Comparison

RADS Guide vs Isodose RT

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

Head to head
About

RADS Guide

Features
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Download includes a free trial; continued use requires a 1- or 12-month auto-renewing subscription. RADS Guide (LI-RADS, PI-RADS, O-RADS & more) is a clinical decision-support reference built around widely used “RADS” structured reporting systems. It delivers point-of-care, step-by-step category guidance so you can classify findings consistently, communicate risk clearly, and align follow-up recommendations—whether you practice in radiology or a related specialty. --- Key Features (unlocked after the free trial with an active subscription) Multi-RADS Integration • In-app access to the core categories, definitions, and management/reporting guidance across: LI-RADS, PI-RADS, O-RADS, C-RADS, CAD-RADS, Lung-RADS, TI-RADS, and Bone-RADS—organized for fast, practical use at the workstation or clinic. Dynamic Category Card • A single, interactive card that updates in real time as you select key inputs (e.g., modality/context and relevant imaging features)—instantly surfacing the appropriate RADS category and next-step guidance. System Quick-Switch • In a few taps, jump between LI-RADS, PI-RADS, O-RADS, C-RADS, CAD-RADS, Lung-RADS, TI-RADS, and Bone-RADS so you can stay in flow while reading diverse studies. Category-First Reporting Support • Clear, concise category summaries designed to support standardized impressions and reduce variability—helping you stay consistent across shifts, sites, and readers. Self-Assessment Mode • Expert-curated question packs that spotlight high-yield thresholds, common pitfalls, and diagnostic pearls to reinforce your understanding of the RADS frameworks. Enhanced Readability • Dark-mode support, dynamic text sizing, and a distraction-free interface optimized for hectic reading environments. Offline Access • All guideline logic runs on-device—no login or server required. Medical Disclaimer: This app is for informational purposes only and is not a substitute for professional medical advice. In addition to using this app, always consult a qualified healthcare provider for diagnosis and treatment decisions. SUBSCRIPTION OPTIONS ¹ • 1-Month subscription (free trial available) | Price displayed in-app; may vary by region • 12-Month subscription (free trial available) | Price displayed in-app; may vary by region We aim to add ACR RADS updates as soon as possible, usually within 30 days of publication. We plan to add new self-assessment question packs about every 6 months. Future feature additions and update frequency may change without notice. ¹ Payment & Renewal – Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings ▸ Apple ID ▸ Subscriptions. Note: If you switch plans or re-subscribe during the free trial, the remaining trial time is lost and you will be charged immediately. Privacy Policy: https://radiologiq.squarespace.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Isodose RT

Features
Read full description

Isodose RT puts verified organ-at-risk dose constraints in your hand at the point of plan review. It is built for radiation oncologists, medical physicists, dosimetrists, and trainees who need the right limit, for the right structure, with the source to back it up. Every constraint is traced to its published primary. You see the exact structure the limit was validated on, for example whole lung minus GTV or brain minus GTV, along with the toxicity endpoint, the evidence grade, a verbatim source snippet, and a resolvable DOI. No value is shown as approved without a verified reference. WHAT YOU GET • A searchable library of organ-at-risk dose constraints across conventional, SBRT, and SRS, drawn from QUANTEC, HyTEC, TG-101, and other validated sources • Pediatric tolerances from PENTEC, labelled so you always know when a limit is pediatric • NTCP by the Lyman-Kutcher-Burman model and TCP, computed from published parameters, with every assumption shown: formula, alpha beta, dose basis, and the parameter source • EQD2 and BED conversion • A plan checker: enter your achieved doses and see pass or fail against the limits, with the modeled risk where a published curve exists for that organ and endpoint • Delineation atlas figures and plain anatomy for each organ • Favourites and full-text search across organ, synonym, and toxicity WHY CLINICIANS TRUST IT • Each limit names the structure it was validated on, so you are not guessing whole organ against organ minus target • The calculators never hide the math • Sources resolve to a DOI you can open and read FREE AND PREMIUM The free tier covers EQD2, BED, and the core adult conventional constraints. Premium opens the full library across SBRT and SRS, the NTCP and TCP calculators, the plan checker, unlimited favourites, and notifications when guidelines change. IMPORTANT Isodose RT is a reference aid, not a treatment planning system. Always verify against your institutional protocol before any clinical use. Terms of Service: https://webofmedicine.ai/isodose-rt/terms Privacy Policy: https://webofmedicine.ai/isodose-rt/privacy

Screenshots

RADS Guide4 screens
Isodose RT4 screens

Verdict

The call

The clearest difference is in-app purchases: Isodose RT at none against RADS Guide's 2. On price, ads, device support and iOS requirement 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. RADS Guide sells 2 in-app purchases, starting at $3.99 per month. Isodose RT asks for nothing beyond the download.

Scorecard1 real difference · 4 level
RADS Guide versus Isodose RT: the parameters behind the verdict, then further details
ParameterRADS GuideIsodose RT
PriceFreeFree
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size116 MB42 MB
Age rating17+17+
DeveloperRADIOLOGiQ, LLCRishabh Kumar

In-app purchases

2 purchases

RADS Guide

Subscriptions2
  • 1-Month Subscription7 Days trial$3.991 Month
  • 12-Month Subscription7 Days trial$29.991 Year
None

Isodose RT

No in-app purchases

Questions

Is RADS Guide free?
RADS Guide is free to download, with in-app purchases available.
Is Isodose RT free?
Isodose RT is free to download, with no in-app purchases.
Do RADS Guide or Isodose RT have ads?
Neither RADS Guide nor Isodose RT shows ads.

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