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.
Quite a nice application, however, it is limited to measuring frequencies up to 50Hz (would like to see up to 5kHz), and the sample time window is a bit too short in my view (varies depending upon the sampling rate). Furthermore, I just can't seem to calibrate it - it keeps coming up with an unstable/orientiation message that cannot be resolved (some help from the author would be nice).
Lovely!
A big reader
Great app. I use it to analyse resonance and vibration in my 3D printer as I add and replace components. The ability to email the data to myself in spreadsheet form is much appreciated.
Brilliant app
Benn Weer
Does exactly what it claims to, measures vibration up to 50Hz. Lots of control regarding sampling rate, time and delay. Files can be saved and exported as CSV. Spectrum analysis could use some more labels but nevertheless very good app.
Recommended
Transfloat
This is a well written very functional app. A lot of thought has gone into the interface.
- Apple Watch reliability improvements: the watch screen now shows
the current sensor and settings as soon as it opens, and updates
correctly when the iPhone app is launched
- Bug fixes and stability improvements
Version 5.01
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
14.7 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.
