All-new in 5.0: redesigned interface, color-coded channels, drag-cursor readouts, guided calibration, and PDF reports. Portable spectrum analysis, reimagined.
Vibration turns your iPhone or iPad into a true FFT vibration spectrum analyzer — a portable alternative to a commercial spectrum analyzer for machinery diagnostics, acoustic testing, and hobbyist vibration analysis.
Version 5.00 is a complete visual redesign: a modern, color-coded interface built around the way vibration technicians actually work, with clean, uncluttered screens for every channel and setting, a drag-cursor readout for reading exact values on any plot, and a crisp new PDF report you can generate and share in seconds.
MEASURE FROM ANYWHERE
- Built-in 3-axis accelerometer and gyroscope — sensitivity to about 0.02g, range ±2g
- Built-in microphone input for acoustic vibration analysis
- Digiducer professional USB accelerometer support (additional Digiducer features unlockable via in-app purchase)
ANALYZE LIKE A BENCH-TOP SPECTRUM ANALYZER
- Time series and FFT frequency spectrum on every channel, with adjustable sample rate (10 Hz–100 Hz internal, up to 48 kHz with microphone/Digiducer)
- Linear-Linear, Log-Log, Log-Linear, and Linear-Log frequency display modes
- Hamming, Hanning, and Flattop windowing
- Integrate and differentiate in the frequency domain
- RMS and peak levels per channel and combined
- Frequency averaging and peak hold
- Color-coded peaks list with the top 5 peaks per channel
- Tap-and-drag cursor readout in portrait or landscape, with magnetic snap to peaks
- Selectable data length from 256 to 4096 samples, variable start delay up to 20 seconds
- DC-remove option to eliminate the gravity vector
BUILT FOR THE FIELD
- Guided accelerometer calibration with an on-screen orientation guide, live stability meter, and a locked reposition countdown
- Trigger acquisitions from one or more accelerometer channels or the microphone
- Auto-repeat and auto-save for long-duration monitoring
- Apple Watch companion app — trigger a sample and review settings right from your wrist
DOCUMENT YOUR RESULTS
- New crisp PDF report — identical on iPhone and iPad — with time series and frequency plots and acquisition details
- Open, non-proprietary format — data saves as plain CSV you can reload in the app or open in Excel, MATLAB, or Python, and email straight to your desktop
- Save data locally and transfer with the Files app
- Screen snapshots sync to your computer like any photo
In many applications, Vibration is an excellent portable alternative to a commercial spectrum analyzer. In predictive maintenance applications it can help identify bearing defects, shaft misalignment, imbalance, and structural resonant frequencies — and it's equally useful for monitoring the acceleration of part and material handling equipment.
Further development and additional features are planned. Use the email links in the app to request features or report issues.
I had this app for several years and it suddenly stopped working -- no longer records, saves or allows contact with developer. Disappointing.
Solid App
CycCorn
Bought this app over 5 years ago because the vibration sensor we were using in the lab wasn’t quite working for our need. We wanted to know the vibration noise source for a piece of equipment we were designing. With this app, we were able to determine the peak frequencies, and therefore the source of our noise. Impressed the whole team with the fact that it was an iPhone that solved the mystery. Ever since then this app has been a fun toy at home.
Mostly good, but possibly flawed
Middlesteve
I was impressed to find such a technically advanced app. However when I use the microphone input on an iPhone, the sound frequencies appear to be represented in the spectrum view at twice their actual frequency. I haven't put it on the bench yet, but when I calibrate a whistle or sing tone with another app, the Cleartune app, the tones are represented in this Vibration app at twice the frequency registered in the Cleartune app. I have used the Cleartune app to practice various pieces of music and it seems spot on.
Simple and nonfunctional
Nickname 5589
Didn’t work for me, might work for you. Randomly cut recordings short after a few seconds then locked up and tried to text the data file, at which the cancel button greyed out. Documentation looks like freeware from 1998.
Version 5.00 is our biggest update ever — a complete visual redesign of Vibration.
- All-new, modern interface — clean, uncluttered screens for every channel and setting
- Color-coded channels throughout, so it's always clear which trace is which
- Drag-cursor readout — touch and drag on any plot to read exact values, with magnetic snap to peaks, in portrait or landscape
- Guided accelerometer calibration — on-screen orientation guide, live stability meter, and a locked reposition countdown
- Brand-new PDF report — crisp, professional, and identical on iPhone and iPad, with time series and frequency plots and acquisition details
- Refreshed app icon and launch experience
Under the hood, everything you rely on is still here: built-in accelerometer, microphone, and Digiducer input, full FFT analysis, and the Apple Watch companion app.
As always, use the email links in the app to send feedback or report an issue — thank you for using Vibration.
Version 5.00
The developer, Diffraction Limited Design LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Bruce Truax
Size
14.6 MB
Category
Business
Compatibility
Requires iOS 17.6 or later.
iPhone Requires iOS 17.6 or later.
iPad Requires iPadOS 17.6 or later.
Mac Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
