# ABA Go vs Master Anesthesia

The clearest difference is review sentiment: Master Anesthesia at 79% against ABA Go's 14%. Master Anesthesia also leads on rating (4.9 vs 2.2) and update cadence (every 6 days vs monthly). ABA Go's advantage is in-app purchases (none vs 7). On price, 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. ABA Go asks for nothing beyond the download.

Master Anesthesia holds the better App Store score, 4.9 against 2.2. That said, the two scores are not equally well evidenced: Master Anesthesia has 2K ratings behind it against 58, so its average is the more settled of the two. Written reviews point the same way: 14% of ABA Go's written reviews are positive against 79% of Master Anesthesia's.

ABA Go ships an update monthly, Master Anesthesia every 6 days. The most recent releases landed on September 26, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ABA Go | Master Anesthesia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (58 ratings)](https://appshunter.io/ios/app/aba-go/id1498508871/reviews) | **[4.9 (2K ratings)](https://appshunter.io/ios/app/master-anesthesia/id1550793078/reviews)** |
| Number of ratings | 58 | **2K** |
| Positive reviews | 13.6% of reviews | **79.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 40 MB | 69 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [American Board of Anesthesiology](https://appshunter.io/developer/1065512355) | [Matthew Willis](https://appshunter.io/developer/1550793080) |

## What reviewers say

### ABA Go

[App page](https://appshunter.io/ios/app/aba-go/id1498508871)

This app consolidates physician portal functions for anesthesiologists, offering exam registration, results viewing, and progress monitoring for board certification. It also provides access to continuing education and medical license management.

**Highlights:** Exam registration and results, Certification progress monitoring, MOCA Minute question answering, Medical license management, CME Explorer access, Certificate status letter download

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

**In-app purchases:** none


### Master Anesthesia

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

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 ABA Go free?

ABA Go 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, ABA Go or Master Anesthesia?

Master Anesthesia is rated higher. ABA Go averages 2.2 out of 5 from 58 ratings, while Master Anesthesia averages 4.9 from 2K ratings.

### Do ABA Go or Master Anesthesia have ads?

Neither ABA Go nor Master Anesthesia shows ads.

### Which is updated more often, ABA Go or Master Anesthesia?

ABA Go ships an update monthly, and Master Anesthesia every 6 days. Most recently, ABA Go was updated on September 26, 2026 and Master Anesthesia on September 25, 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.*