Comparison

PRN Graph vs Ephor

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

Head to head
About

PRN Graph

Features
Read full description

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. Β© 2024 Perined

About

Ephor

Read full description

Ephor biedt het meest recente wetenschappelijke overzicht van de literatuur over de farmacokinetiek bij ouderen. Met deze app kunt u per geneesmiddel opzoeken wat er bekend is over de werking bij de oude patiΓ«nt. Ook staan er Nu al 55 rapporten in de app over elk verschillend medicijn met nog 20+ rapporten in opkomst. De volgende rapporten zijn nu in de app te vinden: - Acenocoumarol - Alfuzosine - Alprazolam - Amitriptyline - Amlodipine - Apixaban - Atenolol - Barnidipine - Bisoprolol - Bromazepam - Captopril - Carvedilol - Celiprolol - Chloordiazepoxide - Citalopram - Clobazam - Clomipramine - Clorazepinezuur - Dabigatran - Darifenacine - Diazepam - Diltiazem - Dosulepine - Doxazosine - Doxepine - Duloxetine - Dutasteride - Edoxaban - Enalapril - Felodipine - Fenprocoumon - Fesoterodine - Finasteride - Flavoxaat - Fosinopril - Imipramine - Isradipine - Labetalol - Lacidipine - Lercanidipine - Lisinopril - Maprotiline - Metoprolol - Mirabegron - Nebivolol - Nicardipine - Nifedipine - Nitrendipine - Nortriptyline - Oxybutynine - Perindopril - Pindolol - Propranolol - Quinapril - Ramipril - Rivaroxaban - Sertraline - Silodosine - Solifenacine - Sotalol - Tamsulosine - Terazosine - Tolterodine - Verapamil - Zofenopril

Screenshots

PRN Graph4 screens
Ephor3 screens

Verdict

The call

The clearest difference is iOS requirement: Ephor at 14.0 against PRN Graph's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PRN Graph ships an update every 3 months, Ephor every 5 months. The most recent releases landed on September 8, 2026 and March 7, 2026 respectively.

Scorecard1 real difference Β· 5 level
PRN Graph versus Ephor: the parameters behind the verdict, then further details
ParameterPRN GraphEphor
PriceFreeFree
Update frequencyEvery 3 months β€” betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS16.014.0 β€” better
Further details β€” not scored
Size6 MB70 MB
Age rating17+17+
DeveloperGlamorous Goat B.V.everywhereIM BV

In-app purchases

None

PRN Graph

No in-app purchases

None

Ephor

No in-app purchases

Questions

Is PRN Graph free?
PRN Graph is free to download, with no in-app purchases.
Is Ephor free?
Ephor is free to download, with no in-app purchases.
Do PRN Graph or Ephor have ads?
Neither PRN Graph nor Ephor shows ads.
Which is updated more often, PRN Graph or Ephor?
PRN Graph ships an update every 3 months, and Ephor every 5 months. Most recently, PRN Graph was updated on September 8, 2026 and Ephor on March 7, 2026.

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