Comparison

ARorthopaedicGoniometer vs Sentio

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

Head to head
About

ARorthopaedicGoniometer

This app uses augmented reality to accurately measure joint range of motion. It allows medical professionals to easily record and save measurements directly from their device's camera, offering a precise and convenient alternative to traditional goniometers.

Highlights
  • Augmented reality angle measurement
  • Accurate joint range of motion estimation
  • Live camera feed measurement
  • Save measurements as screenshots
  • Adjustable pointer calibration
  • Intuitive point selection
Read full description

Range of motion by measuring angles is frequent need in every day clinical tasks during patient examinations by orthopaedic surgeons, physicians, physical therapists and veterinarians. Commonly used method is to measure manually with a classical goniometer the range of motion of a patients joint. Often these manual measurements are inaccurate and depend on the individual interpretation. Augmented realityΒ (AR) offers a novel method of blending virtual and real word. The measured angles with the advent of the augmented reality technology delivers accuracy and repeatability. Expensive motion capture data system offers Augmented RealityΒ (AR) but this are a privileges of special costly scientific labs. Apple developed and popularised (AR) Augmented Reality technology readily available for its devices, thus miniaturising expensive high tech labs inside your iPhone in front of you screen. The AR orthopaedic GoniometerApp is medical software aimed for orthopaedic surgeons, physicians, physical therapists and veterinarians providing tool that allow doctors to: - determine the most accurate possibly way, in live images directly from your the camera in space angles thus estimating easily range of motion. By marking three points by touching over with the phone’s screen a colourful sphere is printed in augmented reality each time while seeing the joint of the patient in screen. -Angle values are printed sequentially after measurement on the screen, while you can continue measuring and choosing another set of three new points of interest, by easily β€˜grabbing’ the last two points of measurement , without loosing their last positions. By ordering the patient to place his extremity in new position you can register, while seeing the last measurement in space in Augmented Reality. -Point tip sphere is the ’ target cross’ from which the spheres appears during registration each time the screen is touched. The positional calibration of pointer tip sphere in AR can be easily done by allowing the user to adjust the XYZ position of the pointer tip sphere by pressing the directions buttons accordingly. This feature enhanced the accuracy of sphere placement during measurement over joints in Augmented Reality (AR). -Save the measured values and results as a screenshot to the photo roll for later review or consultation. Augmented reality offers precision and accuracy because points are taken in 3D space. During the test patients are not constrained by any device and have a total freedom of movement. The ability to integrate -regardless of the camera position - live imagery and measure the angles and estimating the range of motion concurrently makes the app a simple and useful tool in clinical setting. In a busy everyday practice, measuring angles by the classic way namely classic orthopaedic goniometers , is time consuming and cumbersome. Orthopaedic goniometers must be not be physical present any more. The app offers a very convenient and accurate way to perform measurements of angles in space . The app is not a simple goniometer, is an enhanced product which helps to monitor objectively the course of the treatment and evaluate optimally joint motions. This App is particularly useful especially in clinical settings where you need a quick results without losing time. All information received from the software output must be clinically reviewed regarding its plausibility before patient treatment! The ARorthopaedic Goniometer App indicated for assisting healthcare professionals. Clinical judgment and experience are required to properly use the software. The software is not for primary image interpretation.

About

Sentio

Features
Read full description

Sentio turns the sensors already in your iPhone β€” microphone, camera, torch, accelerometer β€” into a set of measurement tools, and keeps every measurement on the device. WHAT IT DOES Sentio provides a growing registry of measurement tools. Each one uses the phone's sensors in a specific way: β€’ Spectrum β€” record ambient sound and see its frequency content, peaks and decay β€’ Color and light β€” measure colour and brightness with the camera's exposure locked β€’ Blinking β€” detect and time periodic light sources β€’ Knock β€” tap an object and capture how it rings and how quickly it damps β€’ Polarization β€” measure how much light passes through at a quarter turn β€’ Composite tools that drive the torch or the haptic engine and measure the response Some tools use two phones together β€” one emits, one measures β€” over a direct Bluetooth link, with no account required. ORGANISE WHAT YOU MEASURE Measurements attach to a simple catalog: categories, objects, and the scenario you measured them for. You can also capture first and file it later. Any measurement can be given a ground-truth label after the fact, so a session of guesses becomes a record you can actually check yourself against. Guided activities chain several tools into one procedure when a single sensor is not enough. OFFLINE BY DEFAULT Everything runs on the device. There is no account, no upload step, and no network call needed to take or view a measurement β€” the app is fully usable in Airplane Mode, and that is the normal way to use it. Signing in with Apple or Google is entirely optional and does one thing: sync your own catalog between your own devices. HONEST ABOUT WHAT IT IS NOT Sentio is an instrument, not an oracle. It reports what the sensors measured and how it derived the numbers. It does not claim laboratory accuracy, it is not a medical or diagnostic device, and it should not be used to make safety decisions. Phone sensors vary between models; the tools are built around relative and resonance-based features precisely because absolute levels are not comparable across devices. PERMISSIONS β€’ Microphone β€” required by the audio tools, used only while a measurement is running β€’ Camera β€” required by the optical tools β€’ Bluetooth β€” only for the two-phone tools, to find the other handset No advertising, no analytics SDK, no third-party trackers.

Screenshots

ARorthopaedicGoniometer4 screens
Sentio4 screens

Verdict

The call

The clearest difference is price: Sentio at Free against ARorthopaedicGoniometer's $6.99. Sentio also leads on update cadence (every 3 days vs every 10 months). ARorthopaedicGoniometer's advantage is device support (3 vs 1) and iOS requirement (13.2 vs 17.0). On ads and in-app purchases 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

Sentio is free to download; ARorthopaedicGoniometer costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ARorthopaedicGoniometer ships an update every 10 months, Sentio every 3 days. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

Scorecard4 real differences Β· 4 level
ARorthopaedicGoniometer versus Sentio: the parameters behind the verdict, then further details
ParameterARorthopaedicGoniometerSentio
Price$6.99Free β€” better
Positive reviews0.0% of reviewsβ€”
Update frequencyEvery 10 monthsEvery 3 days β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidβ€”
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS13.2 β€” better17.0
Further details β€” not scored
Size2 MB16 MB
Age rating17+4+
DeveloperORTHOPRACTIS.COM SINGLE MEMBER P.C.Polina Bloshchitcyn

In-app purchases

None

ARorthopaedicGoniometer

No in-app purchases

None

Sentio

No in-app purchases

Questions

Is ARorthopaedicGoniometer free?
ARorthopaedicGoniometer costs $6.99, with no in-app purchases.
Is Sentio free?
Sentio is free to download, with no in-app purchases.
Do ARorthopaedicGoniometer or Sentio have ads?
Neither ARorthopaedicGoniometer nor Sentio shows ads.
Which is updated more often, ARorthopaedicGoniometer or Sentio?
ARorthopaedicGoniometer ships an update every 10 months, and Sentio every 3 days. Most recently, ARorthopaedicGoniometer was updated on October 7, 2026 and Sentio on October 4, 2026.

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