a few years back I made a similar DCA website, you can find it at: https://coinsavers.net
The site has helped me to take the timing anxiety out of buying; it was initially made as a SAAS, but I've abandoned that idea. Please don't sign up with too many ;)
if GDP grows such that the smallest subdivision of one bitcoin (called 1 satoshi) becomes too expensive, extra decimals are added. So instead of making new coins, the existing coins will be subdivided in smaller pieces.
The site has helped me to take the timing anxiety out of buying; it was initially made as a SAAS, but I've abandoned that idea. Please don't sign up with too many ;)