# Call Schedule vs CathSource

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.

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.

## The numbers

| Metric | Call Schedule | CathSource |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (9 ratings)](https://appshunter.io/ios/app/call-schedule/id335902744/reviews)** | [1.6 (23 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews) |
| Number of ratings | 9 | **23** |
| Positive reviews | 0.0% of reviews | **38.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 14 MB | 79 MB |
| Requires iOS | **11.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [AMC Logic LTD](https://appshunter.io/developer/324459682) | [ECGsource LLC](https://appshunter.io/developer/377139096) |

## What reviewers say

### Call Schedule

[App page](https://appshunter.io/ios/app/call-schedule/id335902744)

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.

**Highlights:** View call schedules, Manual schedule preparation, Rule-based schedule generation, Web account integration, Mobile access, Supports physician groups

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Registration & Web Viewing | $0.99 | one-time |
| Renew for one month | $1.99 | one-time |
| Renew for three months | $3.99 | one-time |
| Renew for one year | $9.99 | one-time |


### CathSource

[App page](https://appshunter.io/ios/app/cathsource/id420847275)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Call Schedule free?

Call Schedule is free to download, with in-app purchases available.

### Is CathSource free?

CathSource is free to download, with no in-app purchases.

### Which has better reviews, Call Schedule or CathSource?

Call Schedule is rated higher. Call Schedule averages 1.7 out of 5 from 9 ratings, while CathSource averages 1.6 from 23 ratings.

### Do Call Schedule or CathSource have ads?

Neither Call Schedule nor CathSource shows ads.

### Which is updated more often, Call Schedule or CathSource?

Call Schedule ships an update every 3 months, and CathSource every 2 months. Most recently, Call Schedule was updated on September 30, 2026 and CathSource on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*