HybridEngine
Getting your week ready…
HybridEngine
Getting your week ready…
Legal document
Last updated: September 24, 2026
The controller of your personal data is HybridEngine, operated as a sole proprietorship from Puerto Rico, United States. You can contact us at support@hybridengine.app.
Your email (if you sign in), the name or nickname you tell us (optional, just to greet you), your onboarding answers, your sets, weights, reps and sessions, your streak and level, your settings (unit, goal, equipment, training days), the date you last opened the app and on how many different days you have used it, your answers to the satisfaction survey (1 to 5 and the date), the messages you write to us from Help, and, if you upload one, your profile photo. If you turn on alerts, we keep the technical address your browser gives us to send them (you can turn them off any time in your Profile). If you sign in with Google, we receive your email and photo from that account. When you pay, Stripe (our payment processor) stores your payment method details; we only see your subscription status, never your card number. We do not ask for your location, contacts, or health data beyond what you type yourself.
Only to provide the service: building and adjusting your plan, suggesting weights, showing your progress, syncing it across your devices, and billing your subscription if you have one. If you turn on GPS while running, your location is used only on your phone, while you run, to measure distance; we do not store it or send it to our servers. We do not sell your data. We only measure our own ads with the Meta Pixel (see "Advertising and measurement").
With the providers that run the app, each only for its function: Supabase (database, sign-in and photo storage), Vercel (hosting), Cloudflare (hosting for the exercise videos), Resend (sending your access codes by email), Stripe (billing your subscription), Meta (measuring our ads, see "Advertising and measurement") and Google (optional sign-in and fonts). We do not use artificial intelligence to generate your plan: the training engine is our own math formula, so your data is never sent to an AI provider.
Some of these providers (Supabase, Vercel, Cloudflare, Resend, Stripe, Google) process data on servers outside your country, mainly in the United States. Each one handles your data under its own security and privacy terms; we only share with them what is necessary for the app to work.
For as long as you have an account. If you delete it, we remove your account, photo, sets and settings from our servers; if you had an active subscription, we cancel it before deleting your data.
You can access, correct or delete your data whenever you want. To delete it yourself: Profile → "Delete my account and data". To request a copy or exercise any other right (access, rectification, objection or portability), write to us at support@hybridengine.app and we will respond within a reasonable time.
To learn which ads brought you to HybridEngine we use the Meta Pixel (Facebook and Instagram) and its Conversions API. On our sales page, in the welcome flow and on the plans screen, and when you start your trial or pay, Meta receives a notice of that step, data from your browser and, in hashed form, your email. We do not send your answers, your workouts or your health data, and it is not loaded while you train inside the app. You can limit it with your browser privacy settings or your Facebook or Instagram ad settings. We also count, anonymously, how many people move through those pages and which ad they came from (a random code stored in your browser, with no IP or email); if your browser has “Do Not Track” on, you are not counted.
We use essential cookies to keep you signed in; without them you could not access your account. On the sales pages, the Meta Pixel may also store advertising measurement cookies (_fbp and _fbc) to know which ad brought you. Those cookies are not used inside the app while you train.
Your data travels encrypted and each person can only read their own. No system is infallible: if we detect an incident that affects you, we will tell you.
HybridEngine is not directed at anyone under 18.
If we make a significant change to this policy, we will notify you by email in addition to publishing the new version here with its date.
Questions about this policy? Write to us at support@hybridengine.app.