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SETLINE

Strength / iPhone + Apple Watch

The next set,
clearly.

Plan on iPhone. Log on your phone or Apple Watch. See the weight and reps, record what happened, and get back to lifting.

Try the demo Private alpha

Made for the time between sets.

Interactive demo · Sample workout
SETLINESTRENGTH / A

Back squat

2 warm-up · 3 work

Work set 1 · Up next

75kg
5reps

Warm-up and work sets stay distinct. This target stays as planned.

View all sets2 / 5 recorded
  1. Warm-up 140 kg × 8 planned8 reps
  2. Warm-up 260 kg × 5 planned5 reps
  3. Work set 175 kg × 5 plannedUp next
  4. Work set 280 kg × 5 plannedLater
  5. Work set 380 kg × 4 plannedLater
THE NEXT SET, CLEARLY.
01 / BEFORE

A plan that’s yours.

Build your week on iPhone. Choose the exercises, warm-ups, work sets and rest. Keep a draft until it’s ready.

02 / DURING

Less phone. More lifting.

Log on iPhone or Apple Watch. See the next set, record the reps, and take your rest. Fix a tap when you need to.

03 / AFTER

The record stays useful.

Review completed workouts. Export selected SETLINE sessions. Bring your older StrongLifts history along, too.

An athlete takes a quiet moment between sets beside a loaded barbell.

The workout is allowed to be real

Fact,
not failure.

If five became four, record four. The plan is what you intended. The record is what happened. SETLINE keeps that distinction clear.

No red badge. No broken streak.
Just the set you did.

I built SETLINE because I was tired of spending the time between sets staring at my phone.

A Dark Flow instrument

Close to the set.
Part of the whole.

SETLINE keeps its own workout history. Completed sessions also join your Dark Flow history—alongside your runs, rides, and everything else you do.

Meet Dark Flow
Orange strength signals from a worn barbell join the wider cyan movement history.

Private alpha

SETLINE is in private alpha, with access limited to invited testers. Public downloads aren’t available yet.

Try the demo