Privacy Policy

Effective date: July 22, 2026

Coach Carl is a service of Singhcredible LLC, a Massachusetts limited liability company. This policy explains what we collect, why we collect it, who else touches it, and what control you have. If anything here is unclear, write to jeremy@singhcredible.com and ask.

What we collect

What you tell Carl

Coach Carl is a conversation, and the conversation is the product. What you send Carl is stored so that he can coach you with continuity instead of starting fresh every day. That includes your goals, your race plans, how sessions felt, your training history, and anything you choose to tell him about injuries, pain, soreness, sleep, stress, or how your body is responding.

You decide what to share. If you would rather not tell Carl something, do not tell him. He will coach you with what he has.

Activity data from services you connect

If you connect Strava or Garmin, we access and store the activity data you authorize: activity type, date and time, duration, distance, pace, heart rate, elevation, and where available the title and description you wrote on the activity.

We access this only through those services' official APIs. We never ask for or store your login credentials for them, and we do not write data back to them.

Account and messaging information

Your name, your email address, and the identifier for whichever channel you use to reach Carl. That means your Telegram chat ID, or your mobile number if you use SMS or WhatsApp.

Billing information

Stripe processes payments and holds your card details. We do not store your full card number. We keep your subscription status, your billing history, and the card's last four digits as reported to us by Stripe.

Technical information

Standard server logs, including IP address, timestamps, and error traces, kept for security and debugging.

How we use it

To coach you. Carl uses your history and what you tell him to propose and adjust your training.
To generate your weekly recap and other reports.
To send you the messages you have asked for on the channels you have chosen.
To operate your subscription and billing.
To diagnose problems, keep the service secure, and improve it.

We do not sell your personal information. We do not use it for advertising. We do not share it with third parties for their own marketing.

Processing by artificial intelligence

Carl's coaching is generated by AI. This is how the service works, not an optional feature you can switch off and keep using Coach Carl.

To produce Carl's replies, your training plan, and your reports, we send the relevant parts of your information to third-party AI providers. We currently use Anthropic and OpenAI.

Under our agreements with these providers, your information is used to generate a response for you and is not used to train their models.
Each request is processed for you individually. We do not pool your information with other users' information for analysis.
Because AI processing is inseparable from the service, you cannot use Coach Carl without your information being handled this way. If you are not comfortable with that, the honest answer is that this is not the right product for you.

Health-related information

Training data, injuries, pain, and how your body feels are personal, and we treat that information carefully. Two things you should be clear about.

We are not a healthcare provider, and Coach Carl is not covered by HIPAA. What you tell Carl is not protected health information under that law.

Please do not send Carl medical records, diagnostic imaging, or anything you would not want stored on a commercial cloud service. Describe how you feel in your own words instead. That is what Carl coaches on.

Who else handles your information

We use a small set of service providers, each handling only what it needs in order to do its job.

Cloudflare. Hosting, compute, and database.
Anthropic and OpenAI. AI processing that generates Carl's coaching and reports.
Stripe. Payment processing and card storage.
Telegram. Delivery of messages on Telegram.
Twilio. Delivery of SMS and WhatsApp messages.
Meta Platforms. The WhatsApp Business Platform, if you use WhatsApp.
Strava and Garmin. Activity data, only if you connect them.
Kit, formerly ConvertKit. Email delivery.

We may also disclose information if we are legally required to, or to protect the rights and safety of our users or ourselves.

How we communicate with you

Email

Email is on by default when you create an account. We send a welcome email, weekly training reports, and account notices such as billing confirmations and security alerts. You can turn off weekly reports by asking Carl or by replying to any email. Billing and security notices cannot be turned off while your account is active.

We do not share your email address with third parties for marketing.

You opt in by connecting your Telegram account to the Coach Carl bot using the link or code we provide. Expect roughly 3 to 6 messages per week depending on your training, and up to one per day if you enable the optional daily brief. Messages include check-ins after activities, weekly recaps, plan proposals, and account notices.

Stop them at any time by sending /stop to the bot or by asking Carl to stop. Telegram messages go over the internet, so there are no carrier charges, though your provider's data rates may apply. Your use of Telegram is subject to Telegram's own privacy policy.

We do not share your Telegram chat ID with third parties for marketing.

SMS

SMS is optional. You opt in by giving us your mobile number and giving explicit consent. Expect roughly 3 to 6 messages per week depending on your training, and up to one per day if you enable the optional daily brief. Messages include check-ins after activities, weekly recaps, plan proposals, and account notices, and may contain links.

Opt out at any time by replying STOP to any message, or by asking Carl to stop texting you. Reply HELP for help, or write to jeremy@singhcredible.com. Message and data rates may apply.

We do not share your mobile number or your SMS consent status with third parties for marketing. Your number is used only to deliver the Coach Carl messages you asked for. We use Twilio to deliver SMS, so your number and message content pass through Twilio's platform, governed by Twilio's privacy policy.

WhatsApp is optional and works the same way as SMS. You opt in by giving us your WhatsApp number and giving explicit consent, and you can opt out at any time by replying STOP or by asking Carl to stop.

WhatsApp messages are delivered through Meta's WhatsApp Business Platform using Twilio. Your use of WhatsApp is subject to WhatsApp's own privacy policy. There are no carrier charges, though your provider's data rates may apply.

We do not share your WhatsApp number with third parties for marketing.

How long we keep it

We keep your information while your account is active, because continuity is what makes the coaching work.

Disconnecting Strava or Garmin stops new activities from arriving but does not delete activities already imported. If a connected service tells us you deleted an activity there, we remove it within 48 hours where that service supports the notification.

When you delete your account we delete your training data, your conversation history, and your connected-service data. Some records are kept longer where we are legally required to keep them, in particular billing and tax records, and backups age out on their normal cycle.

Your choices and rights

You can connect or disconnect a fitness service at any time, choose which channels Carl uses to reach you, turn off any optional message type, ask us for a copy of your data, ask us to correct it, and delete your account and the data with it.

Depending on where you live you may have additional rights under laws such as the GDPR or the CCPA, including rights of access, correction, deletion, and portability. To exercise any of these, write to jeremy@singhcredible.com. We will not treat you differently for asking.

Security

We use administrative, technical, and organizational safeguards designed to protect your information, including encryption in transit and access controls on our systems. No system is perfectly secure, and you use the service at your own risk.

Children

Coach Carl is for adults aged 18 and over. We do not knowingly collect personal information from anyone under 18. If you believe a minor has given us information, write to jeremy@singhcredible.com and we will delete it.

Changes to this policy

We may update this policy. Updates are posted on this page with a new effective date, and we will tell you by email if a change is significant.

Contact

Questions about this policy, or about your data, go to jeremy@singhcredible.com.

Coach Carl is a service of Singhcredible LLC, Massachusetts, United States.