Powerlifting is built on precision. The programming is calculated, percentages are intentional, and rest periods matter. So why are its tools stuck in the notebook/spreadsheet era?
Tensio was built for lifters who take their training seriously, and that starts with powerlifters
RPE:
Right now, RPE is an estimate. Advanced powerlifters are better at it, but even they are still estimating.
Tensio will start by letting lifters log RPE manually after each set, the same way they already do. The difference is that while it is being logged, the bands are collecting data: bar speed, tempo breakdown, and the fatigue curve across the set. Over time, Tensio will learn what RPE 8 actually looks like versus RPE 9.
The goal: create the first automated RPE tracker - based on real performance data, not feel.
Manual inputs train the system. The system gets smarter. Data becomes automated. While the system will be trained by many users, it will also tailor itself to each individual user. What this means: the more you use Tensio, the more personalized it becomes to your exact lifting habits, quirks, and metrics.
See your explosiveness:
Concentric speed is one of the most telling metrics in powerlifting - and one of the hardest to track without video. Tensio measures it automatically. Every rep, every set.
More importantly, you can compare your metrics directly to previous sessions. Did your speed off the chest on bench improve at the same weight? Did your deadlift single improve from last week? These are questions that used to be answered with feel. Now they can be answered with data.
Additionally, since Tensio is a dual-wrist wearable, it can track your explosiveness through each arm. Why is this useful? It means it can track asymmetries. Is your left arm lagging behind your right on bench? Tensio can tell you that - and exactly by how much. Prevent injuries before they happen and improve your overall biomechanics through detailed asymmetry detection.
Enter your program once. Train forever.
Most powerlifters run structured programs. Tensio lets you enter your full program into the app once. From there, the bands take you through it. No scrolling through a spreadsheet mid-session. You put the bands on, start the workout, and lift. The program runs itself.
Rest periods and pause tracking:
Tensio tracks more than just your movement. It tracks your rest periods between sets. You can preset rest times in the app, or simply view how long you rested. Rest periods directly affect performance on the next set, and most powerlifters have no actual data on how they should be resting. Usually, it is just a vague sense of "long enough," or whatever their coach/program calls for.
Tensio not only logs your rest times, but it will then be able to provide you direct feedback on how your rest periods affect the performance of each set. Does 4 minutes of rest lead to better bench performance than 3 minutes? What rest time is optimal for you between deadlift sets? Tensio will be able to answer these questions.
Tensio also tracks the length of the pause period on paused reps. Ensure you are getting enough pause for competition bench, or just see how long your paused period is compared to last time. Whatever is useful for your specific programming.
The long game: Tensio learns what works for you.
Once Tensio has enough data on your training, it can start personalizing everything to fit exactly to you, the individual lifter that you are. Your RPE, your fatigue curves, your rep speeds, your optimal rest periods - Tensio will be able to tell you what makes you perform your best. And it will only get better the more you use it.
That's the vision: a system that doesn't just track your training, but understands it.