Use the Tools tab
The Tools tab holds quick calculators and planners. They work offline, and weights show in the unit you chose in Settings.

Video, 21 seconds, with narration and captions. 100 kg: 25 + 15 per side, exact. 103 kg on a 15 kg bar, exact.
What is in there
Section titled “What is in there”Prep
- Warm-Up: a guided warm-up, using your own routine if you have written one.
Calculate
- Training %: working weights at each percentage of a lift, with the plates to load.
- Barbell Loader: shows which plates to put on the bar for a target weight.
- kg and lb: converts between the two.
Diagnose
- 1RM Estimator: estimates your one-rep max from a lighter set.
- Strength Ratios: compares your lifts against each other to show what is holding you back.
Compete
- Meet Day (Pro): a warm-up room and six-attempt board.
- Sinclair: a score that lets you compare totals across bodyweights.
- Robi Points: your total against the world record for your category.
Pro tools show a lock until you subscribe.
Load the bar
Section titled “Load the bar”- Open Barbell Loader.
- Type your target weight, or use the stepper.
- Choose your bar from the Bar menu.
- Read the plate drawing and the per-side list.
The loader uses the plates in your default gym. To change them, go to Locker, then My Gyms. If the target is lighter than the bar, you will see a message saying so.
Estimate your one-rep max
Section titled “Estimate your one-rep max”- Open 1RM Estimator.
- Enter the weight you lifted.
- Set the number of reps with the stepper (1 to 15).
- Pick a formula from the Formula menu if you want a different one. The estimate and a table of percentages update straight away.
- To keep the number, choose the lift and tap the button that sets it as your PR. You will be asked to confirm.
Estimates get less reliable as reps go up, so sets of five or fewer give the best guide.
Strength Ratios in a nutshell
Section titled “Strength Ratios in a nutshell”Enter or load your lifts and the screen shows which ratios sit inside a healthy range and which one to work on first. Numbers you type over are treated as “what if”, and never count as real records.