Comparison

CPUP Hip Score vs Bone Ninja Sensei

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

Head to head
About

CPUP Hip Score

This medical tool calculates the CPUP Hip Score, a metric used in a national quality register for individuals with cerebral palsy. It aims to optimize function and quality of life by preventing hip dislocation and contractures. The app provides background information and references to relevant scientific studies.

Highlights
  • CPUP Hip Score calculator
  • Background information on CPUP
  • Details on CPUP Hip Score variables
  • References to scientific studies
  • National quality register data
Features
Read full description

CPUP is a follow-up program and national quality register for people with cerebral palsy (CP). The program was initiated in southern Sweden in 1994 and since 2007 all of Sweden is engaged. The purposes of CPUP are: to prevent the occurrence of hip dislocation and severe contractures thereby optimizing function and increasing the quality of life for people with CP. to increase knowledge about CP and the effects of various treatment interventions. to increase collaboration between different professionals working with people with CP. The app contains a calculator to calculate CPUP Hip Score, background information on CPUP and the four variables in CPUP Hip Score, as well as references to the (own) scientific studies created CPUP Hip Score. The app is only aimed at the medical profession.

About

Bone Ninja Sensei

This educational tool, created by orthopedic surgeons, helps medical professionals learn to analyze long bone deformities. It provides tools for drawing, measuring, and simulating osteotomy solutions on provided or uploaded radiographs.

Highlights
  • Analyze long bone deformities
  • Radiograph analysis tools
  • Simulate osteotomy solutions
  • Upload custom radiographs
  • Drawing and measuring tools
  • Educational case examples
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. Terms of Use and Privacy Policy: https://www.lifebridgehealth.org/main/terms-of-use-and-privacy-policy

Screenshots

CPUP Hip Score2 screens

Verdict

The call

The clearest difference is rating: CPUP Hip Score at 5.0 against Bone Ninja Sensei's 3.7. CPUP Hip Score also leads on in-app purchases (none vs 1) and device support (3 vs 1). Bone Ninja Sensei's advantage is ratings volume (3 vs 1). On price, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bone Ninja Sensei sells 1 in-app purchase, starting at $14.99 per year. CPUP Hip Score asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CPUP Hip Score holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 14, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
CPUP Hip Score versus Bone Ninja Sensei: the parameters behind the verdict, then further details
ParameterCPUP Hip ScoreBone Ninja Sensei
PriceFreeFree
Rating5.0 (1 ratings) — better3.7 (3 ratings)
Positive reviews—25.0% of reviews
Number of ratings13 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS8.0 — better11.4
Further details — not scored
Size17 MB48 MB
Age rating17+4+
DeveloperGunnar HagglundLifeBridge Health

Customer experience

CPUP Hip Score

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bone Ninja Sensei

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

In-app purchases

None

CPUP Hip Score

No in-app purchases

1 purchases

Bone Ninja Sensei

Subscriptions1
  • Annual Subscription Plan1 Month trial$14.991 Year

Questions

Is CPUP Hip Score free?
CPUP Hip Score is free to download, with no in-app purchases.
Is Bone Ninja Sensei free?
Bone Ninja Sensei is free to download, with in-app purchases available.
Which has better reviews, CPUP Hip Score or Bone Ninja Sensei?
CPUP Hip Score is rated higher. CPUP Hip Score averages 5.0 out of 5 from 1 ratings, while Bone Ninja Sensei averages 3.7 from 3 ratings.
Do CPUP Hip Score or Bone Ninja Sensei have ads?
Neither CPUP Hip Score nor Bone Ninja Sensei shows ads.
Which is updated more often, CPUP Hip Score or Bone Ninja Sensei?
CPUP Hip Score ships an update every 3 months, and Bone Ninja Sensei every 3 months. Most recently, CPUP Hip Score was updated on September 14, 2026 and Bone Ninja Sensei on November 3, 2026.

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