steem upvote bot tracker is developed by @yabapmatt , This platform provides bid based voting bots.
However , payouts are not guarrented .

Bot accepts payment in USD,Steem,SBD.
There is Next Vote column which shows time for next vote.Proceed with following steps.
If after 10 minutes the row becomes not green then negative ROI (after curation).

Always look for bot steem power , followers , if there is negative ROI then it is over bidded kindly stay away from it.

If after 10 minutes the row becomes green means positive ROI(after curation).

since it is positive ROI(after curation) then look for bid option.Select details on action button then you see like that

postive ROI you can select based on % vote share here both get 50% each.

always not look for vote value higher ,there can over bidding .

Instead look for vote value with lower values as there can be less bidding.

means you can get postive ROI easily.

you need to get more vote share as per your bid that's the secret.
comparison of two bid systems

greater vote share in terms of bid value.however this not happen always.

vote share with less % vote.

conclusion

1. look for bot with higher steempower and followers so that your bid reach , influence big community.
2. stay away from negative ROI as it is over bidded.
3. look for positive ROI as less bidding and your vote share increases as per bid value.
   4.always not look for big vote value.
   5.look instead less vote value.

interested to know from steemians any suggestions .

Thanks
Prabhakar Felis Ekka
@prabhakarfekka