Comparison

Bone Ninja vs Colgate StuDENT

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

Head to head
About

Bone Ninja

This educational tool helps orthopedic surgeons learn to analyze and correct long bone deformities using digital radiographs. It provides tools for measurement, drawing, and simulating osteotomy solutions, based on established surgical methodology.

Highlights
  • Radiograph analysis of bone deformities
  • Digital measurement and drawing tools
  • Osteotomy simulation with cut-out tool
  • Upload and analyze personal radiographs
  • Comparison with suggested correction solutions
  • Educational tool based on established methodology
Features
Read full description

Bone Ninja is a teaching tool developed by two orthopedic surgeons who specialize in limb deformity correction: Dr. Shawn Standard and Dr. John Herzenberg. It is designed to help surgeons learn to analyze long bone deformities. Bone Ninja comes pre-loaded with radiographs of normal legs and deformed legs. You can analyze the provided cases or upload your own. Once your analysis is complete, you can then use the cut-out tool to try different osteotomy solutions. Suggested solutions for the provided cases are available for comparison. Bone Ninja includes tools for drawing lines, measuring angles, measuring lengths, and calibrating the magnification. The cutting tool allows you to manipulate one or more fragments to simulate correction of single or multilevel deformities. The analysis of the radiographs is based on methodology taught at our annual Baltimore Limb Deformity Course (BLDC), now in its 22nd year (DeformityCourse.com). We developed this app to supplement the BLDC and look forward to feedback from attendees and other users. Bone Ninja is not presented as a clinical tool, but rather an educational tool. It will not “automatically” analyze deformities. The student must first learn the methodology of analyzing and planning deformity correction in order to use Bone Ninja. Bone Ninja is a 21st century mobile alternative to pencil, ruler, goniometer, and paper. Bone Ninja will be periodically updated by adding more case examples, more explanations, and more tools. The name “Bone Ninja” is intentionally whimsical and reflects our philosophy of teaching as “infotainment.” Enjoy! Disclaimer The Bone Ninja App is designed for educational purposes only. The intent is to train physicians how to analyze long bone deformities. The Bone Ninja App is not intended to be used for medical diagnosis or treatment. In view of the possibility of human error or changes in medical science, neither the authors nor the developer warrant that the information contained in this software is accurate or complete and they are not responsible for any errors or omissions or the results obtained from the use of such information.

About

Colgate StuDENT

This app helps aspiring dentists learn and practice essential skills. It offers interactive games, videos, and quizzes on dental procedures, trends, and practice management, supported by reputable dental institutions.

Highlights
  • Interactive learning modules
  • Engaging games and quizzes
  • Short educational videos
  • Infographics on dental topics
  • Practice management content
  • Content from leading dental institutions
Features
Read full description

So, you are going to be a dentist! There’s an app just for you! The new Colgate StuDENT App supports you in becoming a talented and skilled dental professional. Learn, play and connect 24/7 with a trusted, interactive and evidence-based resource right at your fingertips. Learn about dental procedures, trends and innovations in dentistry, practice management, volunteering and much more through engaging games, short videos infographics and quizzes. Credible and well known partners for the content such as Forsyth, UPenn, the University of Manchester, Columbia University, University of Adelaide, Hu-Friedy, Mental Dental, Loocid LLC and the Alliance for Oral Health Across Borders.

Screenshots

Colgate StuDENT4 screens

Verdict

The call

The clearest difference is review sentiment: Bone Ninja at 90% against Colgate StuDENT's 0%. Bone Ninja also leads on rating (4.7 vs 4.2) and iOS requirement (8.0 vs 15.0). Colgate StuDENT's advantage is price (Free vs $49.99) and update cadence (every 2 months vs every 4 months). On ratings volume, ads and in-app purchases 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

Colgate StuDENT is free to download; Bone Ninja costs $49.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Bone Ninja holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews point the same way: 90% of Bone Ninja's written reviews are positive against 0% of Colgate StuDENT's.

UpkeepUpdate frequency

Bone Ninja ships an update every 4 months, Colgate StuDENT every 2 months. The most recent releases landed on June 4, 2026 and August 1, 2026 respectively.

Scorecard7 real differences · 3 level
Bone Ninja versus Colgate StuDENT: the parameters behind the verdict, then further details
ParameterBone NinjaColgate StuDENT
Price$49.99Free — better
Rating4.7 (3 ratings) — better4.2 (5 ratings)
Positive reviews90.0% of reviews — better0.0% of reviews
Number of ratings35 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS8.0 — better15.0
Further details — not scored
Size34 MB162 MB
Age rating4+12+
DeveloperLifeBridge HealthColgate-Palmolive Company

Customer experience

Bone Ninja

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral10.0%
Negative0.0%

Colgate StuDENT

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Bone Ninja

No in-app purchases

None

Colgate StuDENT

No in-app purchases

Questions

Is Bone Ninja free?
Bone Ninja costs $49.99, with no in-app purchases.
Is Colgate StuDENT free?
Colgate StuDENT is free to download, with no in-app purchases.
Which has better reviews, Bone Ninja or Colgate StuDENT?
Bone Ninja is rated higher. Bone Ninja averages 4.7 out of 5 from 3 ratings, while Colgate StuDENT averages 4.2 from 5 ratings.
Do Bone Ninja or Colgate StuDENT have ads?
Neither Bone Ninja nor Colgate StuDENT shows ads.
Which is updated more often, Bone Ninja or Colgate StuDENT?
Bone Ninja ships an update every 4 months, and Colgate StuDENT every 2 months. Most recently, Bone Ninja was updated on June 4, 2026 and Colgate StuDENT on August 1, 2026.

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