ON THE WATER
Feedback as you row
Follow bend, moment or handle force alongside oar speed as you row. Choose the curves and numbers that help you connect the catch, drive and release.
Explore the iOS app →Get to know your stroke.
Watch the stroke and its curves together. Use full screen for a closer look.
See how you load the oar, carry the drive and release the blade.
Record oar motion and loading, see live feedback on your iPhone, and review each stroke alongside GPS and boat movement after your row.
AFTER YOUR ROW
Review the whole workout
Compare strokes, pieces and group averages. See the GPS route, boat motion and stroke replay together when those recordings are available.
Explore cloud analysis →GET SET UP
Set up your oar
Assemble the kit, select your saved oar and connect its sensors. Guided alignment and a stiffness calibration keep the measurements tied to your setup.
Assemble your kit →START WITH YOUR PHONE
Choose your phone.
iOS · ritmoForceCurve
Connect your saved oar, complete the guided alignment, and record the workout with live curves and metrics. Use two sensors per oar; connect four to record two oars.
iOS setup & recordingAndroid · WitMotion
Record your oar sensors in WitMotion. Add a separate Sensor Logger recording when you want phone motion and GPS in the report.
Android setup & recordingBoth recording paths use the same Cloud Analysis and interactive report. See pricing for available products and plans.
FROM THE OAR TO THE BOAT
Explore a recorded workout.
Open the example to explore oar curves, GPS and boat motion from one recorded workout. Follow individual strokes or compare averages, then use the boat-and-oar replay to see the movement.
Choose metrics by subject: Oar, Boat, GPS, Time and Body. Save your plot and replay setup to reuse on another workout. Boat movement needs a securely mounted phone; blade depth and water-contact trails depend on the recorded setup and supplied geometry.
MEASURE THE OAR YOU HOLD
Measure bend and motion on the oar.
Two sensors measure how the oar bends and moves. With the correct stiffness calibration and dimensions, the app uses that bend to calculate moment, force, work and power.
The motion measurement follows the shaft through the catch, drive and release. Sweep angle, blade rotation and loading describe different parts of the stroke; the metric guide explains each one.
How the measurements work →