The first app for spending cryptocurrency in stores. Instantly. Start with a Flexa balance in the coin of your choice. We provide support for Bitcoin, Ether, Bitcoin Cash, and Litecoin, with many more currencies coming soon. Take Flexa with you to buy food, electronics, clothes and more. We're integrated with payment terminals in over 35,000 locations worldwide—and counting. When you're ready to pay, just tap to reveal a flexcode. Don't worry about typing in a wallet address or amount; we instantly convert your payment at the market rate.
Zen is a decentralized financial platform, built from scratch with the goal of providing people with a secure, scalable and useful infrastructure for creating their own financial instruments, and trading them directly without intermediaries.The Zen blockchain is secured by multiple proof-of-work algorithms, with token-holder voting on the balance between them. Multi-hash mining creates robust incentives for miners to deliver efficient, reliable security.Zen smart contracts are written and secured by a subset of the F* functional programming language, allowing users to: A) Prove the amount of resources a contract will consume and provide the necessary fees for running the contract to miners, removing the need for a “gas” based system.B) Prove their contracts meet a given specification, meaning they can prove the contract will definitely do (or not do) something given a specific set of parameters.The Zen platform comes with a built-in solution for oracles, which provide contracts with useful real world data.Finally, Zen is integrated with the Bitcoin blockchain, allowing contracts to observe and respond to native bitcoin transactions