i found a free API (CoinGecko API (V3)) that allows you to obtain price information for a cryptocurrency coin. i simply processed the returned json response and turned them into the x and y axis values to be submitted to quickchart.io for plotting.
the call i’m using to extract historical data has this note:
so in order for me to chart prices per day, i have to provide a range over 90 days, then i pick the days i need to chart from the result. (if i provide a short range, say 10 days, i get price per hour!)
here’s the project link:
https://x.thunkable.com/copy/aec986f8153b26d0f6b9b55e073d2c07
here are a few screen shots.
these charts show the price of bitcoin in last 30 days and last 90 days.
i provided a few, recent popular coins in the viewer list.
don’t forget me after you get rich because you used the information from my app! haha!