Letter to Yourself - Send a physical letter to your future self
Crypto Tracker - Never miss an opportunity to invest in bitcoins & ether
Future Me - Send an email to your future self
Cryptoradar - Find the best prices to buy or sell cryptocurrencies
Letter to my future self - Letter to my future self is a prominent email scheduling service that gives you the opportunity to create a letter with goals and thoughts for your future self and schedule a date for sending it.
Crypto Bar - Open-source menu bar app for cryptocurrencies prices