About
Hi, I'm Jo. I built Heza.
A real human, in Spain.
Heza started as a small personal project to keep track of my own training and food. I never advertised it or expected anyone else to find it. Then people started signing up.
By day I'm a brand strategist. I also work in the venture arm of a company, where I help startups with branding and technology. Heza isn't my job. I build it because it matters to me.
I'm also a hobbyist photographer. If you'd like to see what I point a camera at when I'm not lifting or running, it's at jokassis.com.
A few things about me
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I'm a lousy coach for myself.
Left alone I'm unsure, I change my mind every week, and I forget what I lifted on Monday. So I built one brain that sees everything I do and remembers it for me.
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I wanted it all at once.
Lose weight, lift more, run better. Obviously all at the same time. That meant food, workouts and runs in one place, not in three apps that never talk to each other.
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I hate typing between sets.
I say “bench, three sets of eight at 80” and it's logged. No sweaty thumbs, no tidying up afterwards.
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I already pay for an AI.
I wasn't going to pay for another one just to read my training. So Heza works with the one you already have.
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I like being coached. At my own pace.
Nudges, not nagging. Some weeks are big. Some weeks are a walk to the bakery.
What Heza believes
The Heza philosophy, in fullKeeping Heza free
I want Heza to stay free. Today it runs on a single server in Germany, and the bill comes out of my own pocket. I'm glad to pay it: it's cheaper than a personal trainer, and it never cancels on me.
To keep Heza going as it grows, I may partner with sports clubs or brands that fit what it's for. If that happens, I'll say so on this page, and any post that involves a partner will say so at the top. Partners won't get your data. What you log stays between you and your AI.
How the blog is written
- I write every post. I use AI to check facts and tidy drafts, and I read and check every line before it goes up.
- I build Heza, so keep that in mind when a post talks about Heza or other apps. Nobody pays for posts, and there are no ads or affiliate links. If that ever changes, the post will say so at the top.
- Outside facts come with their sources, listed at the end of each post.
- Health information is general, not medical advice. Heza's numbers are estimates.
- If you spot a mistake, write to team@heza.app. I fix it and show the date it was updated.
Say hello
Email team@heza.app. How Heza handles your data is in the privacy policy.