Comparison

eVAS vs Emergency Medicine Guide

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

Head to head
About

eVAS

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The Electronic Visual Analog Scale (eVAS) is an ad-free iPad app that allows users to digitally track visual analog scores using 10 cm slider channels with various customizations and export saved data in tables. It can be used as a pain scale tracker or for any other application that requires user input tracking on a 10 cm visual analog scale.* eVAS was designed and developed in 2023 by Ryan Tennant in partnership with the Biomechanics and Injury Prevention Lab at the University of Waterloo. Funding for this app was provided through the Centre of Research Expertise for the Prevention of Musculoskeletal Disorders (CRE-MSD) that receives funding through a grant provided by the Ontario Ministry of Labour, Immigration, Training and Skills Development. We provide our users with various customizations unique to eVAS. Users can customize their collection settings by: - choosing one of three default images or uploading an image from their device to be stored locally, - specifying a session identification label, - setting left and right anchor label text, - selecting among 1-22 collection channels to record visual analog scores, - setting a recurring alert reminder within the app, and - exporting their data in .CSV or .XLSX format via e-mail or other file-sharing methods available on their device. Find the complete instructions and other information on using eVAS under the info icon on the Collection Settings screen. *The slider length is 10 cm β€” output scores range from 0 to 1 for each channel with a precision of 6 digits. The 10 cm visual analog scale and threshold values for clinically relevant pain have been previously evaluated in clinical research applications with humans, such as detecting clinically relevant low back pain [1,2]. The design of eVAS employs the 10 cm scale that has been validated in peer-reviewed literature [1-5]. Its design is further informed by current research validating the reliability and accuracy of clinically relevant pain using visual analog scales through touchscreen devices [3-5]. References: [1] https://pubmed.ncbi.nlm.nih.gov/24384659/ [2] https://pubmed.ncbi.nlm.nih.gov/12592542/ [3] https://pubmed.ncbi.nlm.nih.gov/26769149/ [4] https://pubmed.ncbi.nlm.nih.gov/30211382/ [5] https://pubmed.ncbi.nlm.nih.gov/12237213/ Medical Advice Disclaimer: DISCLAIMER: EVAS DOES NOT PROVIDE MEDICAL ADVICE The Contents of the App is for data collection and informational purposes only. No material on this app is intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen or making any medical decisions, and never disregard professional medical advice or delay in seeking it because of your use of eVAS.

About

Emergency Medicine Guide

Features
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A practical emergency medicine learning resource designed to support rapid assessment and decision-making in acute care settings. This resource covers common and critical emergency presentations across major systems, emphasizing structured approaches to assessment, stabilization, investigation, and initial management. High-yield content focuses on time-critical conditions and red-flag recognition. Material is organized for quick access and rapid revision, making it suitable for exam preparation, OSCEs, and real-world emergency scenarios. Clear frameworks help users prioritize actions and avoid common pitfalls during high-pressure situations. Suitable for medical students, junior doctors, EMTs, and clinicians preparing for emergency medicine examinations and improving confidence in acute patient care. Key Features: - Structured approach to emergency presentations - Acute care and resuscitation principles - Time-critical conditions and red flags - Exam-oriented summaries for rapid revision - Designed for OSCEs and emergency settings Disclaimer: This content is for educational purposes only and does not replace professional medical training or clinical judgment. Always rely on qualified healthcare professionals for patient care decisions. EULA - https://www.apple.com/legal/internet-services/itunes/dev/stdeula Terms of Use – https://rermedapps.com/terms-of-use Privacy Policy – https://rermedapps.com/privacy-policy

Screenshots

Emergency Medicine Guide4 screens

Verdict

The call

The clearest difference is in-app purchases: eVAS at none against Emergency Medicine Guide's 4. On price, ads, device support and iOS requirement 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. Emergency Medicine Guide sells 4 in-app purchases, starting at $2.99 per month. eVAS asks for nothing beyond the download.

Scorecard1 real difference Β· 5 level
eVAS versus Emergency Medicine Guide: the parameters behind the verdict, then further details
ParametereVASEmergency Medicine Guide
PriceFreeFree
Update frequencyEvery 3 daysβ€”
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPadiPhone, iPad β€” better
Requires iOS15.1 β€” better16.0
Further details β€” not scored
Size25 MB48 MB
Age rating4+17+
DeveloperRyan TennantRER MedApps

In-app purchases

None

eVAS

No in-app purchases

4 purchases

Emergency Medicine Guide

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Yearly3 Days trial$24.991 Year
One-time2
  • Lifetime Access - 50% Off$24.99
  • Lifetime Access$49.99

Questions

Is eVAS free?
eVAS is free to download, with no in-app purchases.
Is Emergency Medicine Guide free?
Emergency Medicine Guide is free to download, with in-app purchases available.
Do eVAS or Emergency Medicine Guide have ads?
Neither eVAS nor Emergency Medicine Guide shows ads.

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