1. Introduction & Core Privacy Principle
Welcome to Vibration Meter ("the App", "we", "our", or "us"). We are strongly committed to protecting your privacy and ensuring complete transparency regarding how hardware sensors and local device storage are utilized.
🔒 100% Offline & On-Device Processing Guarantee: Vibration Meter processes all seismic and vibration sensor data locally on your physical device in real time. We do not collect, store, transmit, sell, or share any personal identity, telemetry, or vibration recordings with external servers, cloud databases, or third parties.
⚠️ Important Regulatory Notice
Legal Disclaimer & Terms of Use
1. Consumer & Educational Reference Utility Only
Vibration Meter is strictly an indicative consumer utility and educational measurement tool. It is designed for general vibration observation, DIY vibration diagnostics, student demonstrations, hobbyist monitoring, and comparative relative assessments.
- The App is NOT a certified scientific seismograph, seismological observatory station, or structural engineering diagnostic system.
- The App is NOT compliant with industrial calibration or vibration inspection standards such as ISO 10816 or ISO 20816, and must not be used as a replacement for calibrated industrial vibration analyzers with piezoelectric accelerometers.
- The App must NOT be used for legal disputes, commercial construction certification, machinery warranty claims, or official compliance audits.
2. Earthquake & Life Safety Warning (Do NOT Rely for Emergencies)
DO NOT USE THIS APPLICATION AS AN EMERGENCY EARTHQUAKE EARLY WARNING SYSTEM, LIFE SAFETY ALERT, OR DISASTER EVACUATION TRIGGER.
- The App does not have certified real-time seismic network feeds and is limited entirely to the physical host smartphone's local accelerometer.
- The developer, Shuttle Technologies, accepts zero liability for any personal injury, loss of life, structural collapse, panic, emotional distress, or damage resulting from earthquakes, tremors, structural failures, or reliance upon the App's readings, waveforms, or audible threshold alarms.
- In the event of an earthquake or seismic activity, always follow official emergency protocols, Civil Defense instructions, and verified government meteorological alerts.
3. Mobile MEMS Sensor Hardware & Accuracy Limitations
All vibration calculations, acceleration waveforms (X, Y, Z axes, and vector magnitude), dominant frequency estimations (Hz via FFT), and Modified Mercalli Intensity (MMI) classifications are mathematically derived from your smartphone's built-in Micro-Electro-Mechanical Systems (MEMS) accelerometer:
- Hardware Variances: Mobile phone accelerometers vary significantly across manufacturers, models, and chipsets in terms of sensitivity, noise floor, thermal drift, frequency response bandwidth, and dynamic range (typically limited to ±2g, ±4g, or ±16g).
- Sampling Jitter: Android OS sensor sample rates are subject to OS scheduling latency, battery saving throttling, and sensor polling variances.
- Calibration Offsets: While calibration adjustment tools are provided in the App, values remain approximations and should never be considered absolute scientific truth.
4. Machinery, Vehicle & Device Placement Disclaimer
Users who choose to place their mobile device on vibrating machinery, engines, washing machines, pumps, vehicle dashboards, or industrial equipment do so entirely at their own risk:
- We are not responsible for any physical damage to your mobile device, including cracked screens, camera optical image stabilization (OIS) damage, internal sensor failures, or dropping/falling caused by high-amplitude machinery vibration.
- Ensure your device is safely and securely anchored during testing to avoid equipment accidents or mechanical entanglement.
5. No Warranty & Limitation of Liability
VIBRATION METER IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF ACCURACY, RELIABILITY, COMPLETENESS, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. UNDER NO CIRCUMSTANCES SHALL SHUTTLE TECHNOLOGIES BE HELD LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING FROM YOUR USE OF OR INABILITY TO USE THIS APPLICATION.
2. Information We Collect & Process
Vibration Meter does not collect personal identifiers or user tracking data. Specifically:
- No Personal Identifiers: We do not collect names, email addresses, phone numbers, contacts, or accounts.
- No Precise Location Data: The App does not request GPS or location permissions.
- No Audio or Camera Access: The App does not record sound or access cameras.
- No User Profiling or Behavioral Tracking: We do not monitor how often you open the App or what features you use.
3. Accelerometer Sensor Access
The App requests standard Android runtime access to the Hardware Accelerometer (Sensor.TYPE_ACCELEROMETER) to capture raw physical linear motion and vibration:
- Mathematical Computation Only: Raw acceleration values ($X$, $Y$, $Z$ axes in m/s²) are processed through mathematical algorithms (vector magnitude calculation, moving window buffer, and FFT peak frequency estimation).
- Ephemeral Memory: Live graph waveform points are maintained in volatile application RAM buffer and discarded when refreshed or closed.
- Zero Network Transmission: Sensor readings are never uploaded or streamed to any external servers.
4. Android Permissions & Justifications
| Permission |
Technical Purpose |
Privacy Impact |
| VIBRATE |
Triggers haptic feedback when acceleration crosses your customized alert threshold or when buttons are tapped. |
Local hardware vibration only. Zero data collected. |
| WAKE_LOCK |
Powers the "Keep Screen Awake" feature to prevent the screen from sleeping during long-duration continuous monitoring. |
Controlled via user toggle in the top bar. |
| POST_NOTIFICATIONS |
Allows the system to post notifications if background recording or threshold alarms are active (Android 13+). |
Local device notification only. |
5. Local Data Storage & Export Rights
All recorded sessions and preferences remain exclusively under your control:
- Recorded Sessions: When you record a vibration test session, peak values, minimums, averages, and duration are saved locally in the App's private SQLite database on your device.
- User Settings: Selected color theme, language locale, graph buffer size, alarm threshold, and calibration offsets are stored locally via Android SharedPreferences.
- CSV Export: When you choose to export session data, a CSV file is generated locally and shared solely through the standard Android Share Sheet to destinations you manually choose (such as email, local storage, or cloud drives).
- Deletion: You can permanently delete saved sessions individually or clear all data at any time from the History screen. Uninstalling the App completely removes all local database records.
6. Third-Party Services & Advertising
Vibration Meter is currently offered with zero third-party tracking, analytics, or behavioral cookies. The application does not contain third-party banner or interstitial advertisements.
Should non-personalized or personalized advertising (e.g., via Google AdMob) be activated in future releases, any ad serving will strictly follow Google Play Families and Data Safety guidelines, and users will retain full control to opt out of ad personalization via their Android system settings.
7. Children's Privacy (COPPA & GDPR-K Compliance)
Vibration Meter does not knowingly collect, request, or maintain personal information from children under the age of 13 (or under 16 in the European Union). The App is a general-audience sensor utility suitable for users of all ages.
8. Changes to This Privacy Policy & Disclaimer
We reserve the right to revise this Privacy Policy and Legal Disclaimer periodically to reflect technological advancements, statutory updates, or feature additions. Any revisions will be published on this page with an updated "Last Updated" timestamp.
9. Contact Information
If you have any questions, suggestions, or concerns regarding this Privacy Policy, our data practices, or the Legal Disclaimer, please contact us directly at: