Comparison

Radiology vs OB ToolBox

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

Head to head
About

Radiology

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Diagnostic Radiology - Imaging of Aortic Disease โ—† โ—† Go beyond paper and do Radiology โ—† โ—† โ–ธ This beautifully illustrated, interactive app offers authoritative guidance about indications for imaging, image interpretation and treatment options for aortic disease. It is of interest to cardiologists, radiologists, cardiothoracic and vascular surgeons and other specialists interested in the practical aspects of acquiring and interpreting imaging studies of the aorta. โ–ธ Many interactive examples of common and less frequently encountered aortic pathologies. โ–ธ Includes treatment options and possible complications, when appropriate, comprehensive tables are available. โ–ธ Also contains an in-depth chapter about imaging before and after TAVI placement โ–ธ The app has a dynamic searchable index that takes you directly to the interactive topic of interest See also the review in Radiology 269(2):338-9

About

OB ToolBox

This app offers a quick reference for essential medical values related to fetal growth, amniotic fluid, and Doppler indices. It includes calculators for preterm birth prediction, cesarean risk, and risk of stillbirth or miscarriage.

Highlights
  • Fetal growth reference values
  • Estimated fetal weight calculator
  • Amniotic fluid and Doppler indices
  • Bishop score reference
  • Preterm birth predictor
  • Cesarean risk calculator
  • Stillbirth and miscarriage risk calculators
Features
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OB ToolBox provides a useful and quick reference values for fetal growth, estimated fetal weight, amniotic fluid and doppler indices, Bishop scores, preterm birth predictor, cesarean risk calculator, stillbirth calculator, miscarriage risk calculator, and more.

Screenshots

Radiology4 screens
OB ToolBox4 screens

Verdict

The call

The clearest difference is price: OB ToolBox at Free against Radiology's $19.99. OB ToolBox also leads on update cadence (every 3 weeks vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

OB ToolBox is free to download; Radiology costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Radiology ships an update every 7 months, OB ToolBox every 3 weeks. The most recent releases landed on August 26, 2026 and July 20, 2026 respectively.

Scorecard2 real differences ยท 5 level
Radiology versus OB ToolBox: the parameters behind the verdict, then further details
ParameterRadiologyOB ToolBox
Price$19.99Free โ€” better
Update frequencyEvery 7 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
Monetizationโ€”Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better13.0
Further details โ€” not scored
Size451 MB56 MB
Age rating4+12+
DeveloperBestApps BVFrederick Blair

In-app purchases

None

Radiology

No in-app purchases

None

OB ToolBox

No in-app purchases

Questions

Is Radiology free?
Radiology costs $19.99, with no in-app purchases.
Is OB ToolBox free?
OB ToolBox is free to download, with no in-app purchases.
Do Radiology or OB ToolBox have ads?
Neither Radiology nor OB ToolBox shows ads.
Which is updated more often, Radiology or OB ToolBox?
Radiology ships an update every 7 months, and OB ToolBox every 3 weeks. Most recently, Radiology was updated on August 26, 2026 and OB ToolBox on July 20, 2026.

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