Multiplier HD vs Orthopedic Mnemonics Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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-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.
Orthopedic Mnemonics Lite
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Orthopedic Mnemonics Lite is your pocket companion for mastering complex orthopedic concepts through simple, memorable mnemonics. Whether you're a medical student, resident, practicing physician, or healthcare professional, this app provides a comprehensive collection of orthopedic memory aids at your fingertips. Key Features: • Extensive library of orthopedic mnemonics across multiple categories • Smart search functionality to quickly find specific mnemonics (Only Pro version) • Category-based filtering for organized learning (Only Pro version) • Favorite system to bookmark your most-used mnemonics (Only Pro version) • Clean, intuitive interface optimized for quick reference • Detailed explanations for each mnemonic • Works offline - no internet connection required Perfect for: • Medical students preparing for exams • Orthopedic residents during rotations • Healthcare professionals seeking quick reference • Anyone studying orthopedic medicine Learning Made Simple: Each mnemonic comes with: • Clear explanation of the concept • Detailed breakdown of components • Category classification for context • Easy-to-understand descriptions Features for Efficient Learning: • Save favorites for quick access (Only Pro version) • Filter by categories to focus your study (Only Pro version) • Search through all fields (names, descriptions, and components) (Only Pro version) • Paginated view for smooth browsing • One-tap access to detailed explanations User-Friendly Design: • Modern, clean interface • Dark mode support • Responsive layout for all devices • Simple navigation • Quick-access favorites Whether you're cramming for an exam, preparing for rounds, or need a quick reference during practice, Orthopedic Mnemonics helps you recall crucial information when you need it most. Download now and transform the way you learn and remember orthopedic concepts!
Screenshots
Verdict
The clearest difference is ads: Multiplier HD at none against Orthopedic Mnemonics Lite's shown. Multiplier HD also leads on iOS requirement (8.0 vs 14.0). Orthopedic Mnemonics Lite's advantage is device support (3 vs 1). On price, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Multiplier HD ships an update every 7 months, Orthopedic Mnemonics Lite every 5 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Multiplier HD | Orthopedic Mnemonics Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 56 MB | 6 MB |
| Age rating | 12+ | 12+ |
| Developer | LifeBridge Health | Ahmad Al Hariri |
In-app purchases
Multiplier HD
No in-app purchases
Orthopedic Mnemonics Lite
No in-app purchases
Questions
Is Multiplier HD free?
Is Orthopedic Mnemonics Lite free?
Do Multiplier HD or Orthopedic Mnemonics Lite have ads?
Which is updated more often, Multiplier HD or Orthopedic Mnemonics Lite?
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