awardwallet.com
I don't think he's looking for just a way to keep track of miles/points (e.g. Awardwallet, pageonce, manilla)
The challenge is keeping track of account open date, cancel by date, spend by date, spending requirements, etc. these sites track only acct balances and points.
I personally use a google drive spreadsheet with similar colums to 'squasher'
Its pretty advanced with formulas...If statements....I once had some extra time on my hands......
Maybe ill share it some time, have to strip the personal info first.