ECG Dongle vs QTc Tracker for SSRI & SNRI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ECG Dongle
Measure your heart rate and view it in real-time. Send your results to a cardiologist for recommendations and monitor your health. No prior medical or technical knowledge is required to use this application.
- Heart rate measurement
- Real-time viewing
- Send results to cardiologist
- Health monitoring
- User-friendly interface
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Измеряйте частоту сердечных сокращений, просматривайте в режиме реального времени, отправляйте результаты исследований врачу-кардиологу и получайте рекомендации! Следите за своим здоровьем и здоровьем своих близких. Для использования не требуется медицинского или технического образования. Функциональные возможности: - измерение частоты сердечных сокращений; - просмотр в режиме реального времени; - отправка врачу-кардиологу полученных результатов измерений через мобильное приложение. *Для работы с приложением необходимо приобрести устройство ECG Dongle, подключаемый с помощью OTG-кабеля.
QTc Tracker for SSRI & SNRI
This app analyzes ECG data from Apple Health to calculate QT and QTc intervals, helping users monitor heart repolarization, especially when taking QT-prolonging medications. It offers trend charts, medication tracking, and PDF reports for personal use.
- Automatic ECG import from Apple Health
- Precise QT measurement using tangent method
- Multiple QTc calculation methods
- Trend charts with normal ranges
- Medication and therapy start date tracking
- PDF doctor's report export
- 100% offline functionality
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QTc Tracker automatically analyzes your smartwatch ECGs from Apple Health and computes the QT and QTc interval – ideal for keeping an eye on your heart when starting, during and after SSRI therapy or other QT-prolonging medication. • Automatic import of your ECGs from Apple Health – optionally with a notification whenever a new ECG arrives • Precise QT measurement using the tangent method on an averaged, low-noise heartbeat • QTc via Fridericia, Bazett, Framingham and Hodges • Clear trend chart with zones (450 / 470 / 500 ms), baseline and trend line – for 1 month, 6 months, 12 months, the therapy or everything • Therapy start and end: baseline before the start, trend during therapy, recovery afterwards • Import medications and logged doses from Apple Health (iOS 26 or later) • Resting heart rate and HRV (SDNN) trends • Doctor's report as PDF: trend, ECG traces with measurement points, measurement table, medications with dose – in A4 or US Letter • Share cards for social media: “QT normal” – honest even when readings stand out • Measurement reminders, CSV export, light and dark mode, 31 languages • 100% offline: no cloud, no account, your data is never shared How it works: Record an ECG with your smartwatch. QTc Tracker reads it from Apple Health, averages the beats into a clean signal, and detects the QRS onset and T-wave end with the tangent method. From these it derives QT and the rate-corrected QTc values that you can follow over time. Important: QTc Tracker is not a medical device and does not replace a physician's ECG interpretation or diagnosis. The automatic measurement may differ from clinical assessment and is intended solely for your personal tracking. If you have symptoms or a QTc of 500 ms or more, seek medical advice, and never stop an SSRI on your own.
Screenshots
Verdict
The clearest difference is review sentiment: QTc Tracker for SSRI & SNRI at 100% against ECG Dongle's 29%. ECG Dongle's advantage is price (Free vs $0.99) and iOS requirement (9.0 vs 15.1). On update cadence, ads, in-app purchases 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
ECG Dongle is free to download; QTc Tracker for SSRI & SNRI costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | ECG Dongle | QTc Tracker for SSRI & SNRI |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 29.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 17 MB | 29 MB |
| Age rating | 4+ | 12+ |
| Developer | Nordavind | Peter Holzhauser |
Customer experience
ECG Dongle
QTc Tracker for SSRI & SNRI
In-app purchases
ECG Dongle
No in-app purchases
QTc Tracker for SSRI & SNRI
No in-app purchases
Questions
Is ECG Dongle free?
Is QTc Tracker for SSRI & SNRI free?
Do ECG Dongle or QTc Tracker for SSRI & SNRI have ads?
Which is updated more often, ECG Dongle or QTc Tracker for SSRI & SNRI?
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