Hello @christian
For coins like $ETH (-1.58%)
$ADA (-5.84%)
$AKT (-19.93%)
$DOT (-28.77%)
$AVAX (-18.82%)
$MATIC (-2.24%) and possible more.
An approximate "%" APR/APY with your monthly or weekly reward would be a very good implementation as these currencies are increasingly more popular + higher marketcap. (BTC and ETH adoption these days)
"Worst" case APR/APY can be configured by the own user.
It would be a feature that separates the application from the rest for the better, pretty clear.
If more feedback is needed I can help ofc.