Last updated: March 14, 2026
Mako Technology Labs LLC (“Mako,” “we,” “us”) publishes mobile and web apps including Barbell531. This Privacy Policy explains how this app handles information.
No personal data is collected, transmitted, or stored by Mako Technology Labs LLC. Barbell531 operates entirely on your device. Training information such as lifts, sets, weights, assistance work, and workout progress is stored locally on your phone or tablet and is not transmitted to us or to any third party.
The workout and progress data you enter into Barbell531 is stored locally on your device. This data exists solely for your personal tracking and is not uploaded to external servers or cloud services operated by us.
Barbell531 currently does not include advertising, analytics services, or third-party tracking technologies. We do not share or sell user data.
If optional analytics or crash reporting tools are introduced in the future to improve app stability or usability, this Privacy Policy will be updated to clearly describe what data is collected, how it is used, and which provider processes the data.
All information stored by Barbell531 remains on your device. The app relies on the security protections provided by the operating system of your device (such as iOS or Android). Mako Technology Labs LLC does not operate servers or maintain user accounts for this application.
All training data in Barbell531 is stored locally on your device and is retained only as long as the app remains installed on your device.
You have full control over your data and may delete it at any time by:
Because Mako Technology Labs LLC does not collect or store user data on external servers, we cannot access, retrieve, or delete your data on your behalf.
Barbell531 does not access or write data to Apple HealthKit, Google Fit, or any other health-related APIs at this time. If such integrations are added in the future, we will request your explicit permission before accessing those services and update this policy accordingly.
Barbell531 is intended for general fitness use and is not directed toward children under the age of 13. We do not knowingly collect personal information from children.
We may update this Privacy Policy to reflect changes in our practices, features, or legal requirements. When updates are made, the “Last updated” date at the top of this page will be revised.
Mako Technology Labs LLC
York, Pennsylvania, United States
support@makolabs.io