My Run Book is an iPhone app for runners, built by Brett Blakeley, a solo developer. This policy explains what the app reads, what it stores, and the few things that ever leave your phone.
There is no account, no password, and no profile. Nothing here is sold, and no advertising company receives anything.
What My Run Book reads from Apple Health
With your permission, My Run Book reads:
- Running workouts, including distance, duration, and pace
- Heart rate recorded during those workouts
- Your date of birth and biological sex, if you allow them, used only to estimate your heart rate zones
My Run Book never writes anything back to Apple Health, and does not read your location, GPS routes, medical records, nutrition data, or any workout type other than running.
You can withdraw Health access at any time in the iOS Settings app, under Privacy and Security, Health, My Run Book.
What My Run Book stores, and where
Your goals, preferences, notes and journal entries, run classifications, and pinned analysis cards are stored on your device only. Your run data itself stays in Apple Health.
No server keeps a copy of your training history. That is a statement about storage, not about processing: when you use an AI feature, part of your training data is sent off the device to be processed, and the next section describes exactly what and to whom.
Deleting the app removes everything My Run Book stored on your phone. It does not affect your Apple Health data, which belongs to Apple Health, and it does not immediately clear the usage counters described below, which expire on their own.
What leaves your phone
AI features
When you ask an analysis question, generate a training plan, have a goal conversation, or set a monthly goal, My Run Book sends an AI model what that feature needs. That is a de-identified summary of your training, which can include distances, paces, durations, dates, heart rate summaries, and your goal, together with anything you typed for it: your question, your messages in the goal conversation, and the note you wrote when you set up the app. It does not include your name, your email address, your location, or any route.
Notes and journal entries are included only if you turn that on in Settings. It is off unless you switch it on. Notes are your own writing and can contain anything you put in them, including names and details about your health, so treat that toggle as the decision it is.
These requests go through a proxy server operated by Brett Blakeley on Cloudflare Workers, which forwards each one to an AI provider to produce your answer. The proxy does not keep the contents of your request or the answer.
My Run Book uses AI models from three providers: OpenAI, Anthropic, and Google. Which one answers a given request depends on the feature and changes as better models become available, and if one provider is unavailable, the request can go to another of the three. If that list of providers ever grows, this page changes first.
My Run Book uses these providers only under terms that protect your data at least as well as this policy does. None of them may use your requests to train or improve its models, and each keeps a request and its answer only for a limited period, to detect and prevent abuse, before deleting them. Not training on your data and not retaining it at all are different promises, and only the first one is being made here.
Cloudflare and the AI providers also keep ordinary server logs, which can include your IP address and the time of the request.
Abuse prevention
To stop the AI features being used by software that is not My Run Book, the app asks Apple's DeviceCheck service for a token proving the request comes from a real Apple device. The proxy validates that token with Apple. It identifies a device, not a person, and it is not linked to your Apple Account or to anything you run.
The proxy keeps per device usage counters so it can apply the free and Premium limits. Those counters record how many times each feature was used and how much model capacity it took, and nothing about the content. They expire automatically after about 70 days.
Product analytics, in your control
If the analytics toggle in Settings, Privacy is on, My Run Book counts anonymous events through TelemetryDeck: which screens are used, where onboarding loses people, whether a trial converts. Events are tied to a random identifier created on your device, and reinstalling the app creates a new one. No run, distance, pace, heart rate, goal, note, or journal entry is ever included in an analytics event. You can turn this off at any time in Settings, Privacy.
That is the complete list
There are no ads and no ad SDKs. My Run Book does not read the advertising identifier, does not track you across other apps or websites, and includes no advertising or marketing analytics of any kind. No crash reporter transmits data.
Purchases
Premium subscriptions are sold through Apple's App Store. Apple handles the payment and the subscription record. My Run Book never sees your payment details, your name, or your Apple Account, and receives no personal information from Apple about you.
Health data and third parties
My Run Book does not use data obtained from Apple Health for advertising, marketing, or data mining, and does not share it with third parties except as described in "What leaves your phone" above, which happens only in response to something you ask the app to do.
This website
This site has no analytics, no cookies, no tracking pixels, and no third-party requests of any kind. The typefaces are served from the same place as the pages themselves, so opening one of these pages tells nobody but the server it came from.
Children
My Run Book is not directed at children under 13 and does not knowingly collect information from them.
Your choices
- Stop Health access: iOS Settings, Privacy and Security, Health, My Run Book
- Stop sending notes to AI features: Settings, Privacy inside the app
- Stop analytics: Settings, Privacy inside the app
- Remove everything on your phone: delete the app
There is no account here, so there is no profile to look up and no way to connect a request to you by name. Two things do exist away from your phone: a device level usage counter on the proxy, which expires on its own after about 70 days, and an analytics identifier, which exists only while you have analytics switched on.
Depending on where you live, those identifiers and the contents of an AI request may still count as personal data. If you are in the EU, the UK, or California and want to exercise a right over them, or you simply want to know more than this page says, write to myrunbookapp@gmail.com. Tell us what you need and you will get a straight answer.
Changes
If this policy changes, the date at the top changes and the previous version is replaced here. Material changes will also be noted in the app's release notes.