About Sterka

Why it exists

A good strength coach does four things: programs your training, adjusts it to your life, reads whether it's working, and keeps you going. That is worth paying for — which is why a human coach runs €150 to €200 a month, often with a waitlist, and stays out of reach for most people who train seriously.

Everything cheaper stops short of coaching. A tracker logs what you already decided. A generator hands you a session and forgets you the moment it ends. So you become the translator between your life and your training — turning "I played tennis yesterday and my shoulder's cranky" into "lighten the pulls, drop the overhead press" by hand, week after week.

Sterka closes that gap. A deterministic engine programs each session from your goal, your history, and your recovery; a coach explains it in plain language. The engine is the point — it means the coaching is grounded, not guessed. If Sterka can't show the arithmetic behind a number, it doesn't give you the number.

What it refuses to be

Half of coaching is what a good coach won't do. Sterka has no streaks, badges, or confetti; no feed and no followers; no supplement upsells, meal plans, or medical advice; and no black box — every load traces back to arithmetic, one tap deep. It is a strength-training tool, and it reads your life only to change your training, never to become an everything-app.

Who's building it

I'm Peyman. I build Sterka in Amsterdam, and I train on it — every session, on my own data, before anyone else does. The bar tells the truth quickly, so the fastest way to know whether the coaching is any good is to follow it myself.

It exists because I was tired of being the glue: running a generator for the plan and a chatbot for the context, then hand-translating between the two every time life moved. I wanted one system where that adjustment is automatic and the reasoning is visible. That is the whole product.

It is early. I'm the only one training on it yet; the first invites go to the waitlist when it launches, and what that first group tells me will shape what ships next.

The name

Sterka — from the Swedish stärka: to strengthen. The final A is four plates: the word ends where the strength is.