Comparison

DAS Calculator vs Rheumatologic Diseases

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

Head to head
About

DAS Calculator

This medical tool helps evaluate and track rheumatoid arthritis disease activity using validated formulas. It calculates scores based on joint counts, CRP, and general health, providing an estimate of disease progression for clinicians and researchers.

Highlights
  • Rheumatoid arthritis disease activity scoring
  • Track disease activity over time
  • Validated formulas for DAS28-CRP
  • Includes DAS/DAS28 converter
  • Unlock additional formulas with Pro version
Read full description

DAS, or "Disease Activity Score," is a measure of the activity of rheumatoid arthritis. Based on the work of the Department of Rheumatology at the University Medical Centre at Nigmegen (Netherlands), a validated tool (formula) was developed to evaluate and track Rheumatoid Arthritis disease activity. By measuring the tender and swollen joint counts (TJC & SJC respectively), CRP (c-reactive protein) and General Health, the DAS 28-4 gives an estimate of disease activity, while the DAS 28-3 uses just the TJC, SJC & CRP. Clinicians, rheumatologists in training, educators and researchers use this tool everyday and now you can have it readily available on your Apple mobile device. The following formulas are free for you to try. • DAS28-CRP • DAS28-CRP (3 Variable) • DAS/DAS28 Converter You may use these forever and never be nagged. There are no ads. Enjoy! If you like what you see, upgrade to the "Pro" version via one-time in-app purchase. This will unlock all remaining formulas, including: • DAS28 • DAS28 (3 Variable) • DAS-CRP • DAS-CRP (3 Variable) • Original DAS • Original DAS (3 Variable) • CDAI • SDAI • Cumulative and Weighed RAPID3®

About

Rheumatologic Diseases

This clinical decision support tool helps rheumatologists access evidence-based medical content and manage patient data. It features voice-activated search, case studies, and patient education resources to improve care at the point of need.

Highlights
  • Evidence-based medical content
  • Voice-activated search with Watson
  • Patient data tracking
  • Case studies and videos
  • Continuing medical education credit
  • Patient education resources
Features
Read full description

Rheumatologic Diseases @Point of Care™ (PoC) provides a streamlined clinical decision support tool for clinicians who specialize in rheumatologic diseases including: Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis and Juvenile Idiopathic Arthritis to obtain content when it is needed, keep track of their patients—enabling better decisions, better outcomes, and better care. Featuring Ask With Watson (@sk), clinicians use @Point of Care™ Clinician Suite apps to easily access curated, evidence-based, and disease-specific medical content. Clinicians navigate content by asking voice-enabled natural language questions. The Ask With Watson, confidence-rated answers happen more quickly to efficiently incorporate best treatment options and decisions are made faster to improve patient outcomes at the point of care. Each @Point of Care™ Clinician Suite app is designed to: • Support discovery and practice change • Provide relevant, evidence-based disease-specific medical content • Improve patient outcomes at the point of care Features: • Continually updated content • Topics in diagnosis, treatment, and care management developed with expert physician authors • Case studies, videos, and interviews • Access to actionable patient-recorded data • Detailed reference list with access to original sources • Continuing medical education credit (CME/CE) • Surveys and peer polling • Patient education resources to share with patients • Receive detailed information regarding your patients' health such as: Medications and treatments; Symptoms and side effects; Charts that record test results, medication adherence, and more • Voice-activate commands for Watson, Patient Access and Clinical resources • Read-aloud feature for hands-free listening to medical texts • App Prescriber lets you prescribe one of our many patient apps to your patients

Screenshots

DAS Calculator4 screens
Rheumatologic Diseases4 screens

Verdict

The call

The clearest difference is rating: DAS Calculator at 5.0 against Rheumatologic Diseases's 1.0. Rheumatologic Diseases's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 4 months). On price, ratings volume, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DAS Calculator sells 1 one-off in-app purchase. Rheumatologic Diseases asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

DAS Calculator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

DAS Calculator ships an update every 4 months, Rheumatologic Diseases every 5 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
DAS Calculator versus Rheumatologic Diseases: the parameters behind the verdict, then further details
ParameterDAS CalculatorRheumatologic Diseases
PriceFreeFree
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Positive reviews55.6% of reviews—
Number of ratings11
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size1 MB19 MB
Age rating4+12+
DeveloperGreg Fiumara@Point of Care

Customer experience

DAS Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

Rheumatologic Diseases

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

DAS Calculator

One-time1
  • Unlock All Calculators$1.99
None

Rheumatologic Diseases

No in-app purchases

Questions

Is DAS Calculator free?
DAS Calculator is free to download, with in-app purchases available.
Is Rheumatologic Diseases free?
Rheumatologic Diseases is free to download, with no in-app purchases.
Which has better reviews, DAS Calculator or Rheumatologic Diseases?
DAS Calculator is rated higher. DAS Calculator averages 5.0 out of 5 from 1 ratings, while Rheumatologic Diseases averages 1.0 from 1 ratings.
Do DAS Calculator or Rheumatologic Diseases have ads?
Neither DAS Calculator nor Rheumatologic Diseases shows ads.
Which is updated more often, DAS Calculator or Rheumatologic Diseases?
DAS Calculator ships an update every 4 months, and Rheumatologic Diseases every 5 weeks. Most recently, DAS Calculator was updated on November 1, 2026 and Rheumatologic Diseases on November 2, 2026.

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