Comparison

LENS Connected Tower App 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

LENS Connected Tower App

Control LENS HD/4K cameras and surgical equipment remotely. Capture, annotate, and generate custom PDF reports of surgical images and videos. Enables operation outside the sterile field.

Highlights
  • Remote camera control
  • Surgical equipment control
  • Image and video storage
  • Voice, text, drawing annotations
  • Custom PDF report generation
  • Print and email reports
Features
Read full description

LENS Connected Tower App provides remote control of settings the LENS HD or LENS 4K camera settings as well as DYONICS◊ Power II, WEREWOLF◊ Coblation and DOUBLEFLO◊ Pump outside the sterile field, including: • View of settings on the arthroscopic display (optional) • Storage of surgical images and video • Create voice, text or drawing annotations • Generate customized .pdf reports • Print and email reports For best experience, please ensure to enable Location Services (General Settings | Privacy) on iPadOS 13 and above.

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

Verdict

The call

The clearest difference is rating: LENS Connected Tower App at 4.6 against Bone Ninja Sensei's 3.7. LENS Connected Tower App also leads on in-app purchases (none vs 1). Bone Ninja Sensei's advantage is review sentiment (25% vs 0%) and update cadence (every 3 months vs every 7 months). On price, ratings volume, 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. Bone Ninja Sensei sells 1 in-app purchase, starting at $14.99 per year. LENS Connected Tower App asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LENS Connected Tower App holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews complicate that: 0% of LENS Connected Tower App's written reviews are positive against 25% of Bone Ninja Sensei's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

LENS Connected Tower App ships an update every 7 months, Bone Ninja Sensei every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
LENS Connected Tower App versus Bone Ninja Sensei: the parameters behind the verdict, then further details
ParameterLENS Connected Tower AppBone Ninja Sensei
PriceFreeFree
Rating4.6 (5 ratings) — better3.7 (3 ratings)
Positive reviews0.0% of reviews25.0% of reviews — better
Number of ratings5 — better3
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPad
Requires iOS11.0 — better11.4
Further details — not scored
Size252 MB48 MB
Age rating12+4+
DeveloperSmith & NephewLifeBridge Health

Customer experience

LENS Connected Tower App

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

LENS Connected Tower App

No in-app purchases

1 purchases

Bone Ninja Sensei

Subscriptions1
  • Annual Subscription Plan1 Month trial$14.991 Year

Questions

Is LENS Connected Tower App free?
LENS Connected Tower App 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, LENS Connected Tower App or Bone Ninja Sensei?
LENS Connected Tower App is rated higher. LENS Connected Tower App averages 4.6 out of 5 from 5 ratings, while Bone Ninja Sensei averages 3.7 from 3 ratings.
Do LENS Connected Tower App or Bone Ninja Sensei have ads?
Neither LENS Connected Tower App nor Bone Ninja Sensei shows ads.
Which is updated more often, LENS Connected Tower App or Bone Ninja Sensei?
LENS Connected Tower App ships an update every 7 months, and Bone Ninja Sensei every 3 months. Most recently, LENS Connected Tower App was updated on November 6, 2026 and Bone Ninja Sensei on November 3, 2026.

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