# C8 Health vs Master Anesthesia

The clearest difference is in-app purchases: C8 Health at none against Master Anesthesia's 7. Master Anesthesia's advantage is update cadence (weekly vs every 2 months) and ratings volume (2K vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. Master Anesthesia sells 7 in-app purchases, starting at $69.99 per year. C8 Health asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for C8 Health against 4.9 for Master Anesthesia. That said, the two scores are not equally well evidenced: Master Anesthesia has 2K ratings behind it against 2, so its average is the more settled of the two.

C8 Health ships an update every 2 months, Master Anesthesia weekly. Both last shipped on November 3, 2026.

## The numbers

| Metric | C8 Health | Master Anesthesia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/c8-health/id1534264609/reviews)** | [4.9 (2K ratings)](https://appshunter.io/ios/app/master-anesthesia/id1550793078/reviews) |
| Number of ratings | 2 | **2K** |
| Positive reviews | — | 78.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Subscription |
| Best chart rank | — | **#124** |
| Size | 60 MB | 66 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [HeadToToe.io](https://appshunter.io/developer/1671432149) | [Matthew Willis](https://appshunter.io/developer/1550793080) |

## What reviewers say

### C8 Health

[App page](https://appshunter.io/ios/app/c8-health/id1534264609)

This application centralizes clinical resources for healthcare teams, embedding them into existing workflows. It offers AI-powered search and smart formats to ensure best practices are readily accessible at the point of care, enhancing efficiency and patient outcomes.

**Highlights:** Centralized clinical resources, AI-powered search, Smart content formats, Workflow integration, Point-of-care access

**In-app purchases:** none


### Master Anesthesia

[App page](https://appshunter.io/ios/app/master-anesthesia/id1550793078)

**Currently charting:** #124 Top Grossing · Medical (US App Store)

This app provides anesthesia professionals with quick answers to common questions. It highlights anesthetic implications of diseases, surgical cases, and drugs, and includes a searchable acronym list and a comprehensive calculator for dosages, blood loss, and fluid management.

**Highlights:** Disease anesthetic implications, Surgical case anesthetic implications, Drug anesthetic implications, Searchable acronym list, Local anesthetic dosage calculator, Blood volume and loss calculator, Fluid and equipment calculations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Anesthesia Contributor | $69.99 | per year |
| Full Access CE | $449.00 | per year |
| Module Unlock | $24.99 | one-time |
| Course Unlock | $99.00 | one-time |
| Master Anesthesia One Time | $99.99 | one-time |
| One-Time | $149.99 | one-time |
| Course Unlock | $449.00 | one-time |

**What reviewers like**

- 👍 Intuitive and user-friendly interface
- 🚀 Efficient and fast calculators
- 📚 Comprehensive information and resources
- 💡 Helpful for clinical practice and preparation
- 🔍 Useful reference for anesthesia providers

**What reviewers complain about**

- 🐛 Frequent crashes and freezes in the calculations section
- 🔒 Issues with purchase verification and login
- 💰 Concerns about the transition to a paid subscription model
- 🔋 High battery consumption and performance issues on older devices

**Reported bugs**

- Incorrect terminology and credentials on the starting screen
- Inconsistent behavior when accessing content after subscription changes

**Requested features**

- Offline access to content
- Apple Watch integration for the calculator
- More detailed and up-to-date information on procedures and conditions


## Frequently asked questions

### Is C8 Health free?

C8 Health is free to download, with no in-app purchases.

### Is Master Anesthesia free?

Master Anesthesia is free to download, with in-app purchases available.

### Which has better reviews, C8 Health or Master Anesthesia?

C8 Health is rated higher. C8 Health averages 5.0 out of 5 from 2 ratings, while Master Anesthesia averages 4.9 from 2K ratings.

### Do C8 Health or Master Anesthesia have ads?

Neither C8 Health nor Master Anesthesia shows ads.

### Which is updated more often, C8 Health or Master Anesthesia?

C8 Health ships an update every 2 months, and Master Anesthesia weekly. Most recently, C8 Health was updated on November 3, 2026 and Master Anesthesia on November 3, 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.*