Privacy Policy

Effective date: July 30, 2026 Last updated: August 18, 2026

This Privacy Policy explains how Andrew Pierce (“we,” “us,” “our”) handles information in connection with the Mike mobile application (“Mike,” the “App”) and the website at coachmike.app (the “Site”). By using Mike, you agree to the practices described here.

Mike does not require you to create an account. Your data lives on your device and in your own Apple iCloud, and is shared with a small number of service providers only as needed to make the coaching work (described below). We do not sell your data, we do not use it for advertising, and we do not track you across other apps or websites.

1. Information we collect

We collect only what the App needs to function as a coach.

Information you provide or generate in the App

Health and fitness data — body weight and weigh-ins, calories and macros, food logs, workouts and training programs, steps, and (with your permission) sleep and heart data.
Apple Health (HealthKit) data — with your permission, Mike reads calories, protein, body weight, steps, workouts, sleep, and heart data, and writes weigh-ins and food you log back to Apple Health. Data obtained from HealthKit is used only to provide the App’s features — including, when the coach checks your readiness, sharing recent sleep and heart-rate readings with our AI provider as described in Section 4 — and is never used for advertising or sold. It is handled in accordance with Apple’s HealthKit requirements.
Photos — progress photos you choose to take (stored in your private iCloud, and optionally saved to your photo library if you ask), and meal photos you take for calorie estimation.
Barcodes — the barcode numbers of products you scan.
Chat content — the messages you send to the in-app coach.

Information collected automatically

Device identifier — a per-installation identifier (Apple’s identifierForVendor, or a locally generated fallback) sent to our server only to enforce per-device rate limits and prevent abuse. It is not linked to your name and is not used to track you.
Log data — our servers may record basic request metadata (timestamps, the device identifier above, and coarse technical data) for security, rate limiting, and reliability.
App analytics — anonymized usage events (for example “a workout was completed” or “the export feature was used”) and crash summaries, so we can see which features matter and fix what breaks. These events never include your health values, food names, chat content, or name, and the analytics identifier is irreversibly hashed. See TelemetryDeck in Section 4.

Purchases

Subscriptions are processed by Apple through the App Store. We do not receive or store your payment card details; we receive only the subscription status needed to unlock features.

On the Site (coachmike.app)

Analytics — the Site uses Plausible, a privacy-friendly analytics service that collects aggregate visit statistics without cookies and without tracking you across sites.
Email list — if you sign up for updates on the Site, your email address is stored with Kit (our email provider) and used only to send you the updates you asked for. Every email includes an unsubscribe link.

2. How we use your information

We use the information above to:

provide and personalize your coaching, plans, nutrition, and progress tracking;
generate the coach’s responses and estimate calories from meal photos (see Section 4);
look up the foods and products you search for or scan;
operate, secure, debug, and improve the App and Site;
enforce fair-use rate limits and prevent abuse; and
comply with law.

We do not use your information for advertising, and we do not sell or rent it.

3. Where your data is stored

On your device and in your own Apple iCloud (Apple’s CloudKit private database, container iCloud.com.andrewpierce.FitnessApp). iCloud data is tied to your Apple ID and governed by Apple’s privacy policy.
Data sent to the service providers in Section 4 is processed on their systems under their terms.

To provide the coaching features, limited data is sent to the following providers. We share only what is needed, and none of them are permitted to use your data for their own advertising.

Provider	What is shared	Why
Anthropic (Claude AI)	Your chat messages, a summary of your fitness context (e.g., weight trend, program, and — if you’ve granted Health access — recent sleep and heart-rate readings when the coach checks your readiness), and meal photos	To generate the coach’s replies and estimate calories from meal photos. Meal photos are processed to estimate calories and are not stored by us. Data sent to Anthropic’s API is processed under Anthropic’s commercial terms and, per Anthropic’s policy, is not used to train its models by default. See Anthropic’s privacy policy.
FatSecret	Food search terms	To look up foods and nutrition information in the food database. See FatSecret’s privacy policy.
Open Food Facts	Barcode numbers you scan; and, if you log a product it doesn’t know by typing in its label, those nutrition facts together with a one-way hashed device identifier	To look up packaged foods by barcode, and to contribute missing nutrition facts back to this public, open database so the next person’s scan works. Contributions are the product’s numbers only — never your name, your logs, or anything about you — but note the database itself is public. See the Open Food Facts privacy policy.
TelemetryDeck	Anonymized usage events (which feature was used, app version, device model, OS version) and crash summaries	Privacy-first analytics so we can see which features are used and catch crashes. Events never contain health values, food names, chat content, or your name; the analytics identifier is irreversibly hashed and TelemetryDeck is built not to collect personal data. See TelemetryDeck’s privacy policy.
Apple	Purchase/subscription info; iCloud sync; HealthKit	Payments, cross-device sync, and Health integration. See Apple’s privacy policy.
Render	Request metadata and the content being relayed to the providers above	We route AI and food-database requests through servers hosted on Render so provider API keys stay off your device, and cache barcode results there so repeat lookups are fast. See Render’s privacy policy.

5. Data retention

On-device and iCloud data persists until you delete it (delete entries in-app, delete the App, or remove its iCloud data), subject to Apple’s iCloud behavior.
Meal photos sent for calorie estimation are processed and discarded; we do not retain them.
Server logs (device identifier, timestamps) are retained for approximately 30 days for security and rate limiting, then deleted.
Cached barcode lookups on our server contain product nutrition data only — nothing about you.
Data processed by the providers in Section 4 is retained according to their own policies.

6. Your choices and rights

Health permissions — you control Apple Health access in iOS Settings → Privacy & Security → Health, and can revoke it at any time.
Photos and camera — you control these permissions in iOS Settings.
Export your data — Settings → Your data → Export gives you everything you’ve logged (weigh-ins, food, workouts, cardio, steps) as CSV files.
Delete your data — Settings → Your data → Erase all data permanently deletes everything on your device and removes your photos from your iCloud. (Deleting individual entries, or deleting the App and its iCloud data, works too.)
Regional rights — depending on where you live (for example, the EEA/UK under GDPR, or California under CCPA/CPRA), you may have rights to access, correct, delete, or port your data, and to object to or restrict certain processing. For data handled by us, the data controller is Andrew Pierce (contact below). To exercise these rights, contact us at andrew@coachmike.app; if you are in the EEA/UK you also have the right to lodge a complaint with your supervisory authority. We do not sell your personal information and do not share it for cross-context behavioral advertising.

7. Children’s privacy

Mike is not directed to children under 13, and we do not knowingly collect personal information from them. If you believe a child has provided us information, contact andrew@coachmike.app and we will delete it.

8. Security

We use reasonable technical and organizational measures to protect your information, including keeping third-party API keys on our servers rather than in the App, and transmitting data over encrypted connections (HTTPS/TLS). No method of transmission or storage is completely secure, and we cannot guarantee absolute security.

9. International data transfers

Your information may be processed in countries other than where you live, including the United States, where our service providers operate. Where required, we rely on appropriate safeguards for such transfers.

10. Changes to this policy

We may update this policy from time to time. Material changes will be reflected by updating the “Last updated” date above and, where appropriate, by notice in the App. Your continued use after an update means you accept the revised policy.

11. Contact us

Questions about this policy or your data: Andrew Pierce Email: andrew@coachmike.app Or visit coachmike.app/support.