Comparison

OrthoLine vs DiagnosUs

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

Head to head
About

OrthoLine

This app aids in the analysis of cephalograms, offering tools for measurements, various author-developed analysis systems, and visual treatment planning. Results can be viewed as tables or diagrams and exported as PDF files.

Highlights
  • Cephalogram analysis
  • Author's analysis systems
  • Visual Treatment Objective (VTO)
  • Measurement and diagram results
  • PDF export
  • Custom cephalogram upload
Read full description

The application will improve your knowledge in the analysis of a cephalogram. The program includes patients, who are available for conducting all the necessary measurements and analyzes. Each of the analysis systems has an accompanying file containing information about the system and the normal values of the measurements. There is an opportunity to add and analyze your own cephalograms for payment. You may mark points using iPencil on Ipad series Pro. There are author’s analysis systems available: Bjork-Jaraback, Downs, Hasund, Kim, McNamara, Ricketts, Sassouni Plus, Sato, Slavicek, Steiner, Tweed, Blum. In addition, there is a selection of measurements that allow to assess the posture, the type of growth pattern and the skeletal class. Visual treatment objective (VTO) - possibility to move mandible and teeth will help to plan treatment The obtained results can be viewed as a table and a visual diagram. The application also offers preliminary conclusions on a number of criteria based on the obtained results, the so-called "verbal analysis". In the part "author's analysis" you can get acquainted with the interpretation of the results proposed by the authors of the analysis systems. All results can be saved as a PDF file so it can be re-viewed, mailed, or opened in other applications on the Ipad.

About

DiagnosUs

Engage with real medical cases to enhance your diagnostic skills and earn rewards. This educational game is designed for students and professionals to test their knowledge across various specialties and contribute to AI research.

Highlights
  • Analyze diverse medical cases
  • Improve diagnostic skills
  • Earn rewards for participation
  • Contribute to AI research
  • Study for medical exams
  • Regularly updated datasets
Read full description

DiagnosUs is an educational game for medical students, doctors, premed students, other healthcare professionals, and citizen scientists to analyze medical cases, improve their skills, and earn prizes! Participation is open to anyone, regardless of educational background. Players compete against their peers to hone their skills by analyzing cases in our datasets. At the same time, they contribute their knowledge to help advance artificial intelligence research. DiagnosUs is a wonderful supplement for classes, clerkships, and in preparation for exams such as the USMLE® Step 1 & 2 Clinical Knowledge (CK), NBME® exams, MBBS, NCLEX® exams, COMLEX Level 1 & 2, MCAT®, NEET-PG, and many more! The app promotes an engaging, dynamic platform to test anyone’s medical knowledge while simultaneously contributing to the development of crucial machine learning algorithms. Try a wide range of cases in subjects such as radiology, dermatology, USMLE® preparation, MCAT® preparation, NBME® preparation, NCLEX® preparation, ultrasound, neurology, cardiology, ophthalmology, emergency medicine, surgery, internal medicine, pediatrics, orthopedics, family medicine, gastroenterology, pathology, and pulmonology. Utilize the power of DiagnosUs to study interactively! New datasets are added regularly, so players can always keep learning! Learn medicine fast: see a wide range of cases! - Anatomy - Physiology - Auscultation to listen for pulmonary abnormalities - Dermatological images to identify melanoma, basal cell carcinoma, squamous cell carcinoma, psoriasis, dermatitis, and other skin conditions - EEG - EKG / ECG - USMLE® practice questions - MCAT® practice questions - NBME® practice questions - Chest X-rays to look for pneumonia and cancer - Musculoskeletal X-rays - Ultrasound identification problems - Fundus eye images - MRI - Whole Slide Pathology Imagery - Chest CT - Mammograms and much more! The rewards that participants can earn in the app are made possible by our research partners and customers, who are developing artificial intelligence related to image analysis. These research partners and customers subsidize our prizes because our app participants help analyze images from large datasets of our research partners and customers. After participants win rewards, they can tap on the Profile tab and tap on the icon in the top-left corner of the Profile screen. This screen then shows a log of all the participant's rewards, and they can withdraw their rewards to a payment account.

Screenshots

DiagnosUs4 screens

Verdict

The call

The clearest difference is review sentiment: DiagnosUs at 79% against OrthoLine's 33%. DiagnosUs also leads on rating (4.8 vs 3.7) and in-app purchases (none vs 3). OrthoLine's advantage is iOS requirement (12.0 vs 16.0). On price, ads, monetization model and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OrthoLine sells 3 one-off in-app purchases. DiagnosUs asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

DiagnosUs holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: DiagnosUs has 1K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of OrthoLine's written reviews are positive against 79% of DiagnosUs's.

UpkeepUpdate frequency

OrthoLine ships an update every 3 months, DiagnosUs fortnightly. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
OrthoLine versus DiagnosUs: the parameters behind the verdict, then further details
ParameterOrthoLineDiagnosUs
PriceFreeFree
Rating3.7 (3 ratings)4.8 (1K ratings) — better
Positive reviews33.3% of reviews79.4% of reviews — better
Number of ratings31K — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS12.0 — better16.0
Further details — not scored
Size27 MB42 MB
Age rating17+17+
DeveloperAlexander RusakCentaur Labs

Customer experience

OrthoLine

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

DiagnosUs

All ratings1,015 ratings
Positive94.4%
Neutral1.9%
Negative3.7%
Written reviews228 reviews
Positive79.4%
Neutral10.1%
Negative10.5%

Bugs and requests

OrthoLine

Not enough reviews yet to summarise bugs or requests.

DiagnosUs

Reported bugs

4 issues
  • App crashes and freezes
  • Inaccurate or inconsistent grading of answers
  • Withdrawal and payment issues for some users
  • Compatibility problems with certain devices and OS versions

Requested features

5 requests
  • More diverse medical topics and case studies
  • Separate competitions for students vs. professionals
  • Ability to discuss and provide feedback on cases
  • Improved instructions and explanations
  • Compatibility with older devices and iOS versions

In-app purchases

3 purchases

OrthoLine

One-time3
  • add 1 cephalogram$3.99
  • add 5 cephalograms$16.99
  • add 10 cephalograms$29.99
None

DiagnosUs

No in-app purchases

Questions

Is OrthoLine free?
OrthoLine is free to download, with in-app purchases available.
Is DiagnosUs free?
DiagnosUs is free to download, with no in-app purchases.
Which has better reviews, OrthoLine or DiagnosUs?
DiagnosUs is rated higher. OrthoLine averages 3.7 out of 5 from 3 ratings, while DiagnosUs averages 4.8 from 1K ratings.
Do OrthoLine or DiagnosUs have ads?
Neither OrthoLine nor DiagnosUs shows ads.
Which is updated more often, OrthoLine or DiagnosUs?
OrthoLine ships an update every 3 months, and DiagnosUs fortnightly. Most recently, OrthoLine was updated on October 2, 2026 and DiagnosUs on October 15, 2026.

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