Vibration Meter - Seismograph

Vibration Meter is a professional-grade vibration analysis tool that turns your phone into a precision instrument. Measure vibration intensity in real time with beautiful analog gauges, record seismic waveforms, analyze frequency spectra, and monitor vibration 24/7 — all from your pocket.

Whether you need to check floor vibration from construction, monitor earthquake activity, assess structural integrity, or detect environmental vibration — this app provides everything in one place.

[Real-Time Vibration Meter]

- 13 gauge designs: 10 analog styles with chrome bezels + 3 SpeedView variants
- Live vibration measurement with Min, Max, Average statistics
- 5 measurement units: mm/s, cm/s², Gal, g, m/s²
- Color-coded intensity levels with MMI scale descriptions
- Approximate Richter magnitude estimation
- Expert mode with real-time vibration chart
- Screen capture for measurement snapshots

[3-Axis Seismograph]

- Real-time X, Y, Z acceleration waveform display
- Configurable time windows: 10s, 30s, 60s, 120s, 300s
- Current and peak magnitude tracking in Gal
- Event detection with automatic recording
- Save recorded seismic data as CSV files

[FFT Frequency Spectrum Analysis]

- Real-time Fast Fourier Transform on accelerometer data
- 5 FFT sizes: 256, 512, 1024, 2048, 4096 samples
- Linear and Logarithmic (dB) scale display
- Dominant frequency and magnitude identification
- Continuous mode and single-shot capture mode

[24-Hour Vibration Monitor]

- Background monitoring with Foreground Service
- Configurable vibration threshold in mm/s
- Pre-event buffer (5-120s) and post-event recording (5-120s)
- Adaptive sensor rate for battery efficiency
- Automatic event detection with JSON storage and notifications

[Vibration Alert System]

- Custom vibration threshold with slider or 4 presets
- Presets: Micro (0.5), Floor Noise (2.0), Construction (5.0), Earthquake (15.0 mm/s)
- Instant alert with device vibration when threshold exceeded
- Real-time alert history with PDF/CSV export

[Vibration Report and Data Export]

- View all recorded vibration events with MMI badges
- Multi-select events for batch operations
- Generate professional PDF reports or export CSV data
- Share via email, messaging, or cloud storage

[Structural Health Assessment]

- 30-second FFT-based natural frequency detection
- 4 building types: Reinforced Concrete, Steel Frame, Wood Frame, Masonry
- Normal / Attention / Warning verdict with color-coded results
- Save and share assessment reports as PDF

[Real-Time Earthquake Map]

- Live earthquake data from USGS with magnitude and time filters
- Magnitude-colored event cards with depth and distance info
- 5-minute cache for fast, bandwidth-efficient browsing
- Pull-to-refresh for latest data

[Earthquake Information Guide]

- Seismic risk assessment for your current location
- Comprehensive MMI scale explanation (levels 1-12)
- Unit comparison guide: mm/s, Gal, g, m/s²
- Educational content about earthquake measurement

[Key Features]

- 6-level color system for consistent vibration intensity display
- Rajdhani font for clear numeric readability
- Spike filter and sensor warm-up for accurate readings
- Full dark mode support with optimized color palette
- Disclaimer: Results are for reference only. Actual performance may vary by device.