I built something I wanted for my own training and I’m curious what other lifters think of the idea.

It’s a pair of small wearable sensors I built to track lifting movements. The hardware is working, the app is working, and the movement algorithm is working. I’m still training and refining automatic rep counting across a larger number of exercises because different lifts and different lifters create very different movement patterns.

The app records your workouts and history, lets you build your own routines, and uses the sensor data to analyze each set. The goal was to capture information I couldn’t get from simply logging weight and reps — what actually happened during the movement.

I didn’t build this because I was looking for something to sell. I built it because it was something I wanted and couldn’t find for a normal lifter without getting into expensive specialized equipment.

Now that it actually works, I’m interested in what other lifters would want from the data.

If you could put two small sensors on your wrists or the equipment and get an analysis after every set, what would you actually want to know?

Rep speed? Range of motion? Changes in your movement as you fatigue? Left/right differences? Set consistency? Something I haven't thought of?

I’m especially interested in what experienced lifters would consider genuinely useful versus data you’d look at twice and never care about again.

What do you guys think about training with real data versus feel