***** DON'T MISS! - Number 1 Free Medical iPad app in over 95 countries worldwide
***** NEW anatomical models that have more detail and take less processing power
***** Groundbreaking 3D Technology - No competitor competes with graphics and medical accuracy
***** Compatible with iPad 2, new iPad (3rd generation), iPad 4, iPad mini, iPhone 4S, iPhone 5 and iPod 5th generation and newer

Essential Skeleton 4 is a fully functional, self-contained app covering the essential anatomy of the skeleton. This app is being offered free to demonstrate the groundbreaking 3D technology and innovative design inherent in 3D4Medical's new range of apps.

3D4Medical have developed a cutting edge 3D graphics engine designed specifically to maximize what can be done with anatomical models in the mobile and Mac environment.

Now 3D4Medical have also created custom built anatomical models which have been built from the ground up specifically for the proprietary 3D Display engine. The result is unparalleled graphics and functionality.
It is a stand alone app and does not contain any in-app purchase requirements.

We encourage you to download this app, as well as the free version of any competitor's app. Compare and decide for yourself which is better in terms of 3D models, functionality, medical accuracy and ease of use. Afterwards, let us know -- we'd love to hear from you!

Essential Skeleton 4 is responsive, visually stunning and effortless. The app is fully 3D, meaning that you can easily manipulate the skeleton and individual bones, as well as view them in isolation from any angle. Our new Multiple Selection Mode allows you to select multiple bones and isolate, hide or fade them.

- New 3D technology via 3D4Medical's latest graphics engine.
- Simple navigation and user friendly, intuitive interface.
- Pin feature: Create customized pins with notes and place anywhere on the 3D model.
- Correct audio pronunciation, Latin nomenclature and description for each bone.
- Select areas or the entire skeletal system using the Breadcrumb Trail.
- Multiple Selection Mode.
- Create and save custom views with Bookmarks.
- Multiple search options.
- Dynamic quiz function - Drag and Drop and Multi-choice.
- Extensive social media tools and sharing capability.

We take pride in our apps at 3D4Medical and continually strive to engage with our customers. From the first edition of Muscle System Pro, we have consistently listened to our users and upgraded our apps, continually and throughout.

Email us via the App Feedback address below to engage with our development process:

Also please watch the help videos using this link:

What’s New

Version 4.5.2

Added support for iPhone X

Ratings and Reviews

4.7 out of 5
2.3K Ratings
2.3K Ratings
Jaleeleo ,

Honestly... This is the best free app, ever!

This app is extremely useful compared to other apps that I’ve tried using to learn the skeletal structure. Though, it doesn’t list EVERY SINGLE small detail that my text book would, it still is incredibly useful and accurate. Moreover, I love the features that it comes with. I love how you can isolate the bone(s) of interest, fade other bones, take notes, get more info, quiz yourself, and much more in order to learn the material.
The only cons I’ve came across is typing a word and the structure of interest isn’t available (but maybe it has a different name I’m not aware of). Secondly, it doesn’t list the foramen(s) that I’m interested in. But that’s no issue Google didn’t solve.
I would recommend this app for anyone who is trying to learn more about the skeletal system. I’m currently taking A&P 1 and this app is extremely helpful, especially when I don’t feel like bringing my heavy textbooks around. I will be using this app in A&P 2 next semester. I can’t wait. 🙂🙂 Best free app I’ve ever used.

Galincik ,

Can’t believe it’s free!!!! 🤗

This is such an amazing app. This is what you’ve been looking for if your an anatomy and physiology student! You can rotate to see 3D and see where bones articulate with each other. You can zoom in really close. I’m most likely going to purchase the muscle one. God bless you great people when made this app. Literally open lab in your phone. There are no labels to things, so use your own atlas. It would also be great if they had a test version where they give a random bone and we have to identify right or left and certain anatomical landmarks.

MimiRDH ,

Great learning tool

I teach Head & Neck Anatomy and I think this is a great adjunct tool to learning. The images are 3D and allow you to turn the body part around. You can isolate bones and an explanation of the bone pops up along with the areas that it articulated with. You can dim the rest of the body and view a particular bone in the depths of the body (for example the sphenoid bone in the skull) and get a better understanding of its structure and function. Well done!


153.1 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014,, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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