A lifting log that tells you when to add weight.

Ferro fills in last time's sets, suggests the next weight once you complete every set, and tells you to repeat the weight when your reps slipped.

When to add weight

Each lift shows what you did last time and the next step, like “Try 152.5kg (+2.5)”, or tells you to repeat the weight when your reps slipped.

Ferro keeps your place in your program, and each session opens with last time's weights and reps filled in.

Ferro reads the workouts and meals you logged and tells you what to change next.

What is progressive overload?: Doing a little more over time: a bit more weight, or more reps at the same weight. Muscles adapt to what you ask of them, so small, steady increases keep you getting stronger.
How does Ferro decide when to add weight?: When you finish every set of a lift, not counting warm-ups, your next session suggests a little more weight. Big lifts such as squats and deadlifts go up 2.5 kg, smaller lifts such as curls 1.25 kg. In pounds, those jumps are 5 lb and 2.5 lb.
Does Ferro learn how I progress?: Yes. Ferro looks at your recent sessions of each lift. If you usually add a different amount and still finish every set, Ferro matches your usual jump, up to a small limit. If your reps slipped after recent increases, Ferro tells you to repeat the weight first.
What if I'm having a rough day?: Under “Feeling rough today?” on your workout, you can drop a few of the sets you have left or rest today. Your weights stay where they were. Nothing changes unless you choose.

Last time's numbers are already there, with the next step beside them.

App screens show a demo account.