Hivemind is a Condorcet (ranked choice) voting app that uses Bitcoin Signed Messages to cryptographically sign the opinion of each participant. It stores all data on IPFS.
The app is intended to be used by small groups of people to make decisions together, such as friends, coworkers or familymembers to decide what restaurant to go to, which movie to watch or to pick a name for a new product for example.
Android version is now available on Google Play, iPhone version will follow soon
You can find more information here: www.thehivemind.com