Grey vs 99's Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Grey
This platform helps medical students study efficiently with organized question banks and an intuitive interface. It offers theoretical and practical learning, smart exam modes, and detailed explanations to prepare students for exams. Track your progress and personalize your study experience for confident exam preparation.
- Comprehensive medical question banks
- Theoretical and practical learning
- Smart exam modes
- Detailed explanations
- Performance analytics
- Personalized study experience
- Cloud synchronization
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Grey Matter is a modern medical education platform designed to help medical students study smarter, practice effectively, and prepare confidently for exams. The app combines organized theoretical and practical question banks with an intuitive learning experience, allowing students to review, practice, and monitor their progress in one place. Features include: • Comprehensive medical question banks • Theoretical and practical learning • Smart exam modes • Detailed explanations • Performance analytics and progress tracking • Bookmark important questions • Personalized study experience • Fast and intuitive interface • Secure cloud synchronization • Regular content updates Grey Matter is developed to support medical education with a clean, reliable, and efficient learning environment for students and healthcare learners.
99's Guide
A medical study companion for University of Baghdad College of Medicine students. Access study materials, subject resources, and tests in an organized and efficient way to support your academic journey.
- Medical study materials
- Subject resources
- Tests
- Student information
- Organized interface
- Efficient studying
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99’s Guide is a dedicated medical study companion designed for students of the College of Medicine, University of Baghdad. Everything you need for your academic journey, thoughtfully organized in one place. Access your study materials, subject resources, tests, and student information through a simple and organized experience. Designed to make studying more accessible, structured, and efficient — so you can focus on what truly matters: your medical journey. Developed by Mustafa Yasir & Mustafa Samad
Screenshots
Verdict
The clearest difference is update cadence: 99's Guide at every 2 days against Grey's every 5 weeks. On price, rating, ratings volume and ads 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.
On the App Store both sit at effectively the same score — 5.0 for Grey against 5.0 for 99's Guide. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
Grey ships an update every 5 weeks, 99's Guide every 2 days. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.
| Parameter | Grey | 99's Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 5 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 97 MB | 17 MB |
| Age rating | 4+ | 12+ |
| Developer | Saifuldeen Al-Bajjari | MUSTAFA SAMAD |
Customer experience
Grey
99's Guide
In-app purchases
Grey
No in-app purchases
99's Guide
No in-app purchases
