Dr. Lex vs Digi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dr. Lex
This interactive simulator trains medical professionals and students in advanced diagnostic skills using virtual patients and AI-powered decision support. Analyze cases, solve quizzes, and compete with others to sharpen your medical expertise.
- Virtual patient diagnosis simulator
- AI clinical decision support
- Interactive quizzes and difficulty levels
- Competition events and rankings
- Analysis of text and voice dictation cases
- Reasoning for diagnostic suggestions
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Dr. Lex is an interactive virtual patient diagnosis simulator and augmented intelligence clinical decision support platform. It is designed for medical professionals and students to help in training advanced diagnostic skills by applying the most engaging methodologies. Members solve quizzes, unlock difficulty levels, participate in competition events, earn score points and get ranked based on results. The AI diagnostic decision support tool allows medical specialists and students to analyze medical cases provided in unstructured text format and voice dictation. All suggestions are provided with appropriate reasonings for users to learn and sharpen their diagnostic skills. The underlying medical knowledge of Dr. Lex is based on publicly available published statistical data, medical articles and summarized national e-health databases. CAUTION The services in the app are intended exclusively for healthcare professionals. Those services shall not be used by patients or non-healthcare professionals for diagnosis or any other purposes. DISCLAIMER Dr. Lex cannot provide medical diagnosis. All services are intended for informational purposes only. Healthcare professionals must use their own discretion when making diagnosis decisions.
Digi
Practice diagnostic reasoning with simulated patient cases. Make informed decisions on diagnostic tests and patient management, comparing your efficiency and cost to experienced clinicians. Learn from feedback and access relevant literature.
- Simulated patient cases
- Diagnostic test selection
- Patient management choices
- Cost comparison to experts
- Clinical feedback
- Hyperlinks to literature
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This app is designed for early clinicians to practice using diagnostic testing to arrive at a simulated patient's diagnosis. Patient histories are provided - the goal of playing is to choose diagnostic tests to get to the right diagnosis as efficiently as possible. Each test accrues additional expense, and users can compare their costs to that of the experienced clinician. Just as in real life, making incorrect choices still provides valuable learning as feedback from experienced clinicians follows diagnosis selections. In addition, some cases will also provide opportunity for making choices in patient management, with clinical feedback provided for all selections. Hyperlinks to relevant literature are included for easy access to further information. Once diagnosis is made, users will have opportunity to provide specific feedback through a survey link - we hope you'll fill it out and help faculty make this as useful a learning tool as possible! This app was built through a partnership between Jump Simulation and faculty from the University of Illinois College of Medicine.
Screenshots
Verdict
The clearest difference is review sentiment: Dr. Lex at 100% against Digi's 0%. Dr. Lex also leads on rating (4.0 vs 3.7) and update cadence (every 3 weeks vs every 2 months). Digi's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dr. Lex holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews point the same way: 100% of Dr. Lex's written reviews are positive against 0% of Digi's.
Dr. Lex ships an update every 3 weeks, Digi every 2 months. Both last shipped on November 3, 2026.
| Parameter | Dr. Lex | Digi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (9 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 9 — better | 3 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 86 MB | 95 MB |
| Age rating | 17+ | 12+ |
| Developer | SYLEX SA | OSF Healthcare System |
Customer experience
Dr. Lex
Digi
In-app purchases
Dr. Lex
No in-app purchases
Digi
No in-app purchases







