Privacy Policy

1. Introduction

Welcome to BuildX We are committed to protecting your privacy and ensuring you have a positive experience when using our fitness tracking and social workout application.

2. Information We Collect

3. How We Use Your Information

We use your information to provide and improve our Service, including:

• Personalizing your workout experience
• Processing and storing your workout data
• Enabling social features and connections
• Analyzing usage patterns to improve our service

4. BuildX AI (optional)

BuildX AI is an optional chat in the app and in the coach portal that builds workouts and training plans from what you describe. It only works after you have agreed to the AI data use described here. You can use the rest of BuildX without it.

4.1 What is sent

When you use BuildX AI, we send the following to the AI model so it can answer:

• The messages you write in the chat, and the workouts and plans built in that chat
• Your preferred language and today's date
• An estimate of your training level, based on how many strength workouts you logged in the last 180 days
• A summary of your recent training: your usual session length and training style, sets per muscle group in the last 14 days, and sessions and minutes per sport in the last 28 days
• The equipment used in your logged workouts and the name of your active plan
• Any active injuries you have logged (the affected muscles and how severe they are)

Your name, email address, body weight, location and GPS routes, photos and health measurements such as heart rate are never sent to the AI model.

Injury information is health data. We only send it with your explicit consent, which you give when you turn on BuildX AI.

4.2 Coaches using BuildX AI for a client

A coach can use BuildX AI in the coach portal to build a workout or plan for one of their clients. In that case the client's information listed in 4.1 is sent instead of the coach's. This only happens when the client is connected to that coach and has agreed to the AI data use in the app themselves. The chat belongs to the coach and is kept as described in 4.4.

4.3 Who receives it

The AI model is provided by Anthropic PBC (United States). Anthropic processes the information on our behalf as a data processor, only to produce the answer, under its commercial terms, and does not use it to train its models. Because Anthropic is based in the United States, the information is transferred outside the EU/EEA under Anthropic's data processing terms, which include the EU Standard Contractual Clauses.

4.4 How long it is kept

• Chats, and the workouts and plans in them, are deleted automatically 30 days after they are created. You can delete any chat yourself at any time.
• Workouts or plans you save to your library are kept like any other workout or plan you create.
• We keep daily usage totals (number of chats and messages, and the amount of AI processing used) to apply usage limits and manage costs. These totals contain no message content.

4.5 Your choices

• The legal basis is your consent (GDPR Article 6(1)(a), and Article 9(2)(a) for injury information).
• You can withdraw your consent at any time in the app under Settings, Privacy. This deletes all your chats, including chats a coach started for you.
• BuildX AI suggests workouts and plans. It is not medical advice, and it makes no decisions about you with legal or similarly significant effects.

5. Contact Us

If you have any questions about this Privacy Policy, please contact us at:
hello@buildx.fit