Litt's Drug Eruption Database vs GRAPPA App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Litt's Drug Eruption Database
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This unique resource allows the search of profiles for thousands of generic and trade name drugs, while also providing over 125,000 references that link directly to PubMed, enabling better diagnose and treatment of patients. Reliable, international sources are used to regularly update the database with the latest developments in the field. This means that multiple new drugs and hundreds of new references are added each month, allowing you to benefit from up-to-date, accurate information that keeps you at the very forefront of your field. Supported by thousands of peer reviewed references linking out to PubMed and containing anecdotal observed evidence, this database can dramatically expand your knowledge of your field. In addition, this easy-to-use website gives you varying search options to ensure you get the information you want as quickly as possible. Each drug profile will provide you with a wealth of essential information, including: -- Synonyms -- Trade names -- Pharmaceutical company/companies -- Indications -- Category -- Half-life -- Drug-drug interactions -- Adverse reactions This resource covers adverse reactions from all angles with information on skin, hair, nails, mucosal, cardiovascular, central nervous system, neuromuscular/skeletal, respiratory, gastrointestinal, endocrine/metabolic, hematologic, renal, genitourinary, otic, ocular, local and other. It identifies potentially hazardous drug-drug interactions, making it a resource that not only meets your needs as a busy physician but also one which, once you have tried it, you simply cannot live without. The database was originated by Jerome Z. Litt from his annual Drug Eruptions and Reactions Manuals; it is now edited by Neil H. Shear, with the participation of Jerome Z. Litt.
GRAPPA App
This medical application aids in the assessment of patients with psoriatic arthritis and psoriasis. It provides tools to calculate disease severity scores and includes patient-completed questionnaires in multiple languages. Access to GRAPPA resources is also available.
- Psoriatic arthritis and psoriasis assessment
- Disease severity calculators (MDA, PASI, BSA)
- Patient-completed questionnaires (PsAID, PEST, HAQ)
- Multilingual questionnaire support
- Access to GRAPPA resources
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This app from GRAPPA (Group for Research and Assessment of Psoriasis and Psoriatic Arthritis) is designed to support the assessment of patients with psoriatic arthritis and psoriasis. It allows users to calculate a patient’s MDA and assess skin disease (using either PASI or BSA) through specially designed calculators. The app also includes PsAID, PEST and HAQ questionnaires which can be completed directly by patients in a range of languages and a selection of slides from the GRAPPA resources. Visit http://www.grappanetwork.org/ to find out more about GRAPPA.
Screenshots
Verdict
The clearest difference is iOS requirement: Litt's Drug Eruption Database at 9.3 against GRAPPA App's 13.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Litt's Drug Eruption Database ships an update every 4 months, GRAPPA App every 3 months. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.
| Parameter | Litt's Drug Eruption Database | GRAPPA App |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 13.0 |
| Further details — not scored | ||
| Size | 17 MB | 64 MB |
| Age rating | 17+ | 17+ |
| Developer | AMADataSet Limited | Group for Research and Assessment of Psoriasis and Psoriatic Arthritis |
In-app purchases
Litt's Drug Eruption Database
No in-app purchases
GRAPPA App
No in-app purchases
Questions
Is Litt's Drug Eruption Database free?
Is GRAPPA App free?
Do Litt's Drug Eruption Database or GRAPPA App have ads?
Which is updated more often, Litt's Drug Eruption Database or GRAPPA App?
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