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ACL Return to Sport

Updated August 17, 2026

Recovery tracking app

Join the waitlist for the recovery tracker

One email address, two messages at most before launch, and a working product on the other side. Here is exactly what we are building and what we are not.

Everything on this site points at the same handful of numbers, and every one of them is measured in a clinic and then written on a piece of paper that gets lost. The tracker is the fix: your quadriceps and hamstring numbers, your four hop tests, your ACL-RSI score and your effusion grade, plotted against the thresholds, from week one to two years.

What it does

  • Records the measurements your physical therapist already takes, in the units they use (newton-meters, kilograms of force, centimeters, seconds).
  • Computes limb symmetry index automatically and shows the gap to 90% instead of a raw number.
  • Tracks ACL-RSI over time, because the change matters more than any single score.
  • Produces a one-page summary you can hand to a surgeon, a physical therapist or an athletic trainer without explaining what the columns mean.
  • Works on a phone in a gym, offline, with the screen you need open in one tap.

What it does not do

  • It does not clear you to play. No app can, and any app that says it can is lying to you.
  • It does not diagnose anything.
  • It does not sell your data. There is nothing to sell: measurements live on your device and sync only if you ask.

What we ask for now

An email address. Not a surgery date, not a diagnosis, not a phone number. If you tell us where you are in the process, we use it to decide what to build first, and that field is optional.

Recovery tracking app

Get told when the beta opens

We are building the thing this site keeps pointing at: a tracker that records your strength numbers, your hop tests, and your ACL-RSI over time, and shows you the gap between where you are and where the testing thresholds sit. Two emails at most before launch, unsubscribe in one click.

We ask for an email address and nothing else. No surgery date, no diagnosis, no health information. See the privacy policy.