# Vibration Pro — FFT Spectrum Analyzer

> Mobile vibration spectrum analyzer for machinery diagnostics and monitoring. (iPhone/iPad app by Diffraction Limited Design LLC.)

- Source: https://appshunter.io/ios/app/vibration-pro/id1521077799 (this page in markdown: same URL + `.md`)
- Developer: [Diffraction Limited Design LLC](https://appshunter.io/developer/294410307)
- Category: Business, Productivity
- Price: $49.99 with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 17.6 · 15 MB
- Languages: American English
- Released: 2021-02-07
- Data updated: 2026-09-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/vibration-pro/id1521077799/reviews.md

## What is Vibration Pro?

Vibration Pro turns your iPhone or iPad into a precision FFT vibration spectrum analyzer — a portable, professional-grade alternative to a benchtop analyzer for predictive maintenance, machinery diagnostics, and vibration research.

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 — no extra hardware required
- Built-in microphone input for acoustic vibration analysis
- Full support for the Digiducer family of professional USB accelerometers (333D01, 333D04, 633A01, 435B39) and The Modal Shop 485B39 two-channel USB input module — mount the sensor on the machine instead of your phone or iPad, for a wider dynamic range and to keep your device off hot, dirty, or vibrating equipment
- CTC WS200 and WS300 Bluetooth wireless accelerometers
- Sabrent USB input/output dongle support

ANALYZE LIKE A BENCH-TOP SPECTRUM ANALYZER
- Time series and FFT frequency spectrum on every channel, with adjustable sample rate, sample length, and start delay
- Linear-Linear, Log-Log, Log-Linear, and Linear-Log frequency display modes
- Hamming, Hanning, and Flattop windowing
- Integrate and differentiate in the frequency domain (acceleration ↔ velocity ↔ displacement)
- 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
- Adjustable frequency alarm limits

BUILT FOR THE FIELD
- Trigger acquisitions from any channel or the microphone
- Auto-repeat and auto-save for long-duration monitoring
- Machine Menu — organize test scripts into a visual menu by machine
- Save and load complete instrument settings
- Full scripting language (subscription) to guide technicians step-by-step through repeatable, multi-point test procedures
- Apple Watch companion app to trigger and monitor acquisitions

DOCUMENT YOUR RESULTS
- New crisp PDF report — identical on iPhone and iPad — with time series and frequency plots, acquisition and sensor details, and a full peaks table
- Email data and reports directly from the app, or save locally and transfer with the Files app
- Open, non-proprietary format — captures save as plain CSV with full-precision time and frequency data, ready to reload in the app or analyze in Excel, MATLAB, or Python
- Automatic reverse-geocoded job location

In predictive maintenance applications, Vibration Pro helps identify bearing defects, shaft misalignment, imbalance, and structural resonant frequencies — and is equally useful for monitoring material handling and part-handling equipment, structural testing, and general machinery diagnostics.

Scripting is available through an auto-renewing monthly or annual subscription, which can be managed or canceled at any time in your App Store account settings.

## Key features

- Vibration spectrum analysis
- Internal accelerometer and gyroscope support
- External USB accelerometer integration
- Time series data acquisition
- FFT frequency spectra display
- Predictive maintenance diagnostics
- Scripting for guided measurements

## Pricing and in-app purchases

Base price: $49.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Renewing | $19.99 | per month |
| Annual renewing | $214.99 | per year |


## Chart rankings

- #98 in Top Paid · Business (US App Store)


## Frequently asked questions about Vibration Pro

### What devices does Vibration Pro support?

Vibration Pro is compatible with Apple Watch, iPhone, iPad, and iPod Touch devices, allowing for versatile use across different Apple hardware.

### How much does Vibration Pro cost?

Vibration Pro is a paid application priced at $24.99. There are also optional in-app subscription plans for advanced scripting features.

### What is the age rating for Vibration Pro?

Vibration Pro has an age rating of 4+, making it suitable for a wide range of users.

### How often is Vibration Pro updated?

The latest version of Vibration Pro is 4.20, and it was last updated on June 12, 2026. This indicates a commitment to ongoing development and improvements.

### Can Vibration Pro be used offline?

Yes, Vibration Pro can acquire and analyze data using internal sensors, making it functional for offline use in various environments.

### What kind of data can Vibration Pro save?

Users can save acquired time series and frequency spectra data locally on their device. This data can then be emailed or copied to cloud services for further analysis and documentation.

### Does Vibration Pro have ads?

No, Vibration Pro does not contain advertisements. The app is a paid application, ensuring an ad-free user experience.

### What are the subscription options for Vibration Pro?

Vibration Pro offers monthly ($19.99/P1M) and annual ($214.99/P1Y) subscription plans for its scripting capability, which can be renewed or cancelled at any time.

## Version history (last 5 releases)

### 5.01 — 2026-07-29

Version 5.01 improves the accuracy and reliability of measurements
taken with CTC WS200 and WS300 Bluetooth sensors.
 
PLEASE NOTE - REPORTED VALUES HAVE CHANGED
 
- Measurements now use the sample rate each sensor reports for
  itself rather than its nominal rate. Reported frequencies may
  differ from earlier releases, typically by 2% to 4% depending on
  the individual sensor. The new values are the correct ones.
- The maximum frequency (Fmax) shown in the PDF report for these
  sensors has been corrected. It was previously too high.
 
If you compare measurements taken before and after this update, a
small shift in frequency is expected and is not a fault.
 
BLUETOOTH RELIABILITY
 
- A new, more robust Bluetooth connection handler that reconnects
  more reliably and gives clearer device status when you use
  several sensors across different locations
- Vibration Pro now checks that every packet of measurement data
  sent by a sensor actually arrived, and warns you if any are
  missing rather than showing an incomplete measurement as though
  it were complete
- Faults reported by a sensor are now shown to you together with
  the remedy, and a measurement that stops part way through is
  ended with an explanation instead of waiting indefinitely
- A Bluetooth measurement can no longer be cancelled once the
  sensor has started taking data, because interrupting one corrupts
  the measurement. With Auto Repeat on, Cancel still stops the
  sequence after the current measurement finishes.
 
ALSO IN THIS RELEASE
 
- Fixed a scripting problem where special characters in a script
  could prevent the script file from being saved in the output
  directory
- A new Troubleshooting section in the built-in Help
- Apple Watch reliability improvements
- Bug fixes and stability improvements

### 5.00 — 2026-07-22

Version 5.00 is our biggest update ever — a complete visual redesign of Vibration Pro.

- 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
- Brand-new PDF report — crisp, professional, and identical on iPhone and iPad, with time series and frequency plots, acquisition and sensor details, and a full peaks table
- Redesigned peaks list, data source, and Machine Menu screens
- Refreshed app icon and launch experience

Under the hood, everything you rely on is still here: external Digiducer and Modal Shop sensors, CTC WS200/WS300 wireless accelerometers, full FFT analysis, scripting, 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 Pro.

### 4.20 — 2026-06-12

• Added command Set_Master_Directory_To_CY so that the user can put all files for a calendar year in a folder for that year.
• Appended the date and time to directories create using Create_Directory_From_Jobsite_Machine_ID.

### 4.19 — 2026-06-01

• Fixed a bug where rms values were not display propelry in the Peaks window after integration
• Modified the frequency rms computation to exclude more data near 0 frequency since this was biasing the results, particularly after integration of the frequency data

### 4.18 — 2026-03-18

• Fixed a bug where Peak Hold and Running Averages did not work in all input modes.
• Added driver for Sabrent input/output dongle
• Added scripting command for Sabrent Dongle

## Apps similar to Vibration Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PosiTector](https://appshunter.io/ios/app/positector/id930648414) | 3.6 (10) | Free | Business |
| [VibCloud](https://appshunter.io/ios/app/vibcloud/id1445991792) | — | Free | Business |
| [Kiosk Pro Basic](https://appshunter.io/ios/app/kiosk-pro-basic/id409918026) | 3.2 (12) | $24.99 | Business |
| [Kiosk Pro Plus](https://appshunter.io/ios/app/kiosk-pro-plus/id445701154) | 4.7 (13) | $49.99 | Business |

## More apps by Diffraction Limited Design LLC

- [Vibration](https://appshunter.io/ios/app/vibration/id301097580)

All apps by Diffraction Limited Design LLC: https://appshunter.io/developer/294410307

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-05.*