Comparison

PRIDD vs RAJKA 2024 ISAD

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

Head to head
About

PRIDD

Features
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Patient-Reported Impact of Dermatological Diseases (PRIDD) is a new and unique measure of the impact of dermatological diseases on the patient’s life and is the first dermatology-specific tool that is applicable to all skin conditions. No other dermatology tool has such broad applicability. PRIDD assesses four dimensions of impact: physical, psychological, life responsibilities and social impacts. PRIDD was developed using a scientifically rigorous and published methodology, resulting in the only dermatology-specific PROM that can be recommended for use according to the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) criteria. PRIDD was developed over seven years in partnership with Cardiff University, University of Hamburg, GlobalSkin and more than 5600 patients living with 90 different dermatological conditions from 96 countries. Each of the development phases of PRIDD have been published in reputable dermatology journals. It the first validated measure in dermatology developed with patients at every step of the process. To learn more about the development of the measure visit https://globalskin.org/research. The entire dermatology community – patients, clinicians, researchers, and pharmaceutical companies – can use PRIDD to better understand patient suffering thereby promoting improved patient-centered healthcare.

About

RAJKA 2024 ISAD

Features
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This year we chose the theme ‘Global Perspectives on Atopic Dermatitis: Uniting for a better Care’, and we are very pleased and proud that we are able to welcome world-renowned basic scientists and clinicians covering all aspects of atopic dermatitis, many of them pioneers in their field. Since Atopic Dermatitis is a global, frequent disease, we also sought to invite experts from WHO and all around the world to discuss how we can improve patient’s quality of life by providing and uniting for better treatments for all patients. One of the main subjects of this meeting will be the debilitating symptom of “pruritus (itching)”, its pathophysiology, assessment and treatment, because of its novel treatments, a very hot topic in dermatology and neuroimmunology. Here, we will explore where the future of Atopic Dermatitis therapy will go. The City of Doha is the capital of the State of Qatar and represents all the beauty and hospitality of the Arabian peninsula. Despite the astonishing natural and quite beauty of the desert, Qatar is a growing industrial modern country which attracts many tourists and families, as well as industry and universities. The venue of the meeting, the Sheraton hotel is located in the heart of the beautiful center of Doha, close to museums, cafes and beaches, which invite to relax during a pleasant Arabic winter enjoying culture and nature alike. For the first time in the Middle East, we have assembled an exciting program for scientists, clinicians, residents, students and industry partners alike, that will cover all aspects of Atopic Dermatitis research. Please join us for a special program in which you can experience in the best way possible, Arabic hospitality and make new friends. We are looking forward to welcoming you to Doha.

Screenshots

PRIDD4 screens
RAJKA 2024 ISAD4 screens

Verdict

The call

PRIDD and RAJKA 2024 ISAD are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PRIDD ships an update every 4 months, RAJKA 2024 ISAD every 2 months. The most recent releases landed on November 4, 2026 and October 27, 2026 respectively.

ScorecardNo meaningful differences
PRIDD versus RAJKA 2024 ISAD: the parameters behind the verdict, then further details
ParameterPRIDDRAJKA 2024 ISAD
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.013.0
Further details — not scored
Size5 MB54 MB
Age rating17+4+
Developerswiss4ward Europe S.L.Internationaler Verein fur die atopische Dermatitis

In-app purchases

None

PRIDD

No in-app purchases

None

RAJKA 2024 ISAD

No in-app purchases

Questions

Is PRIDD free?
PRIDD is free to download, with no in-app purchases.
Is RAJKA 2024 ISAD free?
RAJKA 2024 ISAD is free to download, with no in-app purchases.
Do PRIDD or RAJKA 2024 ISAD have ads?
Neither PRIDD nor RAJKA 2024 ISAD shows ads.
Which is updated more often, PRIDD or RAJKA 2024 ISAD?
PRIDD ships an update every 4 months, and RAJKA 2024 ISAD every 2 months. Most recently, PRIDD was updated on November 4, 2026 and RAJKA 2024 ISAD on October 27, 2026.

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