Stronger, one set at a time.

Log a set with one tap. Cumo reads your numbers and tells you what to lift next, right in the chat.

Download on the App Store
Cumo workout screen
Next time: 55 lbYou had 3 left in the tank.
New recordBench press · 55 lb × 8

Strength training in its simplest form. Open today’s workout, tap each set
8 × 50 lb✓and Cumo sets up the next
one. Your history does the planning.

A coach that listens.It plans around your sleep.

1
It reads your night
Sleep7.6 h
↑ 0.4 h
HRV68 ms
↑ 11 %
Resting heart rate52 bpm
↓ 4 %
Cumo asleepzz
2
It scores your morning
Cumo, happy0Ready
DrainedTiredOkayGoodGreatGreat
From your sleep, HRV and resting heart rate.
3
It tells you what to do
TodayWell recovered. Today can be a heavy one.
Pull day45 min
Cumo
Cumo saysShoulders has 22 sets this week.Swap Lateral raise for something lighter today.
Cumo cheering

Every number gets a sentence. Your week at a glance.

Every muscle, lit by its sets.

Know which muscles to push and which to rest.

Muscles trained this week Right chest Left chest Right front shoulders Left front shoulders Right side shoulders Left side shoulders Right biceps Left biceps Right triceps Left triceps Right forearm flexors, radial Left forearm flexors, radial Right forearm flexors, ulnar Left forearm flexors, ulnar Right serratus Left serratus Right obliques Left obliques Right quadriceps, rectus Left quadriceps, rectus Right quadriceps, outer Left quadriceps, outer Right quadriceps, inner Left quadriceps, inner Right adductors Left adductors Right hip abductors Left hip abductors Right shins Left shins Right calves Left calves Right upper abs Left upper abs Right middle abs Left middle abs Right lower abs Left lower abs Lower abdominal region Left trapezius Right trapezius Left rear shoulders Right rear shoulders Left side shoulders Right side shoulders Left upper back, scapular Right upper back, scapular Left upper back, teres Right upper back, teres Left lats Right lats Left lower back Right lower back Left triceps, long Right triceps, long Left triceps, lateral Right triceps, lateral Left forearm extensors, radial Right forearm extensors, radial Left forearm extensors, ulnar Right forearm extensors, ulnar Left glutes Right glutes Left hip abductors Right hip abductors Left hamstrings, outer Right hamstrings, outer Left hamstrings, inner Right hamstrings, inner Left adductors Right adductors Left calves, outer Right calves, outer Left calves, inner Right calves, inner Left soleus Right soleus
Biceps
16sets after todayso far 8
Focus
Back
25sets after todayso far 13
Too much

Beat your best and Cumo spots it for you.

Workout summary: new best, bench press 50 lb by 8

Keep the rhythm

Streaks count weeks, not days. Rest days are part of the plan.

0weeks in a row
8/30
9/6
9/13
9/20
9/27
10/4

Your month at a glance

Every workout lands on the calendar, with your streak on top.

History calendar for October, 6 workouts and a 9 week streak

On pace for your goal

Pick a target. Cumo checks every week if you are on track.

Goal: plus 16.5 lb on bench press, on track

Pack your bag. Cumo already knows what is on today.

Download on the App StoreFree for iPhone with iOS 26