Comparison

Dr. Lex vs Vaidya AI

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Vaidya AI

Organize your medical records, track your health metrics, and receive personalized insights and reminders. This AI-powered companion offers a comprehensive approach to managing your well-being and understanding your health trends.

Highlights
  • Organized medical records (Medivault)
  • AI-generated health score
  • Activity and fitness tracking
  • Nutrition and meal logging
  • Smart reminders for health routines
  • AI health companion for questions
  • Personalized health goals
Features
Read full description

Your health deserves more than scattered reports and forgotten reminders. Vaidya brings it all together. Medivault: Your Medical Records, Finally Organized Upload lab reports, prescriptions, scans, and treatment records. Vaidya structures and summarizes them into a clean, organized Medivault where you can view trends across months, access plain-language explanations of medical terms and lab values, and drill down from high-level insights to individual biomarkers. A Health Score That Reflects Your Lifestyle Your health score is built from the data you track — steps, meals, hydration, and more. Explore breakdowns to understand what changed and what you can focus on next. As you log more, your score becomes more meaningful over time. Activity and Fitness Tracking Track steps and daily activity from your phone and connected wearables. Vaidya connects your activity trends with your overall health score and generates personalized recommendations that adapt as your habits change. Nutrition and Meal Tracking Log meals, hydration, and calories through chat or manual entry. Understand how your nutrition patterns connect to your health score and receive goal-based dietary suggestions personalized to your profile. Smart Reminders Set reminders for medications, lab appointments, and doctor visits. Stay consistent with your health routines without the mental overhead. AI Health Companion Ask Vaidya health-related questions and get clear, informational answers. Whether you need to understand a lab value, learn about a symptom, or explore general wellness topics, Vaidya is available 24/7. Vaidya provides health information for educational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare professional for medical concerns. Health Feed Discover curated health content, tips, and wellness insights tailored to your interests. Goals That Evolve With You AI-generated health goals adapt based on your tracked data and habits. As your health changes, your goals update automatically — keeping you focused on what matters most right now. Built for You and Your Family Create separate health profiles to track health for your loved ones. Designed for long-term use across months and years. Privacy by Design Your health data belongs to you. Secure storage, controlled access, and responsible data handling are built into the foundation. For more details, see our Privacy Policy: https://vaidya.ai/privacy Important Disclaimers • Vaidya AI is intended for general health information and wellness tracking only • It does not provide medical advice, diagnosis, or treatment • Always consult a licensed healthcare professional for medical concerns • Health score and recommendations are based on self-reported and tracked data and should not be used for clinical decisions

Screenshots

Dr. Lex4 screens
Vaidya AI4 screens

Verdict

The call

The clearest difference is review sentiment: Dr. Lex at 100% against Vaidya AI's 71%. Vaidya AI's advantage is update cadence (every 3 days vs every 3 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Dr. Lex ships an update every 3 weeks, Vaidya AI every 3 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Dr. Lex versus Vaidya AI: the parameters behind the verdict, then further details
ParameterDr. LexVaidya AI
PriceFreeFree
Rating4.0 (9 ratings) — better—
Positive reviews100.0% of reviews — better71.4% of reviews
Number of ratings9 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size86 MB75 MB
Age rating17+17+
DeveloperSYLEX SAFractal Analytics

Customer experience

Dr. Lex

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Vaidya AI

Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

In-app purchases

None

Dr. Lex

No in-app purchases

None

Vaidya AI

No in-app purchases

Questions

Is Dr. Lex free?
Dr. Lex is free to download, with no in-app purchases.
Is Vaidya AI free?
Vaidya AI is free to download, with no in-app purchases.
Do Dr. Lex or Vaidya AI have ads?
Neither Dr. Lex nor Vaidya AI shows ads.
Which is updated more often, Dr. Lex or Vaidya AI?
Dr. Lex ships an update every 3 weeks, and Vaidya AI every 3 days. Most recently, Dr. Lex was updated on October 24, 2026 and Vaidya AI on October 31, 2026.

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