CathSource vs HEART
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
HEART
Explore the human heart with this comprehensive 3D digital anatomy atlas. It offers detailed interactive images, animations, and clinical perspectives to enhance understanding of cardiac structures and functions. Ideal for learning and teaching cardiovascular anatomy.
- 3D animated anatomy
- Interactive labeled images
- Clinical perspectives
- Detailed anatomical descriptions
- Zoom-in/out functionality
- Audio narration
Read full descriptionHide full description
The Focus Digital Atlas on Heart is a tool to enhance knowledge and comprehension on – - Location of heart in Thorax - Pericardium - Heart - External surfaces - Heart - Chambers - Valves of the heart - Coronary circulation - Venous drainage - Conducting system of the heart The Focus Digital Atlas on Heart - The most comprehensive Atlas with an exhaustive array of plates! - A 3D animated, reference tool to recognize and comprehend anatomical positions, planes, dissection layers, and understand clinical manifestations of various medical conditions. - Includes 3D animation videos of important applied aspects with clinical perspectives! - Includes Interactive images with detailed description for each label, enabled with user-paced on/off feature and zoom-in /out options Extensive information accessible through valuable visual tools using 3D animations accompanied by audio and interactive images. - Excellent Learning tool - Ideal for Knowledge retention - Reinforces knowledge through unlimited viewing -Enhances the learning and teaching experience
Screenshots
Verdict
The clearest difference is rating: HEART at 3.7 against CathSource's 1.6. HEART also leads on iOS requirement (9.0 vs 18.5). CathSource's advantage is in-app purchases (none vs 8) and update cadence (every 2 months vs every 21 months). On price, 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
Both are free to download. HEART sells 8 one-off in-app purchases. CathSource asks for nothing beyond the download.
HEART holds the better App Store score, 3.7 against 1.6. That said, the two scores are not equally well evidenced: CathSource has 23 ratings behind it against 3, so its average is the more settled of the two.
CathSource ships an update every 2 months, HEART every 21 months. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.
| Parameter | CathSource | HEART |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (23 ratings) | 3.7 (3 ratings) — better |
| Positive reviews | 38.5% of reviews | — |
| Number of ratings | 23 — better | 3 |
| Update frequency | Every 2 months — better | Every 21 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.5 | 9.0 — better |
| Further details — not scored | ||
| Size | 79 MB | 55 MB |
| Age rating | 12+ | 4+ |
| Developer | ECGsource LLC | Focus Medica |
Customer experience
CathSource
HEART
In-app purchases
CathSource
No in-app purchases
HEART
- Pericardium - Digital Atlas$2.99
- Heart External surface - Digital Atlas$2.99
- Heart Chambers-Digital Atlas$2.99
Show 5 moreShow fewer
- Valves of the heart - Digital Atlas$2.99
- Coronary circulation - Digital Atlas$2.99
- Venous drainage - Digital Atlas$2.99
- Conducting System of the Heart - Digital Atlas$2.99
- Digital Atlas - Buy All$12.99








