Comparison

My Knee Guide vs Primal's 3D Knee

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

Head to head
About

My Knee Guide

This app provides a personalized guide for individuals undergoing knee replacement surgery. It offers a customizable calendar with reminders, educational resources, and a directory of healthcare providers and facilities with ratings. Users can also find support through shared patient stories.

Highlights
  • Personalized surgery calendar
  • Safety notifications and reminders
  • Directory of healthcare providers and facilities
  • Patient ratings and safety information
  • Educational content on knee arthritis and treatment
  • Animated x-ray visualizations of surgery
  • Pre- and post-operative checklists
Features
Read full description

My Knee Guide is an interactive and comprehensive resource for patients considering and undergoing knee replacement surgery. We provide you with an unprecedented ability to customize your experience. Simply by providing My Knee Guide a couple of key dates, a personalized and customizable list of calendar events are created. This calendar, created by an orthopaedic surgeon, will present you with timely safety notifications, education, checklists, and surgery specific reminders. This calendar will help you prepare for your surgery and will follow you all the way through your recovery. My Knee Guide utilizes push notifications or email alerts to keep you up to date. You can also sync this timeline with the internal iPhone calendar. When you access the “Contacts” section of My Knee Guide, you will see that we go well beyond the typical physician locator. We help you find all the resources needed during knee replacement. This includes hospitals, in-patient rehabilitation facilities, home health care services, medical suppliers and more. We present surveys, ratings, and safety information about these facilities to help you compare these resources and receive the best care. You can find out: what percentage of patients recommend your local hospital, the health inspections rating for the in-patient rehabilitation you’re considering, the percentage of patients who believe their chosen home health care agency communicated well with them, along with much more. Once you find and choose these resources, My Knee Guide will help you organize them in one central knee replacement address book. You can also customize this address book by importing and exporting from your own iPhone contacts. The Learning center provides educational tools and references for both non-operative and operative treatment options. By utilizing conversational style text, pictures, and videos, you can get a broader understanding of the nature of knee arthritis and how an orthopaedic surgeon can help treat it. The learning center has been created with an emphasis on evidence based medicine, and real world experience. Have you wondered how arthritis can cause the knee to become crooked or how surgery can correct this? With our unique x-ray vision center, we present animated images of real patients during their progress from arthritis through knee replacement surgery. These animations will help you visualize this process as you have never experienced before. My knee Guide’s extensive checklists keep you organized and informed around the time of surgery. What questions should you ask when selecting an orthopaedic surgeon? What do you need to know at your pre-operative visit? Bring your iPhone to your surgeon’s office and know that you are always prepared. The Stories section of My Knee Guide allows you to read the experiences of others who have dealt with the difficulties of knee arthritis. It also presents the stories of their recovery and return to life. By posting your own story or comments, you can empower other individuals who are going through this process just like you. All the medical content in My Knee Guide has been created by a full time practicing, board certified orthopedic surgeon. My Knee Guide was built from the ground up always asking, “How can we help patients during their journey through knee replacement surgery.” Utilizing the unique perspective of an orthopaedic surgeon, My Knee Guide can better educate, organize, and simplify this experience.

About

Primal's 3D Knee

Features
Read full description

Primal's 3D Real-time Human Anatomy app for the Knee is the ultimate 3D interactive anatomy viewer for all medical educators, practitioners and students. Meticulously built over ten years from high-resolution cross-sectional photographs of real cadavers, the app provides an accurate and visually stunning reconstruction of the anatomy of the knee. The easy to use and intuitive interface lets you choose precisely the anatomy you want to see, from exactly the angle you want to see it. This flexibility is supported by a wealth of user-friendly tools to help you set up your ideal anatomical image, quickly and easily: • The Gallery contains 9 pre-set scenes, designed by an in-house team of anatomical experts, to clearly and comprehensibly present in-depth regional and systemic anatomy of the knee. Each scene is divided into five layers to provide greater control over the depth of anatomy shown; making tailoring the anatomy you want to see simple and quick. • The Contents folders arrange all 225 structures systemically, meaning you can browse by subcategory and switch all related structures on at once. It provides an excellent learning tool – for example turn on all branches of the popliteal artery, or the muscles of the lateral compartment of the leg. • The Contents layer controls split each system into five layers – from deep to superficial. This allows you to quickly build up different systems to the depth you want to see. **Save to Favourites** Save the views you create for later in the Favourites, save anything as an image, or share with another user as a URL link. Use the pins, labels and drawing tools to customize your images for enlivened presentations, engaging course materials and handouts – all from your iPad! **Informative** Read detailed and accurate text for each structure using the T icon, and in a feature unique to Primal Pictures, each anatomical term in the text is linked to the appropriate model in the 3D model. Selecting these links will highlight the relevant structures, bringing the text to life and make learning anatomy more visual and immediate. **Context** See each structure in context with the anatomy that surrounds it. Explore these relationships and easily navigate to related anatomical structures to expand your learning. Select a field name in the right-hand menu to show the anatomical category and sub-category of the structure for added understanding and simple navigation. **Technical Specifications** iPad 3 and above only. iPad Air and above for optimal viewing. iPhone 6 and above for best performance.

Screenshots

My Knee Guide4 screens
Primal's 3D Knee4 screens

Verdict

The call

The clearest difference is in-app purchases: My Knee Guide at none against Primal's 3D Knee's 1. My Knee Guide also leads on iOS requirement (6.1 vs 15.0). On price, update cadence, ads and device support 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. Primal's 3D Knee sells 1 one-off in-app purchase. My Knee Guide asks for nothing beyond the download.

UpkeepUpdate frequency

My Knee Guide ships an update every 6 weeks, Primal's 3D Knee every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
My Knee Guide versus Primal's 3D Knee: the parameters behind the verdict, then further details
ParameterMy Knee GuidePrimal's 3D Knee
PriceFreeFree
Rating4.4 (70 ratings) — better—
Positive reviews84.9% of reviews—
Number of ratings70 — better—
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS6.1 — better15.0
Further details — not scored
Size53 MB125 MB
Age rating4+12+
DeveloperEmpire Digital, LLCPharma Intelligence UK Ltd

Bugs and requests

My Knee Guide

Reported bugs

6 issues
  • App won't open
  • Cannot log in
  • Cannot create an account
  • Cannot sign in as guest
  • Account doesn't exist error
Show 1 more
  • Cannot enter customized dates

Requested features

3 requests
  • Add website registration prompt on opening page
  • Specify frequency for exercises
  • Mention importance of straightness in exercises

Primal's 3D Knee

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

My Knee Guide

No in-app purchases

1 purchases

Primal's 3D Knee

One-time1
  • Primal's 3D Knee$39.99

Questions

Is My Knee Guide free?
My Knee Guide is free to download, with no in-app purchases.
Is Primal's 3D Knee free?
Primal's 3D Knee is free to download, with in-app purchases available.
Do My Knee Guide or Primal's 3D Knee have ads?
Neither My Knee Guide nor Primal's 3D Knee shows ads.
Which is updated more often, My Knee Guide or Primal's 3D Knee?
My Knee Guide ships an update every 6 weeks, and Primal's 3D Knee every 2 months. Most recently, My Knee Guide was updated on October 29, 2026 and Primal's 3D Knee on October 25, 2026.

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