PRAXIS SCIENCE LAB / ANDROID
XLab Tools — Privacy Policy
How Praxis Science Lab handles information for this Android app.
Effective date: 2026-09-10. This notice describes Android version 0.8.0 (14) and the configuration documented below.
Praxis Science Lab is the publishing brand used by Traian Anghel. For support or privacy questions, email traiananghel@gmail.com. Include the app name and version. Do not send passwords, medical records, private recordings or other sensitive information.
Information handled by the app
Ruler and level measurements, tone presets, sound-level statistics, session names, calibration profiles and preferences are stored on the device. Microphone samples and waveform/spectrum frames are processed temporarily in memory. They are not saved as audio files or transmitted. Saved sound sessions contain numeric level statistics and, for new sessions, a complete numeric journal of block levels and threshold events, not audio or analysis frames. The app also stores ruler chain segments, named surface references, project names, room labels, notes and optional coordinates that you enter manually. Imported microphone correction profiles are stored locally. The app does not request location permission or track your position. The current version has no account, advertising, analytics or cloud service.
Permissions, services and sharing
Microphone permission is requested when starting Sound Meter. It can be denied or revoked in Android Settings; the other tools do not need it. The level uses available motion sensors. Audio capture and tone playback stop when the app leaves the foreground. The current Android application declares no Internet permission. Advertising is planned for a future version; this notice will be updated before advertising is enabled.
Exports
When you choose Export PDF or Export CSV, Android asks where to save the report. Reports can include the measurement, original calibration, project name, room, notes and any coordinates you attached. The selected document provider, including a cloud provider if you choose one, handles the exported file under its own terms. Reports are not automatically sent to Praxis Science Lab.
Retention and deletion
Clear app storage in Android Settings or uninstall to remove local measurements, calibration profiles and preferences. Android app backup is disabled in this build. Unsaved numeric journals may temporarily remain in app cache after an interruption. Exported copies remain in your chosen destination until you delete them there; clearing app storage does not delete those copies. Praxis Science Lab has no server copy of your measurements.
Security
Private app files use Android application storage protections. No additional database-encryption guarantee is made. Keep your device protected and control access to files you export. There is no Praxis Science Lab account to delete for this app.
Support messages and external pages
If you contact us, we receive your email address and the information you choose to send. We use it to answer your request and resolve the issue, not for advertising. Correspondence remains only as needed for that purpose and any applicable legal obligations; you can request deletion. Our email provider processes messages under its own terms. We do not sell support correspondence.
Opening this policy or other external links sends ordinary connection information to the website or browser provider. See our website privacy notice. App-local data is not automatically included in those requests.
Your choices
You can clear local data and use the contact above to ask about support correspondence or request access, correction or deletion where applicable. We may need information to identify the relevant request. You may also contact your local data protection authority. Local app information is processed to provide the functions you use; support correspondence is processed to respond to your request.
Changes
We update this notice when app behavior or relevant practices change. The date and version above identify the policy you are reading.