CTGi vs SAM4 Online
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CTGi
This app simulates a fetal heart rate monitor for obstetric training. It offers a realistic and economical platform for facilitators and students to learn and practice. Utilizing everyday technology, it provides an advanced simulation experience.
- Realistic fetal heart rate monitoring simulation
- Economical training solution
- Ideal for in-situ training
- Advanced obstetric simulation
- Built with everyday technology
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CTGi provides an economical, highly advanced and realistic fetal heart rate monitor simulation package. Using just two iPads, the lightness and simplicity of CTGi makes it ideal for in-situ training. CTGi gives facilitators a great tool for training and students an incredibly realistic platform to learn from. CTGi offers obstetric simulation as you’ve never seen it before, built off technology you use every day.
SAM4 Online
This interactive platform offers extensive simulated sound libraries and lesson guides for over 60 medical conditions. It provides students with easy access to class materials, quizzes, tests, and a virtual manikin for auscultation training.
- Simulated sounds library
- Lesson guides for 60+ conditions
- Virtual manikin simulator
- Access to class materials
- Quizzes and tests
- Control physical manikin
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SAM4 Online is an interactive auscultation training platform that gives users access to an extensive simulated sounds library and lesson guides for over 60 conditions The SAM4 Online app gives students easy access to the SAM4 Online platform from their own device. It includes access to class materials including readings, quizzes, case studies, tests and assignments, as well as an easy to use virtual manikin and auscultation simulator. The SAM4 Online App can also be used to control the SAM4 Auscultation Manikin by Cardionics.
Screenshots
Verdict
The clearest difference is in-app purchases: CTGi at none against SAM4 Online's 1. CTGi also leads on update cadence (every 3 months vs every 6 months). SAM4 Online's advantage is device support (3 vs 1). On price, rating, ratings volume 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
Both are free to download. SAM4 Online sells 1 one-off in-app purchase. CTGi asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for CTGi against 5.0 for SAM4 Online. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
CTGi ships an update every 3 months, SAM4 Online every 6 months. The most recent releases landed on September 1, 2026 and September 18, 2026 respectively.
| Parameter | CTGi | SAM4 Online |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.2 — better |
| Further details — not scored | ||
| Size | 23 MB | 90 MB |
| Age rating | 17+ | 12+ |
| Developer | iSimulate Pty Ltd | 3B Scientific |
Customer experience
CTGi
SAM4 Online
In-app purchases
CTGi
No in-app purchases
SAM4 Online
- Personal User - Full Content$19.99
