The app that tells you what weight to lift
The hardest question in the gym is not which exercise to do. It is how much to put on the bar. TagdiBody answers it with a number on every set, and this page explains where that number comes from.
Updated 25 August 2026
Your starting weights
When the app builds your plan, every weighted lift gets a starting weight computed from your bodyweight, your experience level, and the lift itself. A leg press starts far heavier than a lateral raise because the app prices each exercise individually, not by rough category. The number is deliberately a little light: a first session that feels easy costs you nothing, a first session that buries you costs you a week.
Every lift is a rep range
Say the app prescribes 5 sets of 5 to 7 at 60 kg. The bottom of the range is the pass mark, the top is the aim:
- Hit the top on every set and next session the weight goes up: 2.5 kg on lower-body lifts, 1.25 kg on upper-body lifts. Pound lifters get whole plates, 5 lb and 2.5 lb.
- Land inside the range and the weight holds while you chase more reps. Managing 6 when the aim was 7 never takes weight away.
- Fall below the bottom and the weight steps down one increment immediately, so your next session is one you can actually finish. No three-strikes rule, no surprise ten percent cut.
Bodyweight and band exercises progress by adding reps. Timed holds like the plank progress in 5 second steps. Within a session, the weights and reps you log carry forward into your remaining sets, so a heavy day adjusts itself in real time.
Life happens, the plan bends
Coming back after ten or more days away, the app offers to trim your working weights by ten percent for the first session back, one tap to accept or decline. Train an extra day and it is a one-off workout: fully logged, counted in your charts, and it never moves your plan or your weights. Miss a day and the plan simply slides forward. There is no missed-workout mark anywhere in the app.
That is the whole system: a number on every set, honest reasons behind it, and no judgement in the calendar.
More: why it costs 9.99 once instead of a subscription, or how it compares with the subscription trackers.