Comparison

GasWork.com CRNA vs Master Anesthesia

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GasWork.com CRNA

This app connects Certified Registered Nurse Anesthetists with thousands of job opportunities nationwide. Easily search by state or position type, mark jobs as read, and save favorites for later review. Inquire directly about positions via email or web.

Highlights
  • Thousands of CRNA job listings
  • Search by state and position duration
  • Mark jobs as read
  • Save job posts
  • Inquire by email or web
  • Mirrors website content
Read full description

Since 1996, GasWork.com has continued to be the go to place for CRNA jobs. CRNA = Certified Registered Nurse Anesthetist Our free GasWork.com CRNA iPhone app continually mirrors the website so you can peruse the thousands of CRNA 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).

About

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.

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
Currently charting
Read full description

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

GasWork.com CRNA4 screens
Master Anesthesia4 screens

Verdict

The call

The clearest difference is rating: Master Anesthesia at 4.9 against GasWork.com CRNA's 4.4. Master Anesthesia also leads on update cadence (weekly vs every 6 months) and review sentiment (78% vs 50%). GasWork.com CRNA's advantage is in-app purchases (none vs 7) and iOS requirement (10.0 vs 15.1). On price, 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Master Anesthesia holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: Master Anesthesia has 2K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 50% of GasWork.com CRNA's written reviews are positive against 78% of Master Anesthesia's.

UpkeepUpdate frequency

GasWork.com CRNA ships an update every 6 months, Master Anesthesia weekly. The most recent releases landed on September 25, 2026 and October 15, 2026 respectively.

Scorecard8 real differences · 3 level
GasWork.com CRNA versus Master Anesthesia: the parameters behind the verdict, then further details
ParameterGasWork.com CRNAMaster Anesthesia
PriceFreeFree
Rating4.4 (12 ratings)4.9 (2K ratings) — better
Positive reviews50.0% of reviews78.5% of reviews — better
Number of ratings122K — better
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
Best chart rank—#188 — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.0 — better15.1
Further details — not scored
Size38 MB69 MB
Age rating4+12+
DeveloperGasWork.com-Inc.Matthew Willis

Customer experience

GasWork.com CRNA

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Master Anesthesia

All ratings1,995 ratings
Positive97.7%
Neutral0.7%
Negative1.6%
Written reviews93 reviews
Positive78.5%
Neutral5.4%
Negative16.1%

Bugs and requests

GasWork.com CRNA

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

None

GasWork.com CRNA

No in-app purchases

7 purchases

Master Anesthesia

Subscriptions2
  • Master Anesthesia Contributor7 Days trial$69.991 Year
  • Full Access CE7 Days trial$449.001 Year
One-time5
  • Module Unlock$24.99
  • Course Unlock$99.00
  • Master Anesthesia One Time$99.99
Show 2 more
  • One-Time$149.99
  • Course Unlock$449.00

Questions

Is GasWork.com CRNA free?
GasWork.com CRNA 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, GasWork.com CRNA or Master Anesthesia?
Master Anesthesia is rated higher. GasWork.com CRNA averages 4.4 out of 5 from 12 ratings, while Master Anesthesia averages 4.9 from 2K ratings.
Do GasWork.com CRNA or Master Anesthesia have ads?
Neither GasWork.com CRNA nor Master Anesthesia shows ads.
Which is updated more often, GasWork.com CRNA or Master Anesthesia?
GasWork.com CRNA ships an update every 6 months, and Master Anesthesia weekly. Most recently, GasWork.com CRNA was updated on September 25, 2026 and Master Anesthesia on October 15, 2026.

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