Online Anaesthesia vs Master Anesthesia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Online Anaesthesia
Log your medical cases from various specialties, including operations, intensive care, and pain management. This app offers an easy-to-use interface for instant case viewing, adding, and updating. Cases can be added offline and synced later, with daily backups and local backup options for your data.
- Log cases from operations, regional anaesthesia, obstetrics, ICU, and pain management
- View, add, and update cases instantly
- Offline case logging with automatic syncing
- Daily database backups
- Local backup option
Read full descriptionHide full description
Online Anaesthesia is an application that allows anaesthetists to log their cases from operations, regional anaesthesia, obstetrics, intensive care and pain management. With our easy to use interface, you can view, add and update cases to your online logbook instantly. Cases can now be added offline and will be added to your online database when your next online.Our own databases are backed up on a daily basis and there is a feature for making your own local backups. Allows complete access to your online database to allow for greater ease of management of your database. Any questions or feed back, please email admin@onlineanaesthesia.com.
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
Read full descriptionHide 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
Verdict
The clearest difference is review sentiment: Master Anesthesia at 78% against Online Anaesthesia's 33%. Master Anesthesia also leads on rating (4.9 vs 2.0) and update cadence (weekly vs every 3 months). Online Anaesthesia's advantage is in-app purchases (none vs 7) and iOS requirement (9.0 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
Both are free to download. Master Anesthesia sells 7 in-app purchases, starting at $69.99 per year. Online Anaesthesia asks for nothing beyond the download.
Master Anesthesia holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: Master Anesthesia has 2K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Online Anaesthesia's written reviews are positive against 78% of Master Anesthesia's.
Online Anaesthesia ships an update every 3 months, Master Anesthesia weekly. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.
| Parameter | Online Anaesthesia | Master Anesthesia |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) | 4.9 (2K ratings) — better |
| Positive reviews | 33.3% of reviews | 78.5% of reviews — better |
| Number of ratings | 3 | 2K — better |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Best chart rank | — | #194 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 66 MB | 69 MB |
| Age rating | 17+ | 12+ |
| Developer | Arjus Limited | Matthew Willis |
Customer experience
Online Anaesthesia
Master Anesthesia
Bugs and requests
Online Anaesthesia
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
Online Anaesthesia
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
Show 2 moreShow fewer
- One-Time$149.99
- Course Unlock$449.00
Questions
Is Online Anaesthesia free?
Is Master Anesthesia free?
Which has better reviews, Online Anaesthesia or Master Anesthesia?
Do Online Anaesthesia or Master Anesthesia have ads?
Which is updated more often, Online Anaesthesia or Master Anesthesia?
Other comparisons
