OnSimmer tracks the perks buried in your annual fees, nudges you before credits expire, and keeps dormant cards open with a tiny charge that goes to charity.
No spreadsheets, no missed credits, no surprise dormancy closures.
Check off credits as you spend them and watch each card's utilization climb toward 100%.
A tiny recurring donation keeps rarely-used cards open — and does a little good while it's at it.
See whether each fee is paying for itself — in plain dollars — and decide what's worth keeping.
The average member rescues hundreds in credits they'd have let expire. Setup takes two minutes.