Comparison

PRN Graph vs Iv

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

Head to head
About

PRN Graph

Features
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The Perined-Hoftiezer birth weight curves show the optimal birth weight (and its distribution) of children born at the corresponding gestational age. The curves are differentiated by gender. Identifying small children is important for reducing mortality and morbidity. These curves are based on data from the perinatal registration of newborns in the Netherlands. The curves are normative and therefore developed based on a low-risk population without known risk factors for fetal growth restriction. All multiple pregnancies, inductions, and primary cesarean sections were also excluded to approximate the optimal birth weight for each gestational age. More information can be found at www.perined.nl and in the following scientific publications: Hoftiezer L et al. Am J Obstet Gynecol. (2019) From population reference to national standard: new and improved birthweight charts. 10.1016/j.ajog.2018.12.023 Hoftiezer L et al. Eur J Pediatr. (2016) Defining small-for-gestational-age: prescriptive versus descriptive birthweight standards. 10.1007/s00431-016-2740-8 The curves were compiled by Liset Hoftiezer, guided by a working group consisting of representatives from various professional groups, birth care organizations, and researchers: Joyce Dijs-Elsinga, Jeroen van Dillen, Michel Hof, Marije Hogeveen, Chantal Hukkelhoven, Karline van de Kamp, Richard van Lingen, Alieke de Roon-Immerzeel, Rosalinde Snijders, Viki Verfaille, Ger de Winter, and Koos Zwinderman. The research position was financially supported by the Isala Innovation & Science Fund and Nutricia Early Life Nutrition; there has been no interference with the content of the project. ยฉ 2024 Perined

About

Iv

Features
Read full description

Met deze infuus-calculator-app kunt u snel en eenvoudig de infuusstand berekenen van continue intraveneuze medicatie, zoals prostin en ventolin, pijnstilling en sedatie (o.a. morfine en midazolam) en inotropie (o.a. dopamine, noradrenaline). De app biedt geen doseringen (deze kunnen worden gevonden in externe bronnen zoals het kinderformularium of het farmacotherapeutisch kompas), maar geeft de mogelijkheid eenvoudig de loop-snelheid van het infuus te berekenen op basis van de ingevoerde dosering en oplossing.

Screenshots

PRN Graph4 screens
Iv1 screens

Verdict

The call

The clearest difference is price: PRN Graph at Free against Iv's $1.99. PRN Graph also leads on update cadence (every 3 months vs every 10 months). Iv's advantage is iOS requirement (11.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

PRN Graph is free to download; Iv costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PRN Graph ships an update every 3 months, Iv every 10 months. The most recent releases landed on September 8, 2026 and September 12, 2026 respectively.

Scorecard3 real differences ยท 3 level
PRN Graph versus Iv: the parameters behind the verdict, then further details
ParameterPRN GraphIv
PriceFree โ€” better$1.99
Update frequencyEvery 3 months โ€” betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.011.0 โ€” better
Further details โ€” not scored
Size6 MB7 MB
Age rating17+12+
DeveloperGlamorous Goat B.V.Rimon

In-app purchases

None

PRN Graph

No in-app purchases

None

Iv

No in-app purchases

Questions

Is PRN Graph free?
PRN Graph is free to download, with no in-app purchases.
Is Iv free?
Iv costs $1.99, with no in-app purchases.
Do PRN Graph or Iv have ads?
Neither PRN Graph nor Iv shows ads.
Which is updated more often, PRN Graph or Iv?
PRN Graph ships an update every 3 months, and Iv every 10 months. Most recently, PRN Graph was updated on September 8, 2026 and Iv on September 12, 2026.

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