I train across six disciplines. No app could see me. So I built one.

Kriya every morning. One session. Before anything else.

Lifting five to six days a week. Calisthenics one or two, depending on what the week’s asking for. Walking — a lot, it’s how I think. TM once or twice a week, as a supplement to Kriya. Breathwork on demand — when fear shows up, when anxiety starts climbing the spine before a hard conversation or a hard set. It stops both, immediately. I have my own system for that. Took years to build.

Six modalities, one body, one nervous system. Every one of them feeds the others. The lifting makes the meditation possible. The meditation makes the lifting cleaner. The breathwork catches the adrenaline before it becomes noise.

This is not a “fitness journey.” I don’t have a journey. I have a practice.

Now try to track that stack with Hevy, Strong, or MyFitnessPal.

I used four apps. A lifting tracker that didn’t know I did yoga. A yoga app that didn’t know I lifted. A meditation app that didn’t know I ran. A nutrition app that didn’t know any of it. None of them read my Garmin properly. None of them could see a whole training week.

I’d finish a 90-minute Kriya session and open the lifting app. Six days since last workout. According to that app, I was detraining. According to my body, I was in the strongest, calmest window I’d had in a decade.

The problem wasn’t that any one app was bad. Several of them are good at what they do. The problem was that none of them were built for someone who trains across more than one modality seriously. They all assume you’re a single-discipline user — a lifter, a yogi, a runner, a quantified-self hobbyist — and you have to pick.

I don’t pick. Most Operators I respect don’t pick. The ones still training at 45, 50, 60 are the ones who moved across disciplines, not the ones who specialised until their joints gave out.

So in mid-2025, between a year of travelling through twelve countries and coming home with a different set of questions, I started building.

Solo. Next.js on the web, React Native on mobile, Supabase on the backend. Monorepo. Offline-first, because the gym basement has no signal and neither does the meditation hall. Four thousand two hundred automated tests, because I spent two decades in enterprise technology and I know what happens to software that isn’t tested.

Between phases of the build, I got on a train from Hamburg to Vienna to go to my first Kriya initiation. I’d never done yoga in my life. I was travelling to learn a technique. On that train, between Straubing and Plattling, a man with a hammer started attacking passengers. Most people ran. I didn’t. A 24-year-old who’d already been hit got there the same time I did, and between us we restrained him. I took the hammer out of his hand. A Bundeswehr medic arrived afterwards and worked on the injured. Four hours of police statements. Then I got back on a train and continued to the retreat.

I don’t tell that story for credit. I tell it because it confirmed something I’d been training for my whole life without knowing exactly what the training was for. The point of the discipline isn’t the discipline. The point is to be ready when time calls. You won’t know which day it calls on. You don’t get to pick. The only variable is whether you built the stack.

That’s the thesis underneath Fittssy. Train the body. Train the nervous system. Train the attention. When it matters, you’ll know.

Fittssy is what that thesis looks like as software. Every exercise, every breath protocol, every meditation session logged in one place. Wearable data from Garmin, Oura, Apple Health aggregated into something that reads as a week of training rather than six disconnected feeds. Offline-first. No account required to start — Ghost Protocol — because the Grid shouldn’t be a prerequisite for looking after your body.

The hardest technical problem wasn’t the AI layer or the wearable integration. It was the sync. Making a multi-modal training log work across web, Android, iOS, offline and online, without losing a single set in the reconciliation — that’s the part I’m proud of. It’s the part no user will ever notice, which is how you know it was worth doing.

Everything that tracks is free. Forever. 1,020 exercises. 90 yoga poses. Four breathing protocols. Meditation timer. Nutrition log. Wearable sync. Ten languages. Offline-first.

If all you want is a clean, fast, universal log of everything you train — it’s free. It will stay free. You can use it for the rest of your life and never see a paywall.

£9.99 a month for the part that thinks.

AI program generation — a personalised multi-week protocol based on your goals, your history, your equipment, your recovery state. Recovery Signal — a daily readiness score built from your resting heart rate, sleep, and the last week of training load. Nine-tab analytics. Correlations across modalities that a human coach charging £200 a session would give you if they had the time and the data and the patience.

Nine ninety-nine is deliberate. Less than a coffee per training session. Enough that the thing is sustainable and I can keep building. Not enough that you have to think about it.

If you don’t want it, don’t buy it. The free layer is honestly free. I built this app for myself first. Everything else is a bonus.

Fittssy is now my full-time bet. Fittssy is the thing I built because nothing else saw how I trained, and I am the kind of person who, when a tool doesn’t exist, builds it.

It shipped. It works. I’m Operator #0001 and I’ve been logging every session in it since before it was public.

If you train across more than one modality and you’re tired of pretending you only do one — it’s for you.

If you own a wearable, have hit a plateau, and suspect your body is trying to tell you something that none of your current apps can parse — it’s for you.

If you believe readiness is a discipline and not an accident — it’s for you.

Download it. Start logging. If you want the thinking layer, it’s £9.99 a month. If you just want the Combat Log, it’s free and it always will be.