Privacy Policy

Last updated: June 2026

Introduction

This Privacy Policy describes how Starting Strength App ("we", "us", or "our") collects, uses, and shares information about you when you use our mobile application (the "App").

Information We Collect

Information You Provide

We collect information you provide directly to us, such as:

  • Account information (email address, if you create an account)
  • Workout data (exercises, weights, sets, reps)
  • Body weight measurements (if you choose to track)
  • Settings and preferences

Automatically Collected Information

When you use our App, we automatically collect certain information, including:

  • Device information (device type, operating system)
  • Usage data (features used, crash reports)
  • Analytics data to improve the App

How We Use Your Information

We use the information we collect to:

  • Provide and maintain the App
  • Calculate your workout weights and progression
  • Sync your data across devices (if you enable cloud backup)
  • Improve and develop new features
  • Send you technical notices and support messages
  • Respond to your comments and questions

Data Storage and Security

Your workout data is stored locally on your device by default. If you enable cloud backup, your data is securely stored using industry-standard encryption. We use Supabase for cloud storage, which provides enterprise-grade security.

Third-Party Services

We use the following third-party services:

  • RevenueCat - For managing subscriptions
  • Supabase - For cloud backup and authentication
  • BugSnag - For crash reporting and error tracking
  • Expo - For app updates and analytics
  • Google Analytics - For website traffic and campaign measurement
  • Anthropic - For optional AI Coach features (see "Third-Party AI Processing" below)

Third-Party AI Processing (AI Coach)

Starting Strength includes optional AI Coach features powered by Anthropic Claude. When you use AI Coach, we send Anthropic the text you enter and the training context needed to answer your request. This context may include profile information such as sex, age, bodyweight, training experience, and units, plus workout-log information such as recent sessions, exercises, weights, sets, reps, failed reps, workout notes, and planned upcoming workouts.

Workout Coach Notes use the same AI provider. When enabled, they may send recent completed workouts, your planned workout, days since your last workout, set outcomes, and workout notes so the app can generate a short pre- or post-workout note.

We do not intentionally send your name, email address, or device ID to Anthropic for AI Coach requests. We store AI Coach analytics and safety events in our systems so we can monitor reliability, rate limits, cost, abuse, and feature quality. These analytics are designed not to include full conversation text.

Anthropic processes AI Coach requests under its commercial/API data handling terms. Anthropic states that API inputs and outputs are not used to train its models by default, and that standard API inputs and outputs are deleted from Anthropic backend systems within 30 days unless an exception applies, such as policy enforcement, legal requirements, longer-retention services, or a separate agreement.

AI Coach is for training guidance only. It is not medical advice, injury diagnosis, or a substitute for a qualified professional.

Website Analytics

This website (shabu.co) uses Google Analytics and our own aggregate usage analytics to help us understand which pages and features are useful — for example, pages viewed, links and download buttons clicked, and how far you scroll. Google Analytics may use cookies or similar technologies for traffic and campaign measurement. We use this website data in aggregate and do not use it to identify individual visitors.

Your Rights

You have the right to:

  • Access your personal data
  • Delete your account and data
  • Export your workout data
  • Opt out of analytics collection

Children's Privacy

Our App is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy in the App and updating the "Last Updated" date.

Contact Us

If you have any questions about this Privacy Policy, please contact us at:

customersupport@strength.club