Comparison

HemiPhysioData vs Wristly

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

HemiPhysioData

This app collects raw and processed sensor data from your Apple Watch, including accelerometer and gyroscope readings. It allows you to select activities, preferences, and then exports the data as a CSV file to your iPhone for analysis. Ideal for tracking movement and Range of Motion (ROM) measurements.

Highlights
  • Collects raw and processed sensor data
  • User-friendly activity selection
  • Exports data as CSV files
  • Supports accelerometer and gyroscope
  • Configurable sampling rate
  • Haptic feedback for logging alerts
Read full description

HemiPhysioData serves as an Apple Watch app designed to gather both raw and processed data from the watch's built-in sensors, such as the accelerometer and gyroscope. Its user-friendly interface allows users to effortlessly select different activities and preferences. The collected sensor data, along with additional specified values, is then neatly stored in a CSV file. These CSV files can be easily transferred to the user's iPhone for further processing and analysis. The app is specifically tailored for individuals seeking to collect movement data or Range of Motion (ROM) measurements, with the added benefit of utilizing the data for analytics and machine learning. Users have the flexibility to choose the activity type, movement type, sampling rate (samples per second), and indicate which wrist they wear the watch on, as well as whether it's their dominant or non-dominant side. Some details on screenshots: UID: Predefined twenty users (U01-U20) Activity: Movements (upper limb), Walking, Running, Misc Move Type: It corresponds to the selected activity Interval-Hertz: Samples per second (up to 100 samples per second) Dominant Side: Enable it when watch is on wrist of dominant arm Right Wrist: Enable it when watch is on right wrist Haptic-Feedback: When enabled, the user can set the β€˜Starts In’ time and the logging β€˜Duration'. The user gets the alert when the logging starts (when the starts-in time finishes) and ends (when the duration finishes). Use this option to log activity related data only. It saves from data cleaning later. Logged Files: Shows all saved CSV files on watch. The user can select a file to send to the iPhone or delete from watch. The following sensor data of the Apple Watch (WatchOS) is saved in the CSV file: - Device Motion Processed Data: roll, pitch, yaw, rotation rate x, rotation rate y, rotation rate z, gravity x, gravity y, gravity z, user acceleration x, user acceleration y, user acceleration z, quaternion x, quaternion y, quaternion z, quaternion z. -Accelerometer Raw Data: Acceleration x, y, and z

About

Wristly

Features
Read full description

Wristly – The Ultimate Watch Tracking App Wristly was created from a simple idea: a tool to help us track our watches effortlessly. What started as a private solution among colleagues quickly evolved into a platform for all watch enthusiasts. Track, manage, and analyze your watch collection like never before! Wristly keeps your timepieces organized, monitors your wearing habits, and provides insightful statisticsβ€”all in one place. Whether you’re a casual wearer, collector, or investor, Wristly ensures you stay in control of your watches. Core Features Dashboard Page – Your personalized watch hub! β€’ Stay informed with Dashboard Messages, keeping you up to date on your collection. β€’ Weekly Overview Widget, giving you insights into your wearing habits this week. β€’ Mostly Worn & Forgotten Watches Sections, highlighting your most and least worn timepieces. β€’ Every December, enjoy your Wristly Recap, a personal overview summarizing your entire year of watch-wearing history. Collection Page – Your digital watch collection at a glance. β€’ Create and manage your watches, including all key details and a dedicated watch image. β€’ Mark watches as sold to unlock additional widgets related to sales tracking. β€’ Easily navigate to each watch’s detailed statistics or history pages. β€’ Statistics and collection are deliberately separate, so you can focus on your watches first and dive into analytics when you want. Calendar Page – Log your watch-wearing habits effortlessly. β€’ Manually log which watch you wore today or on past days, ensuring complete and accurate tracking. β€’ All statistics are automatically calculated based on your Collection and Calendar entries. β€’ Keep an overview of your most worn and least worn watches with real-time insights. Statistics Page – Where the magic happens! β€’ Based on your logged data, Wristly automatically generates interactive widgets. β€’ Apply filters to get specific insights tailored to your collection. β€’ If widgets don’t show enough details, open full-screen views to access in-depth information at any time. Advanced Statistics Widgets – Personalize your Statistics Page with additional widgets: β€’ Seasonal Watch Usage – Track how your watch-wearing habits change throughout the year. β€’ Income & Expenses Overview – Keep a financial overview of your watch investments. β€’ Most Expensive vs. Most Worn – Compare the watches you value most vs. those you wear most. β€’ Customizable Layout – Show, hide, and rearrange widgets to match your preferences. Enhanced Dashboard Insights – Stay on top of your collection with: β€’ Current Wear Streak – Track your consecutive days of wearing a watch. β€’ Wristly Recap – Access throughout the year and not just at the end of the year. Import & Export Functionalities – Full control over your data: β€’ Backup & Restore – Secure your database and re-import it when needed. β€’ Excel Export – Export your collection into Excel for deeper analysis. β€’ Image Backup – Export and import watch images for safekeeping. Extended Watch Statistics – Gain deeper insights into your watches: β€’ Usage Rate Indicator – Shows whether a watch is frequently worn or rarely used. β€’ Wear Frequency Graph – A visual breakdown of your wearing patterns. β€’ Wear History Heatmap – A color-coded heatmap displaying your most active watch months. Dark Mode – A sleek and stylish dark theme for an enhanced user experience. Wristly automatically generates all statistics based on your data, making watch tracking seamless and insightful. Built with passion for watch enthusiasts, by watch enthusiasts. Start tracking your watches today with Wristly! Terms of Use - Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

HemiPhysioData3 screens
Wristly4 screens

Verdict

The call

The clearest difference is update cadence: Wristly at every 2 months against HemiPhysioData's every 18 months. HemiPhysioData's advantage is iOS requirement (13.2 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HemiPhysioData ships an update every 18 months, Wristly every 2 months. The most recent releases landed on June 4, 2026 and May 14, 2026 respectively.

Scorecard2 real differences Β· 6 level
HemiPhysioData versus Wristly: the parameters behind the verdict, then further details
ParameterHemiPhysioDataWristly
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 18 monthsEvery 2 months β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.2 β€” better15.6
Further details β€” not scored
Size2 MB39 MB
Age rating4+12+
DeveloperMoez ur RehmanSven Marc Holenstein

In-app purchases

None

HemiPhysioData

No in-app purchases

None

Wristly

No in-app purchases

Questions

Is HemiPhysioData free?
HemiPhysioData is free to download, with no in-app purchases.
Is Wristly free?
Wristly is free to download, with no in-app purchases.
Do HemiPhysioData or Wristly have ads?
Neither HemiPhysioData nor Wristly shows ads.
Which is updated more often, HemiPhysioData or Wristly?
HemiPhysioData ships an update every 18 months, and Wristly every 2 months. Most recently, HemiPhysioData was updated on June 4, 2026 and Wristly on May 14, 2026.

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