Resonance vs Shake Meter

Resonance turns your smartphone into a professional vibration analysis instrument. Measure, record, and analyze vibrations with real-time spectral analysis — on-site, in seconds. Real-Time Analysis: • Live accelerometer streaming with instant frequency domain charts • Power Spectral Density (PSD) and FFT analysis • Configurable window functions (Hanning, and more) • Velocity and displacement computed from acceleration data Bluetooth Sensor Support: • Connect external Bluetooth accelerometers • Compatible with Witmotion sensors • Seamless pairing and real-time data streaming Powerful Tools: • Damping ratio estimation • Customizable units • Adjustable recording delay and duration Export & Share: • Export raw data as CSV for further analysis • Generate professional PDF reports • Save and revisit past recordings on-device Versatile Applications: • Assess suspended floor serviceability • Measure fundamental periods of structures • Diagnose problematic floor or machinery vibrations • Detect resonance issues • Aid in isolator mount design and validation • Vehicle NVH and HVAC vibration diagnostics Perfect for engineers, architects, technicians, researchers, and hobbyists seeking vibration analysis on the go. Available in English, Spanish, German, French, Portuguese, Russian, Japanese, Chinese (Simplified & Traditional). Terms of Use (EULA): https://resonance.kodapro.dev/eula Disclaimer: Use of the Resonance Vibration Analysis app is at your own risk. The app is provided on an AS-IS basis. We do not assume responsibility for decisions made by users based solely on information provided by this app.

Hold your phone still for 5 seconds — find out how steady your hands really are. Shake Meter uses your phone's accelerometer to capture every micro-movement and turn it into a Stability Score from 0 to 100. [How It Works] - Hold the phone firmly with both hands - A 3-second countdown begins automatically - Stay as still as possible for 5 seconds - The accelerometer captures movements at 50 samples per second - Your Stability Score and Tremor Index appear instantly [What Your Score Means] Neurosurgeon (90-100): Your hands are steadier than a robotic arm. You could thread a needle in a hurricane. Stone Cold (75-89): Ice-cold precision. Your hands make calculated, deliberate decisions. Pre-Coffee Mode (55-74): Solid stability, even before the morning caffeine kicks in. Vibration Enthusiast (35-54): Your hands hum like a phone on silent. Something exciting going on? Human Maraca (15-34): Not shaking — percussing. You have a rhythm all your own. Seismic Event (0-14): Scientists have registered your tremor on the Richter scale. [Features] - Real-time seismograph waveform during measurement - Stability Score from 0 to 100 - Tremor Index in scientific units (g) - Hand Signature — your personal tremor pattern as a unique waveform - Personal best tracking - 9 languages: English, Korean, Japanese, Chinese, Spanish, French, German, Portuguese [Fun Ways to Use It] - Compare your score before and after coffee - Test dominant hand vs. non-dominant hand - Challenge friends to beat your score - Check how fatigue affects your stability Take the test now — and find out which category you fall into.