Hevy is a very good training log, and for a lot of people it is the right choice. Here is where REPWIND diverges — and where it does not compete.
Both record sets, total your volume, keep a history and estimate a 1RM. On that ground Hevy has years of polish behind it, and a community REPWIND does not have.
REPWIND plays every exercise as a real lift instead of showing a frozen thumbnail, and ends the session on an anatomical map: which muscles worked, primary in red, secondary in orange. The question stops being “how much did I lift” and becomes “what did I actually load”. Add bar-path analysis that runs on the phone, and daily loads adjusted to your sleep and heart-rate variability.
Hevy has a real social feed, a shared routine library and a user base that feeds both. REPWIND has none of that. If what gets you back to the gym is seeing your friends' sessions, stay with Hevy.
To see what this looks like: the ten muscle groups on this site use exactly the anatomical plate the app draws.
The other comparisons: Strong · Fitbod · Jefit · FitNotes · Boostcamp
The journal, the anatomical map and all 257 catalogue exercises — free to start.