically transferred to your watch.

v6.0: Experimental support for Android Wear! Flip a coin on your watch by saying "Ok, Google. Start Coin Flip."

v5.5.3: French translation by Spanti Nicola (RyDroid). Thanks RyDroid!

v5.5.2: Fixed layout issue when using non-English translations.

v5.5.1: Improved Spanish translations (or so I've been told).

v5.5: Fixed a rare condition where the animation thread would continue to run even when the app was paused.

v5.4.1: Enhanced compatibility of the "Get More Coins!" search feature with Google Play filters.

v5.4: New feature per request! The Diagnostic Test (previously known as Self Test) can now flip a user-configurable number of times. Configure this in the revamped Settings page.

v5.3.2: Clearer coin flip sounds.

v5.3.1: JellyBean menu icon tweaks.

v5.3: [a] Added support for ICS Holo Theme and Action Bar. [b] Added a "Rate App" button to bottom of the About dialog.

v5.2.1: Code fixes and cleanup.

v5.2: Added statistics feature per user request.  This is disabled by default.  Enable this feature in the settings menu  to keep a running total of Heads vs. Tails.

v5.1: Overall performance improvement. Optimized the way the coin animation is created which uses less memory and should prevent OutOfMemory errors when changing coins or switching screens.

v5.0.1: Added support for flipping by tapping anywhere on the screen.

v5.0: Added support for third-party add-in packs! Click Settings -> Get More Coins to download even more coins from the Android Market. More being added by a variety of developers all the time!

v4.2.1: [a] Added a "Random Coin" option if the SCF Add-on Pack is installed. (Its at the bottom of the list.) [b] Rewrote the shake detection code to increase simplicity and performance. [c] Updated to ICS menu icons. [d] Enabled ICS hardware acceleration. [e] Miscellaneous code cleanup.
Updated on
Sep 27, 2016

Data safety

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 parties
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No data collected
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1.15K reviews
john smith
November 17, 2022
The app is perfect and the rendering of all the sample coins is fantastic. I'd have bought the American Quarter pack in a second, just to get a look at all their beautiful designs, but without at least a few Canadian coins in the mix to justify the buy, say Loonies and Toonies, I'll live with the default coin. You missed an easy value added sales booster. Guaranteed just 2 more added to the 50+ American quarters would have made all the difference to a lot of Canucks popping for that package.
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Richard Banasiak
November 17, 2022
Good idea, John. This app is pretty old and Google is going to make me update it soon in order to comply with their policies. I'll be working on that soon and I'll make sure to get you a couple Canuck coins. ;-)
A Google user
August 6, 2019
I've been using this app for years now. Maybe a 100,000 flips so far. It's simple, it's tiny, it's reliable. All you need in coin flip app. I wish we could change the faces a lot more but overall still loved it. But I get that that would add more bulk to the app.
35 people found this review helpful
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A Google user
October 7, 2018
WHO CARRY COINS ANYMORE? I think this was the thinking behind this app. It does a very good job of flipping a coin and showing you the results. Not quite a pari-mutuel result ... but, who cares? If you've got to make a true/false decision, this will help. There is some simple stuff the author could have added to make this worth 5 stars: Make the coin say true/false, or yes/no or buy/save. And, I would have liked a way to keep the coin spinning until I decided to stop it. I teach bus driving, and when I have two students, I use this app to help decide who's driving first. Sometimes I have up to four students. If this app would have permitted me to add the first names of the students I would have paid for the app.
22 people found this review helpful
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What's new

New app icon - by an actual professional!

Note: the app is now compiled against the latest SDK for Android 7.0 (Nougat). The permission model has changed and now Google Play lumps all of the "safe" permissions into a single bucket called "Other". This app only requires the "vibrate" permission, but unfortunately that puts it in the same bucket as "receive data from Internet" and others. However, you can verify the app doesn't request any permissions via Settings -> Apps -> Coin Flip. Sorry. :(