Regional Anesthesia Reference vs Anesthesiologists
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Regional Anesthesia Reference
This app offers a quick reference for regional nerve block placement using ultrasound. It includes detailed anatomy, patient positioning, and technique videos, along with a local anesthetic drug calculator.
- Ultrasound guidance for nerve blocks
- Anatomy and positioning guides
- Block placement technique videos
- Local anesthetic drug calculator
- List of current blocks
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Regional Anesthesia Reference provides a quick look at the anatomy, positioning, and techniques for placing regional nerve blocks under ultrasound guidance. This includes ultrasound images and anatomic descriptions, images of patient positioning, and videos of block placement. Current blocks include: Interscalene Supraclavicular Infraclavicular Axillary Femoral Adductor Canal Suprainguinal Fascia Iliaca TAP Rectus Sheath Sciatic (Popliteal) A local anesthetic drug calculator is also included for assistance with calculating maximum dosages and percent of max dose delivered for a given patient. This is a weight based calculator using dosages from Miller's Anesthesia or Morgan and Mikhail.
Anesthesiologists
This medical app provides quick calculations for adult and pediatric anesthesia, including drug dosing and airway management based on patient weight and age. It's a valuable tool for anesthesiologists, CRNAs, physicians, and medical students.
- Adult and pediatric anesthesia calculations
- Drug dosing (IM, RSI, infusions)
- Airway management tools
- Calculations based on patient weight and age
- Obstetric drug information
- Continuous updates
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Anesthesiologist is designed to help quickly calculate adult and pediatric anesthesia related information. Useful for anesthesiologists, CRNA, ER and critical care physicians, as well as medical students, residents, and fellows. Drug dosing and airway management information is calculated on the basis of patient weight and age. The app is a work in progress; please see "What's new" for updates about included information. Airway: Mask size Laryngoscope blade size Endotracheal tube size Laryngeal mask airway (LMA) size and ETT it will admit Drugs including IM and rapid sequence induction dosing: Succinylcholine Rocuronium Cisatracurium Vecuronium Propofol Etomidate Ketamine Thiopental Fentanyl Hydromorphone Morphine Ketorolac Acetaminophen Ondansetron Dexamethasone Metoclopramide Epinephrine Amiodarone Phenylephrine Ephedrine Midazolam Clonidine Glycopyrrolate Atropine Neostigmine Cefazolin Ceftriaxone Ampicillin Cefoxitin Clindamycin Gentamicin Vancomycin Infusions: Remifentanil Propofol Dopamine Dobutamine Epinephrine Isoproterenol Norepinephrine Milrinone Phenylephrine Vasopressin Nitroglycerin Nitroprusside Esmolol Obstetric drugs: Magnesium Oxytocin Methergine Carboprost (Hemabate) Terbutaline Copyright 2011 Vikas Shah. Disclaimer and warning: This application was written solely to be used as a helpful adjunct for professionally trained physicians and practitioners otherwise experienced in airway management and drug administration and dosing. The data is provided for informational purposes only and in no way should be construed as professional medical advice. If you don't know the drug, its side effects, and its pitfalls, don't use it! Care has been taken that no errors in calculation have been made, but all calculations must be verified by the user. Drug dosing given here is based on published doses, but in all cases drugs should be administered on a case by case basis and titrated to effect for the individual patient. In no case have individual patient differences been taken into account, and conditions including but not limited to renal disease, hepatic dysfunction, cardiovascular disease, pulmonary disease, metabolic diseases and mitochondrial diseases may impact dosing or safety in the use certain drugs. Neither the name of the copyright owner nor the name of this project may be used to endorse or promote products derived from this software without specific prior written permission. This software is provided by the copyright holder "as is" and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the copyright owner be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage. In places where such liabilities cannot be waived or disclaimed, liability shall not exceed the retail cost of the application to the user of the application. Use of this app implies agreement to these terms and conditons. If you do not agree with these terms and conditions, delete this applicaton from your device.
Screenshots
Verdict
The clearest difference is update cadence: Regional Anesthesia Reference at every 5 months against Anesthesiologists's every 17 months. Regional Anesthesia Reference also leads on ratings volume (32 vs 5) and iOS requirement (8.0 vs 13.0). Anesthesiologists's advantage is review sentiment (100% vs 89%). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Regional Anesthesia Reference against 5.0 for Anesthesiologists. That said, the two scores are not equally well evidenced: Regional Anesthesia Reference has 32 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 89% of Regional Anesthesia Reference's written reviews are positive against 100% of Anesthesiologists's.
Regional Anesthesia Reference ships an update every 5 months, Anesthesiologists every 17 months. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.
| Parameter | Regional Anesthesia Reference | Anesthesiologists |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (32 ratings) | 5.0 (5 ratings) |
| Positive reviews | 88.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 32 — better | 5 |
| Update frequency | Every 5 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 89 MB | 10 MB |
| Age rating | 17+ | 17+ |
| Developer | University Of Washington | Vikas O'Reilly-Shah |
Customer experience
Regional Anesthesia Reference
Anesthesiologists
In-app purchases
Regional Anesthesia Reference
No in-app purchases
Anesthesiologists
No in-app purchases
Questions
Is Regional Anesthesia Reference free?
Is Anesthesiologists free?
Which has better reviews, Regional Anesthesia Reference or Anesthesiologists?
Do Regional Anesthesia Reference or Anesthesiologists have ads?
Which is updated more often, Regional Anesthesia Reference or Anesthesiologists?
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