Frequently asked questions
What is TempoDisc?
A magnetic disc, about 6–8 cm across, that sticks to any gym machine or bar. A ring of light tells you whether you are lowering the weight on tempo. No app.
How does it attach?
A magnet on the base holds it on steel: a barbell sleeve, a plate, a weight stack, or a machine arm. It works flat, on its side, or upside down.
Do I need an app or a subscription?
No. TempoDisc works on its own. There is nothing to pair and nothing to pay monthly.
How do I use it?
Charge it, slide the switch on, and snap it onto the steel that moves with the weight. Hold the centre button until the light starts circling, then do 2–4 full reps. Two quick green blinks means it is ready. Lift as fast as you like. On the way down, green means you hit the tempo, red means you rushed, and a fade means you went slower than the target.
What do the lights mean?
Green means the lowering phase hit the target. Red means you let it drop too fast. A fade means you were slower than needed — a nudge, not a failed rep. The lift itself is never judged.
How do I set the tempo?
The target is a 3-second lowering phase. To change it, hold the centre button while you switch the disc on, then hold the button for the number of seconds you want.
How long does the battery last?
About five hours of training. Charge it with USB-C. While it charges, the light ring fills up like a battery gauge. A physical switch keeps it from draining in your gym bag, and it switches itself off after a long time without movement.
Who is it for?
Strength and hypertrophy lifters who want to control the eccentric, without buying a €300–450 velocity tracker.
What does it cost?
€59, as a pre-order. Join the waitlist and we will email you when it is ready to ship.
When will it ship?
This is a pre-order / waitlist. We will notify you when TempoDisc is ready. We will not charge you for shipping until we can give you a clear date.
Where do you ship?
We plan to start with the EU. Exact countries and rates will be confirmed before any order is charged. Write to us if you are outside the EU and want to be notified.
How do I get in touch?
Email thomas@troispommeshome.com or use the Contact page.