Comparison

arrhythmia vs UTSW BioTel Guidelines

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

Head to head
About

arrhythmia

Practice interpreting EKGs in lead II with realistic simulations. Choose rhythms to study or test your knowledge in a game mode. Ideal for healthcare professionals to hone their diagnostic skills.

Highlights
  • EKG interpretation practice
  • Lead II simulation
  • Study Mode with rhythm selection
  • Game Mode for random rhythm identification
  • Customizable rhythm sets
  • Realistic rhythm variations
Read full description

Practice reading EKGs in lead II Basic EKG interpretation is more accurately described as an intermediate level skill that takes time, practice and refreshing. Whether you are a doctor, nurse, EMT or tech your ability to read and pickup on basic EKG changes in real time is essential. Practice with an app that actually looks like what you see at work. Use the app’s ‘Study Mode’ to choose one or multiple rhythms to view and compare. A brief description of each rhythm is provided, you can also pause and restart rhythms. Delete and add specific rhythms as desired. Rates, amplitudes and widths of the rhythms are dynamically set which provides for a more realistic simulation and variation within each type of rhythm. Use the app’s ‘Game Mode’ to challenge yourself to identify rhythms presented randomly in lead II. If desired, you can also custom specify which rhythms to include in the game. Access to Study Mode and Game Mode requires a subscription via in-app purchase. Please Read: The purpose of this app is not to teach basic EKG interpretation but rather to practice basic EKG interpretation. If you don’t know basic EKG interpretation seek out additional resources such as classes, books, online materials and mentors to learn more and further your understanding. Note: The cardiac rhythms presented by the app are simulated approximations. There is NO guarantee to the accuracy of rhythms presented. While accuracy is not guaranteed it is a goal. Please report errors, suggestions or general feedback to: feedback@arrhythmiaApp.com. Arrhythmia uses the standard Apple Terms of Use End User License Agreement (EULA): http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

UTSW BioTel Guidelines

Access medical protocols and supporting materials offline with quick search and customizable notes. This app is regularly updated to ensure content is current and always available on your device.

Highlights
  • Offline access to protocols
  • Quick indexed lookup
  • Search titles and text
  • Favorites tab
  • Customizable notes
  • Regular updates
Read full description

UTSW BioTel Guidelines provides quick offline access to the BioTel protocols and supporting materials. Features include: •Quick indexed lookup of content in a matter of seconds •Search titles and text •Favorites tab for quick access of what's important to you •Updated regularly, ensuring content is up-to-date •Customizable notes for each individual entry •Always with you as long as you have your device and never fades or tears

Screenshots

arrhythmia4 screens
UTSW BioTel Guidelines4 screens

Verdict

The call

The clearest difference is rating: UTSW BioTel Guidelines at 5.0 against arrhythmia's 4.1. UTSW BioTel Guidelines also leads on in-app purchases (none vs 3) and iOS requirement (15.0 vs 17.6). arrhythmia's advantage is update cadence (every 3 weeks vs every 11 months) and ratings volume (113 vs 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. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. UTSW BioTel Guidelines asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

UTSW BioTel Guidelines holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: arrhythmia has 113 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, UTSW BioTel Guidelines every 11 months. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
arrhythmia versus UTSW BioTel Guidelines: the parameters behind the verdict, then further details
ParameterarrhythmiaUTSW BioTel Guidelines
PriceFreeFree
Rating4.1 (113 ratings)5.0 (1 ratings) — better
Positive reviews43.9% of reviews—
Number of ratings113 — better1
Update frequencyEvery 3 weeks — betterEvery 11 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size159 MB28 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCAcid Remap LLC

Bugs and requests

arrhythmia

Reported bugs

2 issues
  • App no longer works after iOS update
  • App does not work on Apple Watch

Requested features

11 requests
  • Add more common and important rhythms (torsades, WPW, STEMI, accelerated/tachycardic idioventricular, WAP, MAT)
  • Option to read as a 12-lead instead of a single rhythm line
  • Add variations to rhythms
  • Add Left Bundle Branch Block
  • Add a 12-lead option
Show 6 more
  • Add more examples for each rhythm
  • Add a list view option for rhythms
  • Add an explanation/rationale for correct/incorrect answers
  • Add an animation showing what is happening in the heart when an answer is wrong
  • Add tutorial or information on how to use the app
  • Add 'Non-Conducted' PACs and similar rhythms

UTSW BioTel Guidelines

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

arrhythmia

Subscriptions2
  • Monthly7 Days trial$2.991 Month
  • Yearly7 Days trial$19.991 Year
One-time1
  • Unlock All Rhythms (One-time Purchase)$4.99
None

UTSW BioTel Guidelines

No in-app purchases

Questions

Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Is UTSW BioTel Guidelines free?
UTSW BioTel Guidelines is free to download, with no in-app purchases.
Which has better reviews, arrhythmia or UTSW BioTel Guidelines?
UTSW BioTel Guidelines is rated higher. arrhythmia averages 4.1 out of 5 from 113 ratings, while UTSW BioTel Guidelines averages 5.0 from 1 ratings.
Do arrhythmia or UTSW BioTel Guidelines have ads?
Neither arrhythmia nor UTSW BioTel Guidelines shows ads.
Which is updated more often, arrhythmia or UTSW BioTel Guidelines?
arrhythmia ships an update every 3 weeks, and UTSW BioTel Guidelines every 11 months. Most recently, arrhythmia was updated on October 21, 2026 and UTSW BioTel Guidelines on October 20, 2026.

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