# SSRI QT Tracker

> QT/QTc from your Health ECGs

Canonical page: [https://chrome-stats.com/d/id6787081554](https://chrome-stats.com/d/id6787081554)

## Overview

- **ID:** `id6787081554`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Peter Holzhauser
- **Category:** Medical
- **Version:** 1.0
- **Last updated:** 2026-07-14
- **First published:** 2026-07-14
- **Size:** 30 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/ssri-qt-tracker/id6787081554)
- **Website:** [https://pit711.github.io/qt-tracker-legal/](https://pit711.github.io/qt-tracker-legal/)
- **Privacy policy:** [https://pit711.github.io/qt-tracker-legal/privacy.html](https://pit711.github.io/qt-tracker-legal/privacy.html)

## Description

Keep an eye on your QT/QTc interval when starting an SSRI – automatically from your Health ECG data, entirely on your iPhone.

QT Tracker automatically analyzes your Health ECG data and computes the QT and QTc interval – ideal for keeping an eye on your heart's repolarization when starting an SSRI or other QT-prolonging medication.

• Automatic import of your ECGs from Apple Health – entirely on-device
• Precise QT measurement using the tangent method on an averaged, low-noise heartbeat
• QTc via Fridericia, Bazett, Framingham and Hodges
• Trend chart with normal-range thresholds and baseline comparison
• Resting heart rate and HRV (SDNN) trends from Apple Health
• Store your medications and therapy start date
• Measurement reminders for regular ECGs
• Export a doctor's report as PDF – with curves, table and measurement points
• 100% offline: no cloud, no accounts, your data is never shared

How it works: Record an ECG with your smartwatch. QT 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: QT 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.

## Rankings

- #1,153,948 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6787081554)