Tracker by format
Spin & Go tracker: your ROI after fees, by buy-in
Your Spins, read off your own hand histories: what each buy-in returns once the fees are paid, and whether the sample says anything yet.
Recognised as Spins today: Winamax Expresso and PokerStars Spin & Go. Elsewhere, a Spin is imported as a tournament and counted with them, not apart yet.
ROI, fees included
Profit and ROI with its interval, greyed while the interval still contains zero. The entry fees on their own line, with the ROI before fees. One ROI per buy-in, with the number of games behind it.
A HUD for short stacks
At a Spin table, by default: VPIP, PFR, 3-bet, steal and fold to all-in. Read from your Spins only, never mixed with your cash games.
Push/fold with the payouts
Decisions works out the push/fold equilibrium with the ante, the players left to act and the prize structure (ICM).
How your opponents play Spins
Reveal shows what the players in your own hands did, cut to Spins and to the stack depth. In Pro.

Track your Spins on your own hands.
The tracker, the HUD and Results are free, for good.