Comparison

CathSource vs Valve In Valve

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

Head to head
About

CathSource

A comprehensive medical reference focused on cardiac catheterization and angiography. It offers a searchable index of specialized topics, a database of videos of common and rare findings, and a collection of images including hemodynamic formulas and tables.

Highlights
  • Searchable index of cardiac catheterization topics
  • Database of coronary angiogram, ventriculogram, and aortogram videos
  • Image database with hemodynamic formulas and tables
  • Covers common and rare cardiovascular pathologies
  • Developed by practicing Interventional Cardiologists
Features
Read full description

CathSource (from the creators of ECGsource) is an up-to-date medical reference devoted exclusively to cardiac catheterization and angiography. Developed by practicing Interventional Cardiologists for both specialists and trainees in the field of cardiovascular disease, CathSource offers the following content: * Searchable index of specialized topics including: Normal Coronary Anatomy Anomalous Coronary Arteries Coronary Artery Aneurysms Myocardial Bridging Takotsubo Cardiomyopathy Plaque Rupture & Thrombus Standard Views of Angiography Left Ventriculography Coarctation of the Aorta Femoral Artery Access for Angiography Radial Artery Access for Angiography Intravascular Ultrasound (IVUS) Optical Coherence Tomography (OCT) Fractional Flow Reserve (FFR) Hemodynamics: Intracardiac Pressures Hemodynamics: Intracardiac Waveforms Hemodynamics: Cardiac Output Hemodynamics: Intracardiac Shunts Hemodynamics: Aortic Stenosis Hemodynamcis: Aortic Regurgitation Hemodynamics: Mitral Stenosis Hemodynamcis: Mitral Regurgitation Hemodynamcis: Constriction Hemodynamics: Restriction * Searchable database containing more than 30 videos (coronary angiograms, ventriculograms, and aortograms) of both common and rare findings in the cardiac catheterization lab * Searchable database of over 65 images including hemodynamic formulas, tables, and figures CathSource provides a detailed overview of important cardiac catheterization and angiography topics, incorporating educational images/videos as well as reviews of pertinent medical literature. CathSource is the ideal application to assist you in understanding and recognizing cardiovascular pathology in the catheterization lab.

About

Valve In Valve

This app provides clinicians with quick, clear, and concise information on heart valves and Valve in Valve therapy. It guides users through surgical and TAVR valve design, helping to plan and perform procedures by identifying surgical valves, selecting correct TAVR valve sizes, and determining optimal placement. The app offers offline access to vital information, enhancing understanding and improving patient outcomes.

Highlights
  • Heart valve design information
  • Valve in Valve therapy guide
  • Surgical and TAVR valve sizing
  • Image-based placement guidance
  • Video examples of valve placement
  • Offline information access
  • Stepped valve identification process
Features
Read full description

An instant guide to Valve in Valve procedures for clinicians Quick, clear and concise information about heart valves and Valve in Valve therapy. A guide you wish you always had at your fingertips. About Valve in Valve app was originally developed as a collaboration between the technology company UBQO and Dr. Vinayak (Vinnie) Bapat, Consultant Cardiac Surgeon at St. Thomas' Hospital, London, UK. The team at KRUTSCH reimagined the app, introducing modern design, as well as a novel editing interface for to allow cardiologists to edit cloud-hosted valve data. Valve in Valve app provides information specific for a clinical scenario, quickly and simply. This will help in the planning of and performing a Valve in Valve case. The application navigates the user through important aspects of surgical and TAVR valve design, which are vital for a successful Valve in Valve procedure. The app logically steps through the possible combinations to give the user specific information needed to perform the procedure. Success of a Valve in Valve procedure is based on correct identification of the surgical valve, choosing the correct size of the TAVR valve and its subsequent accurate placement. Surgical valves vary in appearance under fluoroscopy and also in their internal diameter. Similarly TAVR valves differ in their appearances and available sizes. Knowledge about all the surgical valves that have been implanted in the last two decades is minimal but relevant to the Valve in Valve therapy. Users can now familiarise themselves with important design information about surgical and TAVI valves; they can also select the valve and find out which size of TAVR valve could be used and how it is best placed during a Valve in Valve procedure. If the valve type is unknown, the App also guides the user through a series of steps where they can identify the surgical valve type and then use the information available for it. The Valve In Valve app can be used to plan a case and confirm suitability for this procedure and reduces the need to trawl through vast amounts of literature to find information specific to the clinical scenario. The information is also available without the need for an internet connection and will enhance the users understanding of various aspects of this procedure. We hope this will result in improved results and better outcomes for patients. Key features - Design information for multiple types of surgical valve - Sizing information for multiple types of surgical valve - Real life and fluoroscopic images of all the surgical valves - Design information about TAVR valve designs - Sizing information for these TAVR valves - Guides the user through a stepped process to help choose a specific valve, then the size and lastly the important dimensions to plan a Valve in Valve procedure - Image based guidance for the ideal placement of a TAVR valve - Video examples of actual placement of a TAVR valve - Discusses important design considerations in detail to improve understanding of the Valve in Valve procedure

Screenshots

CathSource4 screens
Valve In Valve4 screens

Verdict

The call

The clearest difference is rating: Valve In Valve at 4.6 against CathSource's 1.6. Valve In Valve also leads on monetization model (free vs paid) and review sentiment (71% vs 38%). On price, ratings volume, update cadence and ads 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

Valve In Valve holds the better App Store score, 4.6 against 1.6. Both are backed by a comparable volume of ratings — 23 and 10 respectively. Written reviews point the same way: 38% of CathSource's written reviews are positive against 71% of Valve In Valve's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
CathSource versus Valve In Valve: the parameters behind the verdict, then further details
ParameterCathSourceValve In Valve
PriceFreeFree
Rating1.6 (23 ratings)4.6 (10 ratings) — better
Positive reviews38.5% of reviews71.4% of reviews — better
Number of ratings23 — better10
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.515.1 — better
Further details — not scored
Size79 MB41 MB
Age rating12+12+
DeveloperECGsource LLCKRUTSCH

Customer experience

CathSource

All ratings23 ratings
Positive8.7%
Neutral8.7%
Negative82.6%
Written reviews39 reviews
Positive38.5%
Neutral7.7%
Negative53.8%

Valve In Valve

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

In-app purchases

None

CathSource

No in-app purchases

None

Valve In Valve

No in-app purchases

Questions

Is CathSource free?
CathSource is free to download, with no in-app purchases.
Is Valve In Valve free?
Valve In Valve is free to download, with no in-app purchases.
Which has better reviews, CathSource or Valve In Valve?
Valve In Valve is rated higher. CathSource averages 1.6 out of 5 from 23 ratings, while Valve In Valve averages 4.6 from 10 ratings.
Do CathSource or Valve In Valve have ads?
Neither CathSource nor Valve In Valve shows ads.
Which is updated more often, CathSource or Valve In Valve?
CathSource ships an update every 2 months, and Valve In Valve every 2 months. Most recently, CathSource was updated on October 12, 2026 and Valve In Valve on September 24, 2026.

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