Notch
Your movements reconstructed on your smartphone in 3D
Notch launched on January 3, 2017 with 102 votes, #422 of 3,671 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 9 years on.
What it does
Notch Strength lab uses wearable sensors to track your exercise form on a per-rep basis, provides real-time feedback and pushes you train to your full potential.
Using velocity-based training and biomechanical analysis Notch recommends the right weights, so you can advance without setbacks, and suggests targeted exercises to address your weak spots. Track your training journey from every angle - access detailed, rep-by-rep 3D recordings, form assessments, RPE ratings, rest intervals, time-under-tension data, and high-level views of workout-to-workout, week-to-week, and training block improvements. Notch sensors monitor 150+ motion parameters, revealing hidden insights about your movement, technique, and performance. See what coaches cannot, and optimize every rep. Notch empowers your workouts with $400/hour worth of sports study lab insights. By…from wearnotch.com
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