Comparison

RheumaHelper vs Ontol

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

Head to head
About

RheumaHelper

This medical tool offers rheumatologists a comprehensive set of disease activity calculators and classification criteria for daily use. It provides verified content based on published research and is designed for easy reference on mobile devices.

Highlights
  • Disease activity calculators
  • Classification criteria
  • Verified medical content
  • Award-winning tool
  • Easy mobile reference
Features
Read full description

** An awarded mobile tool for rheumatologists ** RheumaHelper is a pocket rheumatology assistant. Classification criteria, disease activity calculators, and everyday clinical tools — always with you, easy to use, and ready when you need them. Designed for iOS 26 with Liquid Glass on iPhone and iPad. ** Verified content ** Reviewed by Prof. Matija Tomšič, M.D., Ph.D., Asst. Prof. Žiga Rotar, M.D., Ph.D. (rheumatologists at University Medical Centre Ljubljana, Slovenia), and Rok Ješe, M.D., Ph.D. (rheumatologist and medical advisor at Mediately). All calculators and criteria are based on referenced equations. References are available inside the app. ** Available tools ** More than 40 tools with fast search access. Classification criteria: • Adult Still's disease (Cush, Fautrel, Yamaguchi) • Antiphospholipid syndrome • Arthralgia suspicious for progression to RA (2016 EULAR) • Autoinflammatory recurrent fevers (clinical classification) • Axial spondyloarthritis • Behçet's Disease (ICBD) • Fibromyalgia (2016 ACR) • Gout (2014 Oxford; 2015 ACR-EULAR) • IgG4-related disease (2019 ACR/EULAR) • Idiopathic inflammatory myopathies (2017 ACR/EULAR) • Inflammatory Back Pain • Peripheral spondyloarthritis • Polymyalgia rheumatica • Primary Sjögren's syndrome (2016 ACR/EULAR) • Psoriatic arthritis (CASPAR) • Rheumatoid arthritis (2010 ACR/EULAR) • Systemic lupus erythematosus (ACR, SLICC, 2019 EULAR/ACR) • Systemic sclerosis (ACR/EULAR) • …and more Disease activity calculators: • ASDAS — Ankylosing spondylitis disease activity score • BASDAI — Bath ankylosing spondylitis disease activity index • BVAS — Birmingham vasculitis activity score (v3) • DAPSA, DAPSA28 • DAS28 • ESSDAI, ESSPRI • Five-Factor Score • PASI — Psoriasis area and severity index • SDAI / CDAI • SELENA-SLEDAI • VDI — Vasculitis damage index • …and more General tools: • QTc (Corrected QT Interval) • Creatinine Clearance (Cockcroft–Gault) • eGFR (CKD-EPI and MDRD) • …and more coming soon

About

Ontol

Decode complex medical reports with ease. Upload or snap a picture of your MRI, CT, or histopathology results to receive clear explanations of medical jargon and abbreviations. This tool aids understanding but should not replace professional medical advice.

Highlights
  • Medical jargon explanation
  • AI-powered analysis
  • Supports MRI, CT, histopathology
  • OCR and translation
  • Clearer understanding of reports
Features
Read full description

Experiencing difficulties understanding your medical reports due to medical jargon? Simply take a picture and upload it onto Ontol, where you can get an easier explanation of your medical test reports. With our AI models, we provide you with a clearer understanding of difficult medical terminology and abbreviations used throughout MRI, CT, and histopathology reports. Note: Currently, Ontol best supports MRI, CT, and histopathology results, and we plan to support a wider range of services throughout future updates. We use optical character recognition (OCR) and translation algorithms, which may produce varying results depending on the quality of the report scan, leading to slightly different explanations. Note that the result may contain errors and should not be used for making medical decisions. Warning: Ontol is not responsible for any medical judgments, diagnoses, or substitutions to clinical consultations with healthcare professionals. Medical decisions and treatments should always be made in consultation with qualified medical practitioners.

Screenshots

RheumaHelper4 screens
Ontol4 screens

Verdict

The call

The clearest difference is update cadence: Ontol at every 9 days against RheumaHelper's every 2 months. Ontol also leads on monetization model (free vs ad-supported) and iOS requirement (15.1 vs 18.0). RheumaHelper's advantage is ratings volume (130 vs 5). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Ontol holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: RheumaHelper has 130 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

RheumaHelper ships an update every 2 months, Ontol every 9 days. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
RheumaHelper versus Ontol: the parameters behind the verdict, then further details
ParameterRheumaHelperOntol
PriceFreeFree
Rating4.8 (130 ratings)5.0 (5 ratings) — better
Positive reviews58.6% of reviews—
Number of ratings130 — better5
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size20 MB53 MB
Age rating17+17+
DeveloperModra Jagoda, spletno oblikovanje in razvoj mobilnih aplikacij d.o.o.Tesser Inc.

Customer experience

RheumaHelper

All ratings129 ratings
Positive97.7%
Neutral1.6%
Negative0.8%
Written reviews29 reviews
Positive58.6%
Neutral20.7%
Negative20.7%

Ontol

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RheumaHelper

No in-app purchases

None

Ontol

No in-app purchases

Questions

Is RheumaHelper free?
RheumaHelper is free to download, with no in-app purchases.
Is Ontol free?
Ontol is free to download, with no in-app purchases.
Which has better reviews, RheumaHelper or Ontol?
Ontol is rated higher. RheumaHelper averages 4.8 out of 5 from 130 ratings, while Ontol averages 5.0 from 5 ratings.
Do RheumaHelper or Ontol have ads?
Neither RheumaHelper nor Ontol shows ads.
Which is updated more often, RheumaHelper or Ontol?
RheumaHelper ships an update every 2 months, and Ontol every 9 days. Most recently, RheumaHelper was updated on October 23, 2026 and Ontol on October 10, 2026.

Other comparisons