Comparison

Multiplier HD vs Inside Joint

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

Head to head
About

Multiplier HD

This medical app automates complex calculations for predicting a child's mature height and bone length. It offers a comprehensive suite of tools for limb length discrepancy, growth remaining, and skeletal age determination, reducing calculation time and potential errors for healthcare professionals.

Highlights
  • Predict mature height and bone length
  • Calculate limb length discrepancy
  • Estimate growth remaining
  • Analyze achondroplasia and fetal growth
  • Perform scanogram calculations
  • Determine skeletal age via radiographs
  • Access medical figures and bibliographies
Features
Read full description

-The Multiplier App automates calculations to predict mature height and bone length in children. This method was created originally in Baltimore at the University of Maryland, and subsequently developed at the International Center for Limb Lengthening (ICLL), Rubin Institute for Advanced Orthopedics (RIAO), Sinai Hospital of Baltimore. -We have taught the Multiplier Method for more than 19 years at our annual Baltimore Limb Deformity Course (www.DeformityCourse.com). These calculations are typically performed by hand, using various formulae. Certain calculations are easy, but others involve more complicated formulae. Utilizing this app will reduce the time needed for these routine calculations and decrease errors. You need only input certain data (sex, age, length) and the app will calculate the answer by using the appropriate Multiplier formula. The Multiplier App will allow you to make the following calculations: • Lower Extremity - Limb Length Discrepancy (LLD) (Congenital) - LLD (Developmental) - Growth Remaining - Bone Length - Timing of Angular Correction - Timing of Epiphysiodesis - Comprehensive (Congenital) LLD and Epiphysiodesis -Scanogram Calculations (calculates femur/tibia lengths, overall limb length discrepancy, and amount/side of femur/tibia discrepancies) • Upper Extremity - LLD (Congenital) - LLD (Developmental) - Growth Remaining - Bone Length • Height and CDC Growth Charts (calculates height at maturity, calculates height at every age, and plots the patient’s height and weight on the CDC growth charts) • Achondroplasia - Height - Sitting Height - Leg Length • Fetus (calculates the length of tibia or femur at birth and maturity) • Foot - Foot Length - Foot Length Discrepancy • Spine (calculates sitting height at maturity) • Oblique Plane Deformity (calculates magnitude, orientation, and direction of an oblique plane deformity) • Inclined Osteotomy (calculates the rotational orientation and the vertical inclination of the osteotomy) This app also provides the following additional resources: -Bone Age: Elbow and Hand (shows how to determine skeletal age by using radiographs of the elbow or hand) -Figures that show the standard measurements for the lower limb and foot -The multiplier formulae that the app uses to perform the calculations -Tables that show the multiplier values that are used in the formulae -Figures that show the Solomin Foot Analysis (deformity correction planning for the midfoot, hindfoot, and ankle using reference lines and angles provided by Dr. Leonid Solomin) -Figures that show the development of the apophyses, epiphyses, and bones -Bibliography -User guide Disclaimer: No growth prediction method is 100% accurate; this App is not a substitute for sound and careful clinical judgment. Privacy Policy: We respect the privacy of the people who use International Center for Limb Lengthening apps. The Multiplier app does not collect, use or distribute any data from the users.

About

Inside Joint

Features
Read full description

Inside Joint is a mobile application is intended for informational and educational purposes only. It's not intended for diagnosis of disease or other condition. Health care providers should exercise their own independent clinical judgment when using the app in conjunction with patient care. Inside Joint is a mobile application developed by Fidia Pharma Middle east F.Z.E. for healthcare professionals who are currently using or planning to use intra-articular hyaluronic acid Injections. It contains instructions on how to make the injection procedure in different joints, videos of injection procedures, and scientific evidence supporting the use of Fidia’s IAHA portfolio in different joints. More information on Fidia’s IAHA products are available on the application Inside Joint is a dynamic content management system app where re healthcare professionals are update with the latest scientific trends in using intra-articulations injections. Moreover, during the events/conferences a push notifications feature is enabled where the healthcare professionals receive and respond to questionnaire related to topics demonstrated in the events/conferences.inside Joint is a mobile application developed by Fidia Pharma Middle east F.Z.E. for healthcare professionals who are currently using or planning to use intra-articular hyaluronic acid Injections. It contains instructions on how to make the injection procedure in different joints, videos of injection procedures, and scientific evidence supporting the use of Fidia’s IAHA portfolio in different joints. More information on Fidia’s IAHA products are available on the application.

Screenshots

Inside Joint4 screens

Verdict

The call

The clearest difference is device support: Inside Joint at 3 against Multiplier HD's 1. Multiplier HD's advantage is iOS requirement (8.0 vs 13.0). On price, update cadence, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Multiplier HD ships an update every 7 months, Inside Joint every 12 months. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Multiplier HD versus Inside Joint: the parameters behind the verdict, then further details
ParameterMultiplier HDInside Joint
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 7 months — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS8.0 — better13.0
Further details — not scored
Size56 MB32 MB
Age rating12+17+
DeveloperLifeBridge HealthFidia Pharma Middle East

In-app purchases

None

Multiplier HD

No in-app purchases

None

Inside Joint

No in-app purchases

Questions

Is Multiplier HD free?
Multiplier HD is free to download, with no in-app purchases.
Is Inside Joint free?
Inside Joint is free to download, with no in-app purchases.
Do Multiplier HD or Inside Joint have ads?
Neither Multiplier HD nor Inside Joint shows ads.
Which is updated more often, Multiplier HD or Inside Joint?
Multiplier HD ships an update every 7 months, and Inside Joint every 12 months. Most recently, Multiplier HD was updated on November 1, 2026 and Inside Joint on October 27, 2026.

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