# Tremor Analysis

> Quantifies hand tremor frequency using accelerometer data and FFT analysis. (iPhone/iPad app by Christopher Lee.)

- Source: https://appshunter.io/ios/app/tremor-analysis/id1579194791 (this page in markdown: same URL + `.md`)
- Developer: [Christopher Lee](https://appshunter.io/developer/1526245041)
- Category: Medical, Utilities
- Price: Free
- Rating: 5.00/5 from 8 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 4 MB
- Languages: English
- Released: 2021-08-08
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/tremor-analysis/id1579194791/reviews.md

## What is Tremor Analysis?

**DISCLAIMER**
Tremor Analysis does NOT provide medical advice.  All medical decisions should be made by a doctor.  Consult with your doctor or healthcare provider before making any medical decisions.  This app is solely meant to assist with quantifying the frequency of a hand tremor.  Please confirm all results with your doctor or healthcare provider using certified equipment.
** **

Tremor Analysis uses accelerometer data to calculate the frequency of a hand tremor.  

Simply press the start button to start collecting accelerometer data.  Once enough data points have been collected, Tremor Analysis automatically performs a Fast Fourier Transform (FFT) which outputs the component frequencies and magnitudes.

After performing the FFT, Tremor Analysis displays a chart of magnitudes vs frequencies from 1hz to 20hz.  Hold or drag along the chart for more information about the frequency and magnitude on the chart.

Customize the app by choosing the number of data points you would like to collect, which axis to collect accelerometer data from, and whether you would like to see rounded or precise data.

Use an Apple Watch to record data from an alternative source.  Analyze the results on your Apple Watch or send the results to your main device to be analyzed later.  You can also sync the settings between both devices for easy configuration.

## Key features

- Accelerometer data collection
- Fast Fourier Transform (FFT) analysis
- Frequency and magnitude charting
- Customizable data points and axes
- Apple Watch integration
- Data syncing between devices

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/tremor-analysis/id1579194791/reviews.md

### 5/5 — Tremor Analysis app is wonderful!

*2024-12-12, version 2.04*

I’ve been using the Tremor Analysis app for about one year to measure my Essential & Parkinson’s tremors and appreciate the ease of use in conjunction with my Apple Watch. I’m able to quickly take and store measurements throughout the day and compare against my medications and diet. The only thing that I would like to understand better is the magnitude readings and some sort of scale with regards to what is “normal” for the average person and where the value crosses over to problematic.  This is my go to application for my tremor problem and appreciate Christopher’s development of this app.
Thank You

### 5/5 — Add annotations, please

*2024-01-07, version 2.04*

Nice app. Works fine. I would like to annotate data points so I know what aggravates or mediates the tremors.

### 3/5 — Not working

*2023-09-11*

Using iPhone 12 direct os 16.6.1. Nothing on the chart. Time counter working. Please check.

Even though I see tremor with my naked eyes it’s recording nothing. Had to purposedly shake it then I see the chart.  

Anyway to include sensitivity adjustment?

### 5/5 — Excellent app!

*2023-08-16, version 2.04*

Just started using it to monitor my kinetic tremor. Easy, intuitive on iPhone and Apple Watch.

## Frequently asked questions about Tremor Analysis

### Does Tremor Analysis provide medical advice?

No, Tremor Analysis explicitly states it does NOT provide medical advice. All medical decisions should be made in consultation with a doctor or healthcare provider. The app is intended solely to assist in quantifying tremor frequency.

### How does Tremor Analysis work?

Tremor Analysis utilizes the accelerometer data from your device to calculate the frequency of a hand tremor. It then performs a Fast Fourier Transform (FFT) to output component frequencies and magnitudes, displayed on a chart.

### Can I use Tremor Analysis with an Apple Watch?

Yes, you can use an Apple Watch to record data from an alternative source. The results can be analyzed directly on your Apple Watch or sent to your main device for later analysis.

### What customization options are available in Tremor Analysis?

You can customize the number of data points collected, choose which axis to collect accelerometer data from, and select whether to view rounded or precise data. Settings can also be synced between devices.

### What is the age rating for Tremor Analysis?

Tremor Analysis has an age rating of 4+, making it suitable for a wide range of users. It is available on iPhone, iPod, and Apple Watch.

### How often is Tremor Analysis updated?

The latest version of Tremor Analysis is 2.04, last updated on March 14, 2022. This indicates a history of updates, though the frequency is not explicitly stated beyond the last update date.

### What are the user reviews like for Tremor Analysis?

Tremor Analysis has received an excellent rating of 5.0 stars from 8 ratings. This suggests a very positive user sentiment regarding its functionality and performance.

### Does Tremor Analysis have ads?

No, Tremor Analysis does not contain advertisements. It is a free application with no in-app purchases or ads, providing an uninterrupted user experience.

## Version history (last 5 releases)

### 2.04 — 2022-03-14

- Favorite saved results
- Redesigned data collection progress card
- Choose a custom number of data to collect

### 2.03 — 2022-01-12

Fixed a bug where sharing results would use an incorrect result.

### 2.02 — 2021-10-10

This app has been updated by Apple to display the Apple Watch app icon.

Squashed some more bugs!

### 2.01 — 2021-10-09

Send the recorded chart when you share your results!

Bug fixes
- watchOS 8.0 compatibility

### 2.0 — 2021-09-21

Use your Apple Watch to record tremors!
- WatchOS companion app
- Record data from your Apple Watch
- Analyze results on your Apple Watch
- Send saved results to your iPhone
- Sync settings between your iPhone and Apple Watch

Share results via a text message or email.
- "I recorded a 4.57 Hz tremor at 9/18/21, 9:41 AM on my iPhone."

Removed some bugs.
- Progress chart is displayed vertically centered
- New app icon
- Other bugs

## Apps similar to Tremor Analysis

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [CYPD](https://appshunter.io/ios/app/cypd/id1472983543) | 3.0 (8) | Free | Medical |
| [StrivePD Parkinson's Assistant](https://appshunter.io/ios/app/strivepd-parkinsons-assistant/id1275051699) | 4.6 (698) | Free | Medical |
| [NeuroRPM](https://appshunter.io/ios/app/neurorpm/id1441684446) | 4.7 (32) | Free | Medical |
| [Parkinson's Disease Manager](https://appshunter.io/ios/app/parkinsons-disease-manager/id953530845) | 3.3 (6) | Free | Medical |
| [Parky for Parkinson's](https://appshunter.io/ios/app/parky-for-parkinsons/id1530016683) | — | Free | Medical |

---

*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 2026-06-01.*