Comparison

arrhythmia vs Trust

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

Trust

This app helps healthcare professionals securely store and manage all their professional credentials, including licenses and certifications. It provides timely expiry alerts to prevent lapses and allows easy sharing of documents with employers, ensuring you're always prepared to work.

Highlights
  • Securely store licenses and certifications
  • Set expiry alerts for credentials
  • View credential status at a glance
  • Export and share credentials
  • Track multiple credential types
Read full description

The free credential wallet for nurses and EMTs. Keep your licenses, BLS, ACLS, PALS, and NREMT credentials securely on your device, protected by Face ID or Touch ID. Get reminders 90, 60, 30, and 7 days before expiration, so nothing lapses. Add a license or card in about 30 seconds. Set your own expiry alerts. Export a PDF when a facility or agency asks. No account required. We never see what’s inside. What you can store • State RN, LPN, and compact (NLC) licenses • EMT, paramedic, and NREMT cards • BLS, ACLS, PALS, and other AHA cards • Specialty certs (CCRN and the rest of the stack) Built for the people who actually reviewed it: “licenses and other documents,” “notifications before they expire,” “export a PDF.” Not a quiz app. Not an employer dashboard. Free. No in-app purchases. On-device. Face ID. Need the renewal rules for your board? Find guides and a compact renewal checker at https://gettrustapp.com/renew

Screenshots

arrhythmia4 screens
Trust4 screens

Verdict

The call

The clearest difference is rating: Trust at 4.8 against arrhythmia's 4.1. Trust also leads on review sentiment (83% vs 44%) and in-app purchases (none vs 3). arrhythmia's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (17.6 vs 26.0). 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. Trust asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Trust holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Trust has 706 ratings behind it against 113, so its average is the more settled of the two. Written reviews point the same way: 44% of arrhythmia's written reviews are positive against 83% of Trust's.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, Trust every 2 months. Both last shipped on October 21, 2026.

Scorecard7 real differences · 3 level
arrhythmia versus Trust: the parameters behind the verdict, then further details
ParameterarrhythmiaTrust
PriceFreeFree
Rating4.1 (113 ratings)4.8 (706 ratings) — better
Positive reviews43.9% of reviews83.0% of reviews — better
Number of ratings113706 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.6 — better26.0
Further details — not scored
Size159 MB39 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCVectorCare Inc.

Customer experience

arrhythmia

All ratings111 ratings
Positive80.2%
Neutral4.5%
Negative15.3%
Written reviews41 reviews
Positive43.9%
Neutral7.3%
Negative48.8%

Trust

All ratings703 ratings
Positive96.2%
Neutral1.6%
Negative2.3%
Written reviews53 reviews
Positive83.0%
Neutral1.9%
Negative15.1%

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

Trust

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

Trust

No in-app purchases

Questions

Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Is Trust free?
Trust is free to download, with no in-app purchases.
Which has better reviews, arrhythmia or Trust?
Trust is rated higher. arrhythmia averages 4.1 out of 5 from 113 ratings, while Trust averages 4.8 from 706 ratings.
Do arrhythmia or Trust have ads?
Neither arrhythmia nor Trust shows ads.
Which is updated more often, arrhythmia or Trust?
arrhythmia ships an update every 3 weeks, and Trust every 2 months. Most recently, arrhythmia was updated on October 21, 2026 and Trust on October 21, 2026.

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