Privacy Policy
Effective Date: February 18, 2026
Introduction
CaliStack we operates the CaliStack mobile application. This Privacy Policy explains how we collect, use, store, and protect personal information when you use the App.
CaliStack is developed and operated by an independent developer based in Kerala, India.
If you have any questions about this policy, you may contact us at: calistack.app@gmail.com
By accessing or using the App, you agree to the practices described in this Privacy Policy.
Information We Collect
Information You Provide
When you sign in using Apple or Google, we may collect the following information:
Full name
Email address
Profile photo
You may also provide workout-related data, including:
Sets and repetitions
Workout progress tracking
We do not collect medical records, biometric identifiers, or clinical health diagnoses.
Automatically Collected Information
When you use the App, certain technical information may be collected automatically through third-party services such as Firebase.
Device model and type
Operating system version
App version
Crash logs
Usage data and interaction events
IP address (processed by analytics providers)
This information is used to monitor performance, improve reliability, and enhance the overall user experience.
Authentication
CaliStack supports authentication through:
Google Sign-In
Apple Sign-In
Authentication is securely handled by these providers. We do not store or have access to your account passwords.
Payments and Subscriptions
CaliStack offers free workouts, one-time purchases, and subscription plans.
Payments are processed through:
Apple In-App Purchases
Google Play Billing
RevenueCat (subscription management)
We do not collect or store credit card or payment details. All transactions are securely processed by the respective platforms.
RevenueCat may process transaction identifiers and subscription status data solely for managing purchases.
How We Use Your Information
We use collected information to:
Create and manage user accounts
Store workout progress
Provide core app functionality
Improve performance and stability
Monitor crashes and errors
Process purchases and subscriptions
Provide customer support
We do not sell personal data.
We do not use personal data for advertising purposes.
Data Storage and Security
User data is stored using secure cloud infrastructure provided by Supabase.
We implement industry-standard security measures, including:
HTTPS encryption for data transmission
Secure cloud storage
Access control restrictions
While we take reasonable measures to protect your data, no digital system can guarantee absolute security.
Data Retention
We retain personal information only while your account remains active.
If you delete your account, the following data will be permanently removed from our systems:
Personal information
Workout data
Profile information
Account deletion is irreversible.
Account Deletion
You may delete your account directly within the App.
Once deleted, all associated personal information is permanently removed.
If you require assistance, contact: calistack.app@gmail.com
International Data Transfers
CaliStack is available worldwide. Because we use global service providers such as Supabase, Firebase, and RevenueCat, your data may be processed in countries outside your country of residence.
By using the App, you consent to such data transfers.
Children’s Privacy
CaliStack is not intended for children under 13 years of age.
We do not knowingly collect personal information from children under 13. If we become aware that such data has been collected, it will be deleted promptly.
If you believe a child under 13 has used the App, please contact: calistack.app@gmail.com
Workout and Health Disclaimer
CaliStack provides workout guidance and tracking tools for informational and educational purposes only.
We are not medical professionals.
By using the App, you acknowledge and agree that:
You participate in workouts at your own risk
You are responsible for ensuring you are physically capable of performing exercises
CaliStack is not liable for injuries, damages, or losses resulting from use of the App
If you have medical conditions or concerns, consult a qualified healthcare professional before beginning any exercise program.
Your Rights
Depending on your jurisdiction (including the EU, UK, and California), you may have rights such as:
Access to your personal data
Correction of inaccurate data
Deletion of your data
Data portability
Restriction or objection to processing
To exercise these rights, contact: calistack.app@gmail.com
We do not sell personal information.
Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be reflected by updating the Effective Date at the top of this page.
Continued use of the App after changes constitutes acceptance of the revised policy.
Contact Information
CaliStack
Kerala, India