# Holter Log > Event diary app for Holter monitor studies. (iPhone/iPad app by GEORGE N LOPOYDA.) - Source: https://appshunter.io/ios/app/holter-log/id6761610828 (this page in markdown: same URL + `.md`) - Developer: [GEORGE N LOPOYDA](https://appshunter.io/developer/1778027628) - Category: Utilities - Price: $0.99 - Age rating: 4+ - Requires: iOS 17.0 · 3 MB - Languages: American English - Released: 2026-04-07 - Data updated: 2026-09-07 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/holter-log/id6761610828/reviews.md ## What is Holter Log? Holter Log helps you keep a clear, fast event diary during a Holter monitor study. Log important events from your iPhone or Apple Watch in seconds, then review them by day or study week so they’re easier to compare with the monitor data later. Instead of trying to remember symptoms, activities, drinks, sleep times, or bathroom events after the fact, you can record them the moment they happen. Holter Log is built to be simple when you need it most: • Quick-log symptoms, activity, drinks, sleep, and bathroom events • Use Apple Watch for faster event logging on the go • Add custom “Other” entries when the preset options aren’t enough • Edit or delete entries anytime on iPhone • Review your timeline for today at a glance • Group history into 7-day study weeks based on your study start • Select specific days from a study week for review • Export, share, copy, and print selected logs for handoff Helpful for: • Daily symptom tracking during a Holter study • Matching your diary to heart monitor recordings • Preparing a cleaner handoff for a clinic or cardiology visit • Keeping a personal record of what happened and when Holter Log is designed as a quick companion log for ambulatory heart monitoring studies. It does not read your monitor data or provide medical advice. ## Key features - Quickly log symptoms and activities - Use Apple Watch for on-the-go logging - Add custom event entries - Edit or delete entries - Review event timeline - Group logs by study week - Export and share logs ## Chart rankings - #200 in Top Paid · Utilities (US App Store) ## Frequently asked questions about Holter Log ### What is Holter Log used for? Holter Log is designed to help you keep a clear and fast event diary during a Holter monitor study. It allows you to log symptoms, activities, and other events as they happen, making it easier to compare with your monitor data later. ### How much does Holter Log cost? Holter Log is a paid application, priced at $0.99. This one-time purchase grants you access to all its features for tracking your Holter monitor study events. ### What devices is Holter Log compatible with? Holter Log is available for iPhone, iPad, and Apple Watch. This allows for flexible logging and review of your events across your Apple ecosystem. ### Does Holter Log provide medical advice? No, Holter Log does not read your monitor data or provide any medical advice. It serves as a tool for you to record events, which can then be shared with your healthcare provider. ### How often is Holter Log updated? The latest version of Holter Log is 1.0.5, last updated on April 29, 2026. While specific update frequency isn't detailed, the app has received updates since its release on April 7, 2026. ### Can I add custom events to Holter Log? Yes, Holter Log allows you to add custom 'Other' entries when the preset options for symptoms, activity, drinks, sleep, and bathroom events are not sufficient. ### What is the age rating for Holter Log? Holter Log has an age rating of 4+. This indicates it is suitable for a wide range of users, including children, for its simple event logging functionality. ### How can I export my logs from Holter Log? You can export, share, copy, and print selected logs from Holter Log. This feature is helpful for preparing a cleaner handoff for your clinic or cardiology visit. ## Version history (last 3 releases) ### 1.0.5 — 2026-04-29 Holter Log is now clearer and more useful as a digital replacement for a paper Holter diary. This update adds: * A simple first-launch introduction explaining what the app is for * Real PDF report generation for cleaner handoff * PDF preview, sharing, and printing * Continued support for iPhone and Apple Watch event logging * General polish and usability improvements Holter Log does not read monitor data or provide medical advice. It is a simple event diary for recording symptoms, activities, drinks, sleep, and other events during a Holter study. ### 1.0.4 — 2026-04-16 This update makes Holter Log clearer and more polished. It adds a simple first-launch introduction that explains the app as a replacement for a paper Holter diary, and it refreshes the App Store screenshots with clearer text to better show the logging workflow. ### 1.0 — 2026-04-07 No release notes. ## More apps by GEORGE N LOPOYDA - [Last on the List](https://appshunter.io/ios/app/last-on-the-list/id6756919188) - [ABPM Log](https://appshunter.io/ios/app/abpm-log/id6761732513) - [sendward](https://appshunter.io/ios/app/sendward/id6761863472) - [pH Study Log](https://appshunter.io/ios/app/ph-study-log/id6761913834) - [Seizure Pages](https://appshunter.io/ios/app/seizure-pages/id6762241820) All apps by GEORGE N LOPOYDA: https://appshunter.io/developer/1778027628 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*