Privacy Policy
Effective date: February 10, 2026
1. Introduction
NullWorks LLC ("we," "us," or "our") operates LiftLens, an Android application for workout tracking and fitness analytics. This Privacy Policy explains how we collect, use, store, and protect your personal information when you use our app and related services. By using LiftLens, you agree to the practices described in this policy.
2. Information We Collect
Account Data
When you create an account, we collect your email address and authentication credentials. You may optionally provide a display name and profile photo.
Workout Data
We collect data you enter into the app, including exercises, sets, reps, weight, workout duration, personal records, program configurations, and any notes you add to your workouts.
Device Information
We may collect basic device information such as device model, operating system version, and app version to ensure compatibility and diagnose issues.
3. How We Use Your Information
- Provide, maintain, and improve the LiftLens app and services
- Store and sync your workout data across sessions
- Generate analytics, charts, and progress reports from your training data
- Power AI-driven features such as workout suggestions and periodization recommendations
- Communicate with you about your account, updates, or support requests
- Enforce our terms of service and protect against misuse
4. Data Retention
How long we retain your workout data depends on your subscription plan:
Free
6 months
Rolling window of recent workout history
Pro
2 years
Extended history for long-term tracking
Premium
5 years
Comprehensive training archive
Account data (email, profile) is retained for as long as your account is active. If you delete your account, all associated data will be permanently removed within 30 days.
5. Data Sharing & Third Parties
We do not sell your personal data. We may share data with the following categories of third parties:
Infrastructure Providers
Your data is stored and processed using Supabase, which provides our authentication, database, and storage infrastructure. Supabase processes data on our behalf under contractual obligations to protect your information.
Analytics Services
We may use third-party analytics services to understand how users interact with the app and to improve our services. Any analytics data collected will be aggregated or anonymized where possible.
Legal Requirements
We may disclose information if required by law, regulation, or legal process, or to protect the rights, property, or safety of NullWorks LLC, our users, or others.
6. AI Features & Data Processing
LiftLens includes AI-powered features that analyze your workout data to provide personalized suggestions, periodization recommendations, and performance insights. Your training data may be processed by AI models to generate these features. We do not use your personal workout data to train general-purpose AI models. AI processing is performed solely to deliver features within the app to you.
7. Data Security
We implement industry-standard security measures to protect your data, including encrypted data transmission (TLS), secure authentication through Supabase Auth, and row-level security policies on our database ensuring you can only access your own data. While no system is 100% secure, we are committed to protecting your information and promptly addressing any vulnerabilities.
8. Your Rights
You have the right to:
- Access the personal data we hold about you
- Export your workout data in a portable format
- Delete your account and all associated data
- Correct any inaccurate information in your profile
To exercise any of these rights, contact us at the email address listed below. We will respond to your request within 30 days.
9. Children's Privacy
LiftLens is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected data from a child under 13, we will take steps to delete that information promptly. If you believe a child under 13 has provided us with personal information, please contact us.
10. Changes to This Policy
We may update this Privacy Policy from time to time. When we make changes, we will update the "Effective date" at the top of this page and notify users through the app. Your continued use of LiftLens after changes are posted constitutes your acceptance of the updated policy.
11. Contact Information
If you have questions or concerns about this Privacy Policy or our data practices, please contact us:
NullWorks LLC
Email: info@nullworks.io