You can easily estimate how many rewards you will receive over different periods of time.
Holding income section
For vDOT - Ex: 1000 DOT during 1 year
vDOT rewards calculator
For vMANTA - Ex: 1000 DOT during 30 days
vMANTA rewards calculator
For vGLMR - Ex: 5000 GLMR during 5 years
vGLMR rewards calculator
Estimated rewards formulas:
1 Day Est. rewards = Input num * ( (1+APY) ^ (1/365) - 1)
7 Day Est. rewards = Input num * ( (1+APY) ^ (7/365) - 1)
30 Day Est. rewards = Input num * ( (1+APY) ^ (30/365) - 1)
1 Year Est. rewards = Input num * ( (1+APY) ^ (365/365) - 1)
5 Year Est. rewards = Input num * ( (1+APY) ^ (1825/365) - 1)