World's Key vs MedMasters
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
World's Key
This interactive educational app offers audio-visual lessons and exercises for English and Science curricula for Kindergarten and Primary levels. Students can access engaging content and assessments through an online account, supplementing their printed books.
- Interactive audio-visual lessons
- English and Science curricula
- Kindergarten and Primary levels
- Interactive exercises
- Assessments for lessons
- Online account access
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World's Key application is an interactive educational application for a set of curricula for Kindergarten and Primary Levels in the English language and Science. In our schools, each student receives and uses printed books in his/her class in addition to an online account to access the mentioned application. This application provides students with audio-visual lessons in addition to conducting interactive exercises and assessments to all lessons in both subjects- English and Science. There is no paid services or content. Each student at our schools has a passcode that allow him to access the App content (videos about the lesson and some additional exercises)
MedMasters
Access a diverse range of medical courses created by various instructors. Learn at your own pace or share your expertise by publishing your own educational content. The platform provides tools for course creation, marketing, and sales.
- Wide selection of medical courses
- Learn at your own pace
- Publish your own courses
- Tools for course creation
- Course marketing and sales support
- Community of students and educators
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MedMasters offers a wide selection of courses from various creators, allowing you to explore and learn at your own pace. As a lecturer, you can share your knowledge and expertise with an audience by publishing your own courses on our app. We provide all the tools you need to easily create, market, and sell your courses. Join our community of students and educators today!
Screenshots
Verdict
The clearest difference is in-app purchases: World's Key at none against MedMasters's 21. World's Key also leads on ads (none vs shown) and review sentiment (55% vs 26%). MedMasters's advantage is update cadence (every 2 days vs every 8 days) and rating (4.1 vs 3.8). On price, ratings volume, device support and iOS requirement 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. MedMasters sells 21 one-off in-app purchases. World's Key asks for nothing beyond the download.
MedMasters holds the better App Store score, 4.1 against 3.8. Both are backed by a comparable volume of ratings — 316 and 739 respectively. Written reviews complicate that: 55% of World's Key's written reviews are positive against 26% of MedMasters's, so the app with the better star average is not the one people write more warmly about.
World's Key ships an update every 8 days, MedMasters every 2 days. Both last shipped on October 21, 2026.
| Parameter | World's Key | MedMasters |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (316 ratings) | 4.1 (739 ratings) — better |
| Positive reviews | 54.5% of reviews — better | 26.5% of reviews |
| Number of ratings | 316 | 739 — better |
| Update frequency | Every 8 days | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 66 MB |
| Age rating | 4+ | 12+ |
| Developer | Mohammad Bzeih | Baims |
Customer experience
World's Key
MedMasters
User reviews
World's Key
From 316 App Store ratingsWhat we love
- 👍 Educational value for students
- 😍 Highly praised by young students
- 👍 Useful for international schools
- 👍 Good content for learning
- 👍 App is beneficial for international students
Room to improve
- 😡 App is very slow
- 😡 App crashes frequently
- 😡 App is not user-friendly
- 😡 App is old and outdated
- 😡 App is heavy and lags
MedMasters
From 739 App Store ratingsWhat we love
- 👍 Very useful application
- 👍 Good application
- 👍 The best
- 👍 Very good application
Room to improve
- 🐛 Slow loading
- 🐛 App is heavy
- 🐛 Videos don't load
- 🐛 Videos are very slow to download
- 🐛 Needs very strong internet
Bugs and requests
World's Key
Reported bugs
6 issues- App logs out when accessing videos
- App freezes and doesn't calculate views
- App has errors in exam time calculation
- App doesn't open
- App crashes when opening or solving lessons
Show 1 moreShow fewer
- App doesn't show views or solutions
Requested features
5 requests- Add video playback speed control
- Improve app's responsiveness and speed
- Continuous improvement and development of the app
- Fix bugs and glitches
- Update the app to be more modern
MedMasters
Reported bugs
7 issues- Code not received on WhatsApp
- New update is very annoying
- When exiting the app, the playing content stops
- When returning to the app, it exits the video
- Server issues
Show 2 moreShow fewer
- App doesn't work on Huawei
- Video playback control needs improvement
Requested features
7 requests- Application on Macbook
- Download lectures feature
- Application on computer
- Allow displaying on other screens
- Download videos feature
Show 2 moreShow fewer
- Download lectures
- Download feature
In-app purchases
World's Key
No in-app purchases
MedMasters
- Course Tier 1$0.99
- Course Tier 2$1.99
- Course Tier 6$5.99
Show 18 moreShow fewer
- Course Tier 7$6.99
- Course Tier 8$7.99
- Course Tier 9$8.99
- 5000 Coins$9.99
- Course Tier 10$9.99
- Course Tier 12$11.99
- 12000 Coins$19.99
- 18000 Coins$29.99
- Course Tier 76$239.99
- Course Tier 77$249.99
- Course Tier 79$349.99
- Course Tier 81$449.99
- Course Tier 82$499.99
- Course Tier 83$599.99
- Course Tier 84$699.99
- Course Tier 85$799.99
- Course Tier 86$899.99
- Course Tier 87$999.99
