Your dream physique is built on muscle failure, and you won't get it without us.

Automatic exercise detection, rep counting, and failure tracking — powered entirely by the motion of your Apple Watch.

Download on the App Store

Last · Wed 2:14p

Push day

4 exercises · 11 sets

82

Near failure

Avg · last session

Start workout

Reading motion

Rep velocity ·
heart rate

Auto-detected

Bench
press

Set 2 of 3

Bench · Set 2

8

Reps

148

BPM

−18%

VEL

Set 2 · Bench

0 %

True muscle failure

Muscle failure,
measured from your wrist.

Scroll

01Walk in

Walk in.

Leave your phone in the locker. Riven runs entirely on your wrist — no setup, no straps, nothing to forget.

02Lift

Lift.

Riven sees your set start — reading motion, heart, and rhythm a hundred times a second from your wrist.

03Bench press

Riven recognizes the movement.

It's bench. No taps, no menus. The watch face just knows — and starts logging.

04Reps, counted

1. 2. 3.

Every rep, on your wrist. Velocity and heart rate logged for every one — silently, without a single tap.

05The moment

87

True failure.
Now you know whether you finished the exercise — or whether next set, you go harder.

06Repeat

Rest. Next set.
Repeat.

Riven handles every set, every exercise, every workout. You never touch a thing.

9:41

Friday · push day

Ready

Reading motion

Rep velocity · HR

Detected

Bench
press

Set 1

Bench press · Set 1

0

108

BPM

−2%

Velocity

Failure score

0

True failure

38%

v-loss

172

HR

12

Reps

Rest

1:30

Next: Set 2

The science

Most lifters stop 4 reps too early.

The fibers that grow only fire in the last few reps before failure. Riven is built to find them — and to tell you, every set, whether you got there.

Where most people stop

RPE 7 · "felt hard enough"

True failure

The next rep can't happen

The hardware

No straps.
No clips. No cameras.
Just the Apple Watch you already own.

Chest strap

Camera

Barbell clip

EMG patch

Riven

Find your failure.

Download on the App Store