Tired of using websites, own developed excel sheets or the good old calculater to get to know which ratio / cadence is the best for the next race or your epic fixed trans alp trip?
Then get this fixed gear ratio app brought to you by a bunch of swabian fixed gear riders and support their epic project called "Heaven x Helden Geneve-Nice Fixed" by buying this thing.
https://shutuplegs.de/2018/03/black-forest-fixed-heaven-x-helden/
https://www.facebook.com/HeavenAndHellCycleClub/
https://www.instagram.com/heavenandhellcycleclub/