Bots are providing you with information on yields. If you want to control them, it is easy in some cases: You sent X SBD to the bot, and you got Y STU of upvote.
In other cases, "upvote services", like MonnowBooster, you have to relay on the data they provide. Because it can happen that an upvote is made by 500 vote sellers...
I make a daily balance. I make balances and compare them. Data is very volatile, the daily balance depends also on exchange prices. So I make balance in USD terms and Steem terms, and I'm watching more the longer term trend.
or use
They have data about author and curator rewards on the way. Steemitwallet, hasn't.
https://steemworld.org/@rem-steem and http://steem.supply/@rem-steem