Ped(z) vs E
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ped(z)
This medical app provides pediatricians with a comprehensive set of calculators for body percentiles, blood pressure, echocardiography, and more. It supports various calculation methods and guidelines, aiding in accurate patient assessments. Developed by a pediatrician, it serves as a control tool for medical professionals.
- Body percentiles (height, weight, BMI)
- Blood pressure percentiles
- Pediatric and fetal echocardiography Z-scores
- Spirometry normal values
- Gestational age calculation
- QTc calculator
- Hyperbilirubinemia thresholds
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Helpful pediatric app for pediatricians, developed by a pediatrician. Helps with: • Body percentiles: Calculation of several somatic percentiles (height, weight, head circumference, BMI etc.) according to: - Kromeyer-Hauschild et al. 2001 - Hesse et al. 2016/2017 - Braegger C et al. 2011 (Züricher Longitudinalstudie) - KiGGS study RKI 2013 - WHO Growth Charts - CDC Growth Charts 2000 - Zemel et al 2015 (Mb Down) • Blood Pressure percentiles: Normal values for blood pressure according to: - KiGGS study RKI 2013 - AHA 4. Task Force Report 2005 • Pediatric Echocardiography: Z-Scores for pediatric echocardiography according to: - Gautier et al. 2010 - Kampmann et al. 2000 - Zilberman et al. 2005 - Peterssen et al. 2008 - Dallaire et al. 2011 - Dallaire et al. 2016 - Koestenberger et. al 2009, 2012, 2012, 2014 • Fetal echocardiography: Z-Scores for fetal echocardiography according to: - Lee 2010 • Birth percentiles: Calculation for term and preterm newborns according to: - Voigt et al. 2006 - Fenton TR, Kim JH. A systematic review and meta-analysis to revise the Fenton growth chart for preterm infants. BMC Pediatr. 2013; 13:59 biomedcentral.com/1471-2431/13/59 • Spirometry normal values: Spirometric z-scores and normal values according to: - Quanjer, P.H. et al. 2012 • Kidney percentiles: Z-Scores for ultrasound according to: - Deeg/Weitzel et al. 1997 - Weizel 2012 • Syringe pump: Calculates Dosage or other parameters • Gestational age: No more counting days/weeks in calendars • QTc calculator: Corrected QT interval, QTc, either by RR-Interval or heart rate • Body surface area: BSA according to Mosteller or DuBois • ECG normal values: For Children and adults according to Park MK and Guntheroth WG 2006 • Target height: Estimated target height calculated by their parent's height according to Hermanussen et al 2003 • Hyperbilirubinemia: Thresholds for phototherapy and exchange transfusion according to the german AWMF guideline 024 - 007 DISCLAIMER: No warranty. Use it only as control to your own calculations. Please seek a doctor’s advice in addition to using this app and before making any medical decisions
E
This medical app assists in calculating fluid resuscitation for burn patients. It accurately measures Total Body Surface Area (TBSA) and provides fluid requirements based on established formulas. The premium version includes advanced features for skin grafting and donor sites, with recommendations from the French Burns Society.
- Fluid management for burn patients
- TBSA measurement
- Parkland and Carvajal formulas
- Skin grafting and donor site drawing
- SFB recommendations
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Application aimed at guiding initial fluid management (adults and children) after drawing the burned surface on a template (Lund and Browder chart). Accurate Total Body Surface Area (TBSA) measurement. Total fluid requirements according to Parkland and Carvajal formulas. Program developed in partnership with the Burn Intensive Care Unit Team of Saint Joseph Saint Luc Hospital (Lyon - France) and the French Burns Society (SFB). Premium version: - Possibility to draw skin grafting and donor site - Recommendations of French Burns Society included (SFB) For more information: - http://www.ch-stjoseph-stluc-lyon.fr - http://sfb-brulure.com/
Screenshots
Verdict
The clearest difference is review sentiment: Ped(z) at 85% against E's 0%. Ped(z) also leads on price (Free vs $1.99) and rating (4.0 vs 1.0). On ads, in-app purchases, 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
Ped(z) is free to download; E costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ped(z) holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 85% of Ped(z)'s written reviews are positive against 0% of E's.
Ped(z) ships an update every 6 weeks, E every 18 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Ped(z) | E |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.0 (3 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 85.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 6 weeks — better | Every 18 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 17 MB | 82 MB |
| Age rating | 17+ | 4+ |
| Developer | Daniel Gräfe | Alkemiga |
Customer experience
Ped(z)
E
In-app purchases
Ped(z)
No in-app purchases
E
No in-app purchases
