GasWork.com AA vs Master Anesthesia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GasWork.com AA
This app connects Anesthesiologist Assistants with job opportunities. It mirrors the website's listings, allowing users to view, mark as read, and save job posts. Users can also search by state or position duration and inquire about roles.
- View Anesthesiologist Assistant job opportunities
- Mark jobs as read
- Save job posts for later
- Search jobs by state
- Search jobs by position duration
- Inquire about jobs via email or web
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Since 1996, GasWork.com has continued to be the go to place for AA jobs. AA = Anesthesiologist Assistants. Our free GasWork.com AA iPhone app continually mirrors the website so you can peruse Anesthesiologist Assistants opportunities which are constantly changing. After you have clicked on a post and seen the job details, that post is marked as, "Read", so you'll know what jobs you have already looked at. If you want to save a job post so you can find it again, you can swipe left to "Save." Alternatively, on the job details page you can click the hamburger menu icon (three bars) to see a "Save" button. That menu icon will also allow you to Share, Inquire By Email or possibly Inquire By Web. You can search all the jobs by State or Duration of Position (Full Time, Locum Tenens, etc).
Master Anesthesia
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.
- 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
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Master Anesthesia helps anesthesia professionals find answers quickly to common questions. The primary purpose is to provide clinicians with the highlighted anesthetic implications of specific diseases, surgical cases, and drugs. In addition, a searchable list of over 1,000 acronyms is provided. A calculator has also been created to assist with maximum local anesthetic dosage, estimated blood volume, maximum allowable blood loss, fluid calculations, equipment, vitals, and more. Subscription and Purchase Options: Clinical Access Pro: $69.99/year – Full access to all clinical tools and updates. Auto-renews yearly. Full Access CE: $449.99/year – Full access to Clinical Access Pro + everything CRNAs need for their 4-year cycle. More than 150 pre-approved Class A (Mac-Ed) credits, and over 100 courses to choose from. Payment & Renewal: Payment will be charged to your Apple ID account at the time of confirmation. Annual subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime in your Apple ID account settings. For more details on managing subscriptions, visit: https://support.apple.com/en-us/118428 Website: https://masteranesthesia.com Terms of Use: https://masteranesthesia.com/terms-of-service Privacy Policy: https://masteranesthesia.com/privacy-policy-and-disclaimer
Screenshots
Verdict
The clearest difference is in-app purchases: GasWork.com AA at none against Master Anesthesia's 7. Master Anesthesia's advantage is update cadence (weekly vs every 44 months) and ratings volume (2K vs 8). On price, rating, ads and device support 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. Master Anesthesia sells 7 in-app purchases, starting at $69.99 per year. GasWork.com AA asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for GasWork.com AA against 4.9 for Master Anesthesia. That said, the two scores are not equally well evidenced: Master Anesthesia has 2K ratings behind it against 8, so its average is the more settled of the two.
GasWork.com AA ships an update every 44 months, Master Anesthesia weekly. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.
| Parameter | GasWork.com AA | Master Anesthesia |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | 4.9 (2K ratings) |
| Positive reviews | — | 78.3% of reviews |
| Number of ratings | 8 | 2K — better |
| Update frequency | Every 44 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Best chart rank | — | #197 — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 6 MB | 69 MB |
| Age rating | 4+ | 12+ |
| Developer | GasWork.com, Inc. | Matthew Willis |
Customer experience
GasWork.com AA
Master Anesthesia
Bugs and requests
GasWork.com AA
Not enough reviews yet to summarise bugs or requests.
Master Anesthesia
Reported bugs
2 issues- Incorrect terminology and credentials on the starting screen
- Inconsistent behavior when accessing content after subscription changes
Requested features
3 requests- Offline access to content
- Apple Watch integration for the calculator
- More detailed and up-to-date information on procedures and conditions
In-app purchases
GasWork.com AA
No in-app purchases
Master Anesthesia
- Master Anesthesia Contributor7 Days trial$69.991 Year
- Full Access CE7 Days trial$449.001 Year
- Module Unlock$24.99
- Course Unlock$99.00
- Master Anesthesia One Time$99.99
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- One-Time$149.99
- Course Unlock$449.00
Questions
Is GasWork.com AA free?
Is Master Anesthesia free?
Which has better reviews, GasWork.com AA or Master Anesthesia?
Do GasWork.com AA or Master Anesthesia have ads?
Which is updated more often, GasWork.com AA or Master Anesthesia?
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