RationalTrack
Published 28 September 2026.
Only what you enter. There is no hidden collection and no inference from your behaviour.
| Category | Specifically |
|---|---|
| Account | Name, email address, password (hashed, never stored readably), timezone, language, and your unit preference |
| Body measurements | Weight, body-fat percentage, resting heart rate, and waist, chest, hip, arm, thigh and neck measurements |
| Food | Meals, foods, quantities and the calories and macros you record |
| Exercise | Workouts, exercises, sets, reps and weights lifted |
| Sleep and wellbeing | Hours slept, sleep quality, and your mood, emotional state and energy ratings |
| Goals and habits | Goals, targets, habits, streaks and challenge reports |
| Things you write | Reality-check narratives, choice-moment descriptions, notes on any entry, and your messages to the support assistant. This is the most personal content in the app and we treat it that way. |
| Billing | If you subscribe or buy credits: your subscription status and payment records. We never see or store your card number — Stripe handles that. |
| Technical | Session records including IP address and browser, kept so you can see where your account is signed in |
These are service providers doing work on our behalf. They are contractually limited to that work. None of them is permitted to use your data for their own purposes, and none of them pays us or is paid by us for data.
| Provider | What it receives | Why |
|---|---|---|
| OpenAI | The text you write, and nothing that identifies you. Personal details are stripped before anything is sent — no name, no email address, no account identifier. What goes is the content itself: your reality-check narrative, your planning request, or the routine being narrated. Anything you write in an AI feature is sent to OpenAI and becomes subject to their terms. If you would rather a thought never left the app, do not put it in an AI activity — the manual activities send nothing anywhere. | To parse a reality check, build a plan, or generate narration. These features only run when you start them, so nothing is sent in the background. What OpenAI does with it: text sent through their API is not used to train their models. They retain it for a short period — around 30 days — to monitor for abuse, then delete it. It is not used for any other purpose and it is not shared onward. |
| Stripe | Your email and payment details, entered on Stripe's own form | To take payment. Card numbers never reach our servers. |
| Mailgun | Your email address and the contents of emails we send you | To deliver check-in emails, reminders and account mail. |
| Google, Facebook, Apple | Only your sign-in identity, and only if you choose to sign in with one of them | To let you sign in without another password. If you do not use them, they receive nothing. |
That is the complete list. No analytics provider, no advertising network, no data broker, no "partners".
RationalTrack is for people aged 16 and over. We do not knowingly collect information from anyone younger. If you believe a child has created an account, email marco@fractionl.com and it will be removed.
RationalTrack is operated by Fractionl, a Canadian company, and follows PIPEDA. If you are in the EU or UK, GDPR rights — access, correction, erasure, portability and objection — are honoured for everyone rather than only where legally required.
We do not claim HIPAA compliance. HIPAA governs healthcare providers and insurers; RationalTrack is neither, and claiming a standard we are not bound by would be misleading. What we do instead is written above.
For any privacy request — access, correction, deletion, or a question about this policy — email marco@fractionl.com. Requests are answered within 30 days.
If this policy changes in a way that affects how your data is handled, we will tell you in the app before it takes effect — not by quietly editing this page.
See also the Terms of Service. Questions about either: get in touch.