Comparison

GrowthPlot vs Z Scores

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

Head to head
About

GrowthPlot

Features
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The “GrowthPlot” app plots selected growth parameters (length/height, weight, body-mass index, weight-for-length and head circumference) for typically growing children (using either the “WHO Growth Charts for Canada, March 2014 revision” or the “2000 CDC Growth Charts” reference. You can also plot selected growth parameters (length/height, weight, weight-for-length/height, body-mass index and head circumference) for children with a number of syndromes (Turner, Down, Noonan, Prader–Willi, Russell–Silver and Klinefelter) using the QuickChart API, which results in a link which allows you to save or share the chart image. Citations are provided for each reference range used for these calculations.

About

Z Scores

This app provides clinical-grade pediatric growth assessments using WHO standards. It calculates key metrics like weight-for-age and BMI, offering Z-scores, validation checks, and visual growth charts. Advanced features include BSA calculations, fluid requirements, and patient management with PDF report generation.

Highlights
  • WHO-based growth calculations
  • Weight-for-Age, Height-for-Age, BMI-for-Age
  • Z-scores and growth classification
  • Visual growth charts
  • Body Surface Area (BSA) calculator
  • Holliday-Segar fluid requirements
  • Patient measurement history
  • Professional PDF report generation
Features
Read full description

PediaMetrics: Professional Pediatric Growth Assessment PediaMetrics is a clinical-grade pediatric growth calculator designed for healthcare professionals, medical students, and informed caregivers who require accurate WHO-based growth assessment tools. Built with precision and clarity, PediaMetrics transforms complex pediatric growth data into actionable insights in seconds. WHO Growth Standards. Done Right. Calculate and interpret: • Weight-for-Age (WFA) • Height-for-Age (HFA) • Weight-for-Length / Weight-for-Height (WFL/WFH) • Body Mass Index-for-Age (BMI) • Head Circumference-for-Age (HCFA, age-eligible) Each calculation includes: • Z-scores • Validation checks • Growth classification ranges • Visual growth charts All based on official WHO growth standards. Beyond Growth: Clinical Tools Included PediaMetrics also includes: • Body Surface Area (BSA) calculations • Holliday-Segar fluid requirements • Age-based validation logic • Chart visualization with grid, axes, and coordinate tracking • Patient measurement history Designed for real clinical workflows. Patient Management Made Simple Organize and manage patient records with: • Searchable patient list • Measurement history tracking • Editable patient details • Growth chart visualization • Secure deletion controls All stored locally with SwiftData for privacy and performance. Professional PDF Reports Generate structured PDF reports including: • Patient summary • Measurements • Z-scores • Validation results • Growth charts (when eligible data exists) Charts include gradient backgrounds, axes, and highlighted latest measurement with date badge for clinical clarity. Perfect for: • Clinical documentation • Caregiver communication • Academic reference Designed for Professionals • Clean, distraction-free interface • Light & Dark Mode support • Accurate medical logic • Subscription model for advanced features • Continuous updates and improvements Free vs Premium Free version includes: • Core calculations • First chart access Premium unlocks: • Full Z-score outputs • Advanced charts • PDF report generation • Extended patient management Important Notice PediaMetrics is intended as a support tool and does not replace professional medical judgment. Always interpret results within clinical context. If you work in pediatrics, medical training, or child growth monitoring, PediaMetrics provides precision without complexity. Download today and bring WHO growth standards into your daily workflow. Terms Of Use = https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy = https://pediametrics.valioralabs.com/privacy-policy.html

Screenshots

GrowthPlot4 screens
Z Scores4 screens

Verdict

The call

The clearest difference is in-app purchases: GrowthPlot at none against Z Scores's 3. GrowthPlot also leads on update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Z Scores sells 3 in-app purchases, starting at $1.99 per month. GrowthPlot asks for nothing beyond the download.

UpkeepUpdate frequency

GrowthPlot ships an update every 6 days, Z Scores every 3 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
GrowthPlot versus Z Scores: the parameters behind the verdict, then further details
ParameterGrowthPlotZ Scores
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size85 MB124 MB
Age rating12++17
DeveloperBC Children's HospitalEdwar Martinez

In-app purchases

None

GrowthPlot

No in-app purchases

3 purchases

Z Scores

Subscriptions2
  • PediMetrics$1.991 Month
  • PediaMetrics7 Days trial$4.991 Year
One-time1
  • Lifetime Access$9.99

Questions

Is GrowthPlot free?
GrowthPlot is free to download, with no in-app purchases.
Is Z Scores free?
Z Scores is free to download, with in-app purchases available.
Do GrowthPlot or Z Scores have ads?
Neither GrowthPlot nor Z Scores shows ads.
Which is updated more often, GrowthPlot or Z Scores?
GrowthPlot ships an update every 6 days, and Z Scores every 3 weeks. Most recently, GrowthPlot was updated on November 4, 2026 and Z Scores on November 5, 2026.

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