Cryptathon is a free crypto paper trading app for Android. Practise trading Bitcoin (BTC), Ethereum (ETH) and Solana (SOL) perpetual futures with virtual money. No deposit and no risk to your savings.

Most trading simulators replay a price chart. On Cryptathon, your orders go into a live order book on the Minute Exchange matching engine and match against market makers and other traders. You learn how a real crypto exchange works before you trade with real money.

What you can practise

• Market and limit orders on a live order book

• Long and short positions

• Leverage, margin, funding and liquidation

• Take-profit and stop-loss orders

• Reading the order book, mark price and your profit or loss

A demo account in seconds

• Start with a guest account and get a virtual balance

• No bank details and no deposit

• Out of virtual money? Use the bankruptcy reset and start again

Compete and track your progress

• Free-entry trading tournaments with virtual prizes

• Monthly leaderboards, ranked by realised return

• Daily rewards and a practice streak

• Live positions, profit or loss and trade history

How it is built

Cryptathon runs on Minute Exchange, a full exchange stack I built: a Rust matching engine, Go services for wallet, risk, positions, funding, liquidation and market data, Kafka with Avro for events, PostgreSQL, and gRPC between services. The app is React Native (Expo) with Skia charts.

Virtual money only

• Free to download. No deposit and no paid entry.

• No real cryptocurrency is bought or sold.

• Virtual balances cannot be withdrawn, redeemed for real money or transferred.

• For adults aged 18 and over. For practice and education, not investment advice.

Get it on Google Play: https://play.google.com/store/apps/details?id=io.cryptathon.app