MusicTechHelpGuy demos Free Tempo Recording in Logic Pro, a feature made for capturing chord ideas when you can't play cleanly to a click.
Hit record, play your chords at whatever pace feels natural, then tell Logic how to interpret the take: apply the region's tempo to the project, average it out, or snap the project tempo onto the region.
That last choice quantizes your loose playing into clean chords on the grid, so you can loop it, drop drums underneath, and start building a section right away.
It works best on simple rhythms like whole, half, or quarter notes. Get too loose with your timing and the analysis breaks down, so this is a fast way to sketch ideas, not a substitute for solid playing.