arrhythmia vs Trust
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- EKG interpretation practice
- Lead II simulation
- Study Mode with rhythm selection
- Game Mode for random rhythm identification
- Customizable rhythm sets
- Realistic rhythm variations
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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
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.
- Securely store licenses and certifications
- Set expiry alerts for credentials
- View credential status at a glance
- Export and share credentials
- Track multiple credential types
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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
Verdict
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
Both are free to download. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. Trust asks for nothing beyond the download.
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.
arrhythmia ships an update every 3 weeks, Trust every 2 months. Both last shipped on October 21, 2026.
| Parameter | arrhythmia | Trust |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (113 ratings) | 4.8 (706 ratings) — better |
| Positive reviews | 43.9% of reviews | 83.0% of reviews — better |
| Number of ratings | 113 | 706 — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 159 MB | 39 MB |
| Age rating | 17+ | 17+ |
| Developer | Single Sail Software, LLC | VectorCare Inc. |
Customer experience
arrhythmia
Trust
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
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- 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
arrhythmia
- Monthly7 Days trial$2.991 Month
- Yearly7 Days trial$19.991 Year
- Unlock All Rhythms (One-time Purchase)$4.99
Trust
No in-app purchases
Questions
Is arrhythmia free?
Is Trust free?
Which has better reviews, arrhythmia or Trust?
Do arrhythmia or Trust have ads?
Which is updated more often, arrhythmia or Trust?
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