Floating mana tracking
WUBRG plus colorless, with a running total.
Big Commander turns make big mana, and somewhere around the fourth ritual you stop being sure what is still floating. Manatable's mana tracker covers the full WUBRG pool plus colorless, with a running total that stays on screen.
Tap out, watch the total
Tap up each colour as you tap your lands and rocks: white, blue, black, red, green, colorless. The pool updates instantly and the total moves with it, so three cards into a combo you can just look.
Stays out of the way until you need it
The pool persists through the turn and is ready the next time you tap out, but it stays tucked away until you open it. Phone screens are crowded enough during a Commander turn.
Check before you swing
Floating mana works with commander damage: see what you have left before committing to a final commander swing, or before recasting out of the command zone and paying the tax.