Privacy policy

This policy explains what Chalk Fitness (“Chalk”, “we”, “us”) collects when you use the Chalk app, the website at trychalk.app, and the waitlist, and what we do with it. Chalk is a fitness product. Much of what you give it is about your body and your health, so we keep this plain.

What we collect

Account details. Your email address, name, username, and a password, or the identifier your Apple or Google account provides if you sign in that way. Your phone number if you verify it.

Profile. Anything you add to your public profile: a photo, a bio, links, and the stats you choose to make public.

Training data. Workouts, exercises, sets, weights, reps, saved workout templates, and workout history.

Nutrition data. Foods you log, serving sizes, meals, macros, calorie targets, and the estimates Chalk makes from that data.

Body data. Weight, body measurements, and progress photos you choose to record.

Apple Health data. If you connect Apple Health, Chalk reads the categories you approve, such as workouts, steps, and weight, to fill in your log. We never use Apple Health data for advertising, never sell it, and never share it with anyone other than a coach you have connected with, and only when you choose to share it.

Coaching data. If you work with a coach on Chalk, the assignments they send, the check-ins you submit, and the messages between you.

Social content. Posts, stories, comments, likes, follows, and workouts you share.

Payment information. Subscriptions are billed through Apple. Payments to a coach are processed by Stripe. Chalk never sees or stores your full card number.

Device and usage data. Device type and identifiers, push notification tokens, app version, crash and error reports, and product analytics events such as which screens you visit and which features you use.

Waitlist. If you join the waitlist, your email address, whether you train or coach, and the campaign or page that brought you to us.

How we use it

• To run the product: log your training, show your history, estimate your daily energy needs, deliver coaching, and sync across your devices.
• To keep your account secure and to prevent abuse.
• To send transactional email, such as a verification code, a password reset, a receipt, or a waitlist invite.
• To understand how Chalk is used so we can improve it.
• To respond when you contact support.

We do not sell your personal information, and we do not use your health, training, nutrition, or body data for advertising.

Health data is treated as sensitive

Your training, nutrition, body measurements, progress photos, and Apple Health data are used only to provide the service to you and to the coach you choose to work with. Metabolic and energy estimates are calculations based on the data you log. They are not medical advice.

Who we share it with

Your coach. When you connect with a coach on Chalk, they can see your training, nutrition, check-ins, messages, and the body data you share with them. Ending the coaching relationship stops future sharing.

Other users. Your public profile and anything you post publicly can be seen by other people on Chalk. You control what is public.

Service providers. Companies that help us run Chalk process data on our behalf and under contract: hosting (Railway), file storage (Cloudflare), transactional email (Resend), analytics (Mixpanel), subscription management (RevenueCat and Apple), coach payments (Stripe), and link handling for invites (Detour). If you use a feature that drafts content with AI, the content you submit to that feature is sent to our AI provider to generate the response.

Legal. We may disclose information if required by law, to protect the rights and safety of Chalk and its users, or as part of a merger or acquisition. We would tell you before your data became subject to a different privacy policy.

How long we keep it

We keep your data for as long as you have an account. You can delete your account from Settings in the app, which removes your profile, training, nutrition, and body data from our systems within 30 days, except where we must keep a record for legal, security, or accounting reasons. Waitlist entries are kept until you ask to be removed or until we no longer need them.

Your choices

• Edit your profile and privacy settings in the app.
• Disconnect Apple Health at any time from the Health app on your iPhone.
• Turn push notifications off in your device settings.
• Request a copy of your data, a correction, or deletion by emailing support@trychalk.app. If you live somewhere that gives you additional privacy rights, such as California or the European Economic Area, you can exercise them through the same address.

Security

Data travels over encrypted connections and is stored with providers that encrypt it at rest. Access inside Chalk is limited to the people who need it to operate the product. No system is perfectly secure, so please use a strong, unique password.

Age

Chalk is for adults. You must be at least 18 to create an account or join the waitlist. If we learn that someone under 18 has given us personal information, we delete it.

Where data is processed

Chalk is operated from the United States and your data is processed there. If you use Chalk from elsewhere, you are sending your data to the United States.

Changes

If this policy changes in a way that matters, we will tell you in the app or by email before the change takes effect. The date at the top shows the current version.

Contact

Questions about privacy go to support@trychalk.app.