Call Schedule vs CathSource
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Call Schedule
View physician call schedules prepared via a web account. Access your group's schedule on mobile devices using your account credentials. Suitable for physician groups and any team sharing on-call duties.
- View call schedules
- Manual schedule preparation
- Rule-based schedule generation
- Web account integration
- Mobile access
- Supports physician groups
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Call Schedule is a Schedule Viewer. Manual or Rule-based Call Schedules can be prepared for a small physician group or for large multi-specialty groups through a account on our website https://callschedule.us. The schedule can then be viewed on your mobile devices using your account number and schedule name as credentials. This application is ideally suited for physician call groups but will work equally well for any group that shares call.
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
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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.
Screenshots
Verdict
Call Schedule and CathSource both sit at 1.7 stars, but that hides the real split: 38% of CathSource's written reviews are positive against 0% of Call Schedule's. CathSource also leads on in-app purchases (none vs 5). Call Schedule's advantage is iOS requirement (11.0 vs 18.5). On price, rating, ratings volume and update cadence 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. Call Schedule sells 4 one-off in-app purchases. CathSource asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 1.7 for Call Schedule against 1.6 for CathSource. Both are backed by a comparable volume of ratings — 9 and 23 respectively. Written reviews are what separate them: 0% of Call Schedule's written reviews are positive against 38% of CathSource's.
Call Schedule ships an update every 3 months, CathSource every 2 months. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.
| Parameter | Call Schedule | CathSource |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (9 ratings) — better | 1.6 (23 ratings) |
| Positive reviews | 0.0% of reviews | 38.5% of reviews — better |
| Number of ratings | 9 | 23 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 14 MB | 79 MB |
| Age rating | 4+ | 12+ |
| Developer | AMC Logic LTD | ECGsource LLC |
Customer experience
Call Schedule
CathSource
In-app purchases
Call Schedule
- Registration & Web Viewing$0.99
- Renew for one month$1.99
- Renew for three months$3.99
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- Renew for one year2 variants$9.99
CathSource
No in-app purchases









