01 / Weigh-ins
Bodyweight is its own record
Weigh-ins live in their own table. That is what lets the curve move when you get lighter at the same belt weight: drop three kilos and hold +40, the pull-up got harder, and the graph says so.
The data model, in plain language
What is actually different, line by line.
Nothing on this page is a feeling. Every line below is a decision in how a set gets stored. Check any of it against what the app shows you in your first session.
The load is one number, and it is the one you lifted.
This is the whole app in one line, and the reason a general logger cannot show you the same thing without changing how it stores a set. One factor per exercise decides how much of you counts. Nothing in between needs a special case.
How a set is stored
total = added + bodyweightFactor × bodyweight
Both examples below use a bodyweight of 81.5 kg, from a July session.
Weighted pull-up · factor 1
40.0 + 1 × 81.5 = 121.5 kg
All of you leaves the ground, so all of you counts alongside the plates on the belt.
Back squat · factor 0
100.0 + 0 × 81.5 = 100.0 kg
Your feet stay on the floor, so the bar is the whole story and your bodyweight stays out of it.
Where the numbers come from.
All of it visible on your own first session02 / Effort
RPE is part of the estimate
Reps in reserve is 10 − RPE, and Epley runs on reps plus that. Five reps at RPE 8 is treated as a seven rep set taken to failure, which lands on 81.1% of a one rep max. The Reactive Training Systems chart says 81.1% too.
03 / The cap
A burnout set cannot fake a max
Epley drifts once you pass about twelve reps, so reps to failure is capped there. A set of twenty at RPE 6 will not hand you an absurd number, and a true single returns its own load unchanged.
What that looks like at the bar.
Chalk on your hands, three minutes rest04 / Variants
A variant is its own lift
A slow muscle-up and a no-dip muscle-up progress at different rates, so they get their own entries and their own curves. Filing them as one line with a comment is how you lose the only signal worth having.
05 / Entry
A stepper, not a keyboard
Belt weight goes in with two taps. Between heavy singles you have chalk on your hands and a rest window measured in minutes. At that point entry speed stops being a nicety and becomes a functional requirement.
06 / Storage
The phone first, your account second
Sets are written to a database on the device, so an outdoor rig with one bar of signal is never a problem. From there they sync to an account nobody else can read, which is why a new phone costs you nothing. Nothing is sold, and no part of the app carries advertising.
Fourteen days free, then it asks.
Free to download. $5.99 a month or $44.99 a year after the trial, billed by Apple. The full breakdown is on pricing.
