Comparison

Derm DDx vs Bone Age Height Predictor

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

Head to head
About

Derm DDx

This app provides visual, point-of-care guidance for diagnosing skin disorders. It features a large database of high-resolution images, allowing users to compare variations, zoom in, and access clinical history and treatment options for over 160 dermatologic conditions.

Highlights
  • 650+ high-quality dermatology images
  • Guidance for 160+ dermatologic conditions
  • Side-by-side image variations
  • Zoomable high-resolution images
  • Clinical history and treatment options
  • Cross-referencing to differential diagnoses
  • Full text search and custom notes
Features
Read full description

The Dermatology DDx app from Unbound Medicine delivers visual, point-of-care guidance for establishing the diagnosis of skin disorders. This powerful, photo-intensive database allows users to search, view side-by-side variations of each skin disorder, easily zoom in on any of the high-resolution images, and instantly link to similar conditions to ensure accurate diagnosis. Each entry also contains clinical history, physical findings, and treatment options. Features of Dermatology DDx include: • 650+ high-quality images presented with common variations in presentation • Point-of-care guidance for 160+ dermatologic conditions • Cross reference links to differential diagnoses • History and treatment within each entry • Appendix charting potencies of topical steroids • Highlight and make custom notes within entries • Full Text Search to find topics quickly • Favorites for ’bookmarking’ important entries Authors: by James G. Dinulos MD, M. Shane Chapman MD, Andrew Eugene Werchniak MD, Dorothea T. Barton MD, Thomas P. Habif MD Publisher: Elsevier Powered by: Unbound Medicine Unbound Privacy Policy: www.unboundmedicine.com/privacy Unbound Terms of Use: https://www.unboundmedicine.com/end_user_license_agreement

About

Bone Age Height Predictor

Features
Currently charting
Read full description

Bone Age Height Predictor is a focused clinical calculator for estimating predicted adult height (PAH) using the Bayley–Pinneau method, bone age, and pediatric growth inputs. Designed for pediatric endocrinologists, pediatricians, radiologists, orthopedic clinicians, and other healthcare professionals, the app supports the common workflow where skeletal age is already available and the next step is a tempo-adjusted adult height estimate. Enter bone age from a hand/wrist radiograph report or clinical assessment, and translate skeletal maturity into a practical height estimate in seconds. KEY FEATURES • Bayley–Pinneau prediction Uses bundled, offline, sex-specific tables to estimate predicted adult height from current height and skeletal age. • Growth tempo selection Choose Advanced, Average, or Delayed maturation to match the patient's growth pattern—an important Bayley–Pinneau variable that most consumer height apps omit. • Fast single-screen workflow Enter sex, growth tempo, current height, and bone age (years), tap Calculate, and review the result with a summary of the inputs used. • Sex-specific skeletal-age tables Separate lookup tables for boys and girls across clinically relevant skeletal-age ranges, with tempo-specific coverage. • Clear inputs and outputs Results display Predicted Adult Height alongside the sex, tempo, height, and bone age values used in the lookup. • Offline calculation Tables are bundled on-device—no network connection required for the core calculation. • Not a grow-taller or lifestyle app A professional calculation tool, not exercise, coaching, or height-hacking content. WHO IT IS FOR Bone Age Height Predictor is intended for healthcare professionals involved in pediatric growth evaluation, including: • Pediatric endocrinologists • General pediatricians • Radiologists • Pediatric orthopedic clinicians • Growth and puberty specialists • Medical trainees in pediatric endocrine settings IMPORTANT MEDICAL DISCLAIMER This app is a clinical calculation and reference aid for qualified healthcare professionals. It does not diagnose, treat, monitor, or prevent any disease or condition. It does not interpret radiographs, perform bone age scoring, or replace professional clinical judgment, radiology assessment, or individualized patient care. Predicted adult height estimates are approximations and should be interpreted alongside the patient's full clinical history, growth pattern, pubertal stage, family heights, exam findings, and applicable local standards of care.

Screenshots

Derm DDx4 screens
Bone Age Height Predictor4 screens

Verdict

The call

The clearest difference is price: Derm DDx at Free against Bone Age Height Predictor's $2.99. Derm DDx also leads on iOS requirement (15.0 vs 18.6). Bone Age Height Predictor's advantage is in-app purchases (none vs 1) and chart position (#193 vs unranked). On 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

Derm DDx is free to download; Bone Age Height Predictor costs $2.99 up front. Derm DDx sells 1 one-off in-app purchase. Bone Age Height Predictor asks for nothing beyond the download.

Scorecard4 real differences · 6 level
Derm DDx versus Bone Age Height Predictor: the parameters behind the verdict, then further details
ParameterDerm DDxBone Age Height Predictor
PriceFree — better$2.99
Rating4.3 (6 ratings) — better—
Number of ratings6 — better—
Update frequencyEvery 5 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank—#193 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.6
Further details — not scored
Size10 MB44 MB
Age rating17+17+
DeveloperUnbound Medicine, Inc.Arthur Uber

In-app purchases

1 purchases

Derm DDx

One-time1
  • Dermatology DDx$69.99
None

Bone Age Height Predictor

No in-app purchases

Questions

Is Derm DDx free?
Derm DDx is free to download, with in-app purchases available.
Is Bone Age Height Predictor free?
Bone Age Height Predictor costs $2.99, with no in-app purchases.
Do Derm DDx or Bone Age Height Predictor have ads?
Neither Derm DDx nor Bone Age Height Predictor shows ads.

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