Structural Floor Vibration vs TremorGauge

Structural Floor Vibration uses the built-in accelerometer to measure and record floor vibration. This app allows users to evaluate vibration levels and compare amplitudes with criteria published in AISC Design Guide 11: Vibration of Steel-Framed Structural Systems Due to Human Activity.

TremorGauge is 100% software, using your iPhone's built-in accelerometer — no external hardware required. TremorGauge turns your iPhone into a real-time vibration reference meter for relative equipment and surface checks. Built on the iPhone accelerometer, it estimates vibration intensity in mm/s² with a clean color-coded gauge. KEY FEATURES • Real-time vibration magnitude in mm/s² (millimeters per second squared) • Color-coded gauge: green (still), yellow (light), purple (strong) • Live X / Y / Z axis acceleration values in g • One-tap baseline calibration (subtract ambient noise) • Audible peak alarm with adjustable threshold • Fully offline — no network, no tracking, no ads USE CASES • Test machine and equipment vibration • Troubleshoot car / vehicle vibration issues • Compare floor, desk, or furniture vibration changes • Audiophile speaker / driver resonance test • Relative shake awareness • Physics demonstrations PRO FEATURES (optional subscription) • 30-second rolling history curve with peak markers • 100Hz higher-rate sampling mode (5x faster than free) • Persistent baseline that survives app restart • CSV export of full session (timestamp, X, Y, Z, magnitude) • Custom peak alert threshold LIMITATIONS The iPhone accelerometer is not a laboratory-grade instrument. TremorGauge is designed for relative measurements and general awareness, not for safety, regulatory, or risk-monitoring decisions. For calibrated work, use a dedicated piezoelectric or MEMS accelerometer system. PRIVACY All sensor data is processed locally. No audio, video, or location is collected. No analytics, no ads, no account. SUBSCRIPTION INFO • Payment will be charged to your Apple ID account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • You can manage and cancel your subscriptions by going to App Store → Account → Subscriptions. Privacy Policy: https://frexx.top/tremorgauge/privacy.html Terms of Use: https://frexx.top/tremorgauge/terms.html SUPPORT jie.xiang.jm@gmail.com