Comparison

ASCAR vs Zentobox

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

Head to head
About

ASCAR

This app provides a comprehensive, up-to-date library of cognitive aids for anaesthetists to support planning and crisis response in operating theatres. It features a paediatric dose calculator and advanced search functionality for quick access to critical information, even offline.

Highlights
  • Complete ASCAR library
  • Paediatric Dose Calculator
  • Offline access
  • Advanced search function
  • Automatically updated aids
Features
Read full description

Integrate cognitive aids into your anaesthetic practice today! The ASCAR app has been designed by clinicians for clinicians with the aim of supporting Operating Theatre (OT) teams to plan and brief for complex cases effectively as well as respond appropriately to crises. The app allows you to carry in your pocket, the ever expanding library of ASCAR cognitive aids – so they are available in their most up-to-date version on your device whenever and wherever you are. Just select the subspecialty to locate the cognitive aid you are looking for… or, alternatively, use our advanced search function. The next time you find yourself in an OT full of responding staff, why not contribute by opening the app to assist the team in focusing on the clinical priorities and avoiding blindspots. Features: β€’ Complete ASCAR library: automatically updated suite of cognitive aids from the ASCAR group across the whole array of anaesthetic sub-specialties. β€’ Paediatric Dose Calculator: Proprietary paediatric anaesthesia calculator to assist you with looking after our most vulnerable patients. β€’ Offline access: all files and our calculator remain accessible – even offline. But any updates will require an internet connection. β€’ Advanced search function: to minimise the time and facilitate the ergonomics of finding the aid that you need at that moment of crisis. About us: ASCAR stands for AnaeSthesia Cognitive Aids and Research. We are a not-for-profit Human Factors interest group that was conceived at the Anaesthetic Department, at the Royal North Shore Hospital in Sydney. Our mission is to support our colleagues to perform excellently during crises, by researching, designing, and testing cognitive aids that are optimised for our high stakes environment. Through an understanding of strong aesthetic design, team dynamics, and ergonomics our goal is to advance the creation of clinical support tools for anaesthetists worldwide.

About

Zentobox

Features
Read full description

Zentobox provides outsourced practice management services that improve your productivity, increase the profitability of your practice, and allow your business to function at peak efficiency. Our professional management team and specially designed technology can expertly manage the pain of your private practice and let you focus on your work again. This app is currently designed for our anaesthetists. It enables you to take a photo of a sticker, record anaesthetic item numbers according to the specialty of the surgeon and automatically suggests the start time and finish time of the case. After you have captured all of the stickers for the patients in a list and recorded item numbers and times through your session, submitting everything to us for processing is easy: just hit submit and a pdf is sent to both you and us so we can generate accounts for your review. When you take a photo of the sticker, the app will automatically crop the image for you so that any adjacent stickers or other information on the page is excluded from the pdf generated after the list. We will continue to add functionality and features to this app over time. Don’t forget to keep it up to date.

Screenshots

ASCAR4 screens
Zentobox4 screens

Verdict

The call

The clearest difference is update cadence: Zentobox at every 2 weeks against ASCAR's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ASCAR ships an update every 2 months, Zentobox every 2 weeks. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

Scorecard1 real difference Β· 7 level
ASCAR versus Zentobox: the parameters behind the verdict, then further details
ParameterASCARZentobox
PriceFreeFree
Positive reviews87.5% of reviewsβ€”
Update frequencyEvery 2 monthsEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.0 β€” better
Further details β€” not scored
Size22 MB68 MB
Age rating17+17+
DeveloperAnaesthesia Cognitive Aids and Research Group IncorporatedZento Group

In-app purchases

None

ASCAR

No in-app purchases

None

Zentobox

No in-app purchases

Questions

Is ASCAR free?
ASCAR is free to download, with no in-app purchases.
Is Zentobox free?
Zentobox is free to download, with no in-app purchases.
Do ASCAR or Zentobox have ads?
Neither ASCAR nor Zentobox shows ads.
Which is updated more often, ASCAR or Zentobox?
ASCAR ships an update every 2 months, and Zentobox every 2 weeks. Most recently, ASCAR was updated on November 3, 2026 and Zentobox on October 24, 2026.

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