# Pacing Guard: Interval Timer — Pacing for ME/CFS & Long COVID > Interval timer with voice and haptic cues for chronic fatigue management. (iPhone/iPad app by Kim Syversen.) - Source: https://appshunter.io/ios/app/pacing-guard-interval-timer/id6757980383 (this page in markdown: same URL + `.md`) - Developer: [Kim Syversen](https://appshunter.io/developer/1870072139) - Category: Health & Fitness, Utilities - Price: $1.99 - Age rating: 4+ - Requires: iOS 16.0 · 7 MB - Languages: American English - Released: 2026-01-21 - Data updated: 2026-08-15 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/pacing-guard-interval-timer/id6757980383/reviews.md ## What is Pacing Guard? Pacing Guard helps people with ME/CFS, Long COVID, fibromyalgia, and chronic fatigue follow structured activity-rest routines - without watching the clock. Voice cues, haptic feedback, with optional support of a Bluetooth heart rate strap tell you when to go and when to rest. You focus on living. The app keeps the rest. TIMER • Customizable GO and REST intervals (5 to 120 seconds) • Voice announcements at each phase transition • Countdown alerts in the final 5 seconds before switching • Haptic feedback and sound cues at phase changes • Smooth visual progress ring with phase colour coding • Works in the background with screen off HEART RATE MONITORING • Connects to any Bluetooth heart rate strap (Polar, Garmin, Wahoo, and others) • Aerobic threshold calculator to find your personal safe HR limit • Voice and haptic alerts when approaching or exceeding your limit • Configurable repeat alerts so you stay informed without being overwhelmed • Periodic heart rate announcements at configurable intervals • Time above HR limit tracked for every session, even with alerts muted SLEEP MONITORING • Long-press Start for overnight heart rate tracking • No voice cues, no alerts - continuous silent recording • Session max HR saved to history SESSION INSIGHTS • Live stats during any session - tap the live stats button • Post-session HR chart with exceedance breakdown • 8-week trend analysis with sparkline charts • Monthly pacing calendar showing your compliance at a glance • Export session data as CSV • Save sessions to Apple Health as workouts PRIVATE & OFFLINE • No accounts, no ads, no tracking • No subscriptions or hidden costs • All data stays on your device • Works fully offline ACCESSIBLE • Full VoiceOver support with descriptive labels • Dynamic Type for all text sizes • Respects Reduce Motion preference • Minimum 44pt tap targets • High Contrast mode compatible --- Disclaimer: Pacing Guard is a general-purpose interval timer and self-management aid. It is not a medical device and does not provide medical advice, diagnosis, treatment, or disease prevention. The app does not make any claims about health outcomes. Heart rate monitoring is provided for informational purposes only. Any routines followed using this app are self-directed and used at your own discretion. Always seek advice from a qualified healthcare professional regarding any medical condition. ## Key features - Customizable GO and REST intervals - Voice and haptic feedback for phase transitions - Bluetooth heart rate strap support - Aerobic threshold calculator - Offline and private operation - Session insights and trend analysis - Apple Health integration ## Chart rankings - #197 in Top Paid · Health & Fitness (US App Store) ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/pacing-guard-interval-timer/id6757980383/reviews.md ### 1/5 — Nicht praxistauglich *2026-03-08* Hier im Store sah die App ganz gut aus und erschien mir auch sinnvoll. Leider kann man sie nicht ausprobieren, sondern muss sofort kaufen. Die Ernüchterung folgte sofort: sie verbindet sich nicht mit der Apple Watch und synchronisiert sich auch nicht mit Health. Die Pacing / Rest Intervalle sind standardmäßig auf 30 Sekunden (!) eingestellt und können maximal auf 120 Sekunden erhöht werden. Was bitte soll man in solchen kurzen Zeiträumen tun? Ich hätte erwartet, dass man hier minutenweise einstellen kann und das in dieser Zeit, sagen wir 30 Minuten, die Herzfrequenz überwacht wird. Bei Überlastung sollten Warnungen kommen und zum Ablauf des Intervalls der Hinweis, dass nun Pause gemacht werden sollte. So, wie die App derzeit angeboten wird, ist sie in meinen Augen nutzlos und unterstützt (zumindest mich) nicht beim Pacing. Schade. ## Frequently asked questions about Pacing Guard ### What is Pacing Guard used for? Pacing Guard is designed to help individuals with conditions like ME/CFS and Long COVID manage their activity and rest periods. It provides structured routines using customizable intervals and feedback to prevent overexertion. ### Does Pacing Guard have ads? No, Pacing Guard is completely ad-free. The app prioritizes user privacy and a seamless experience by not including any advertisements. ### What devices does Pacing Guard support? Pacing Guard is available for iPhone and iPad. It is designed to work on these Apple devices. ### How much does Pacing Guard cost? Pacing Guard is a paid application, priced at $1.99. There are no subscriptions or hidden costs associated with its use. ### Can Pacing Guard track my heart rate? Yes, Pacing Guard can connect to any Bluetooth heart rate strap. It offers features like an aerobic threshold calculator and alerts when you approach or exceed your safe heart rate limit. ### Is Pacing Guard suitable for children? Pacing Guard has an age rating of 4+, making it suitable for a wide range of users. However, its primary use is for individuals managing chronic fatigue conditions. ### How often is Pacing Guard updated? The latest version of Pacing Guard is 1.6.4, which was last updated on March 25, 2026. Updates typically include improvements and new features based on user feedback and development cycles. ### Can I use Pacing Guard offline? Yes, Pacing Guard works fully offline. All your data is stored locally on your device, ensuring privacy and accessibility even without an internet connection. ## Version history (last 5 releases) ### 1.6.4 — 2026-03-25 - Minor under-the-hood improvements ### 1.6.3 — 2026-03-16 - Improved: HR chart scrub tooltip now shows wall clock time instead of elapsed seconds - Improved: Live stats sheet can expand to full screen for easier reading - Improved: Updated launch screen with tagline - Fixed: Stability and memory improvements ### 1.6.2 — 2026-03-15 - Improved: HR chart scrub tooltip now shows wall clock time instead of elapsed seconds - Improved: Live stats sheet can expand to full screen for easier reading - Improved: Updated launch screen with tagline - Fixed: Stability and memory improvements ### 1.6.1 — 2026-02-25 - Various bugfixes and improvements ### 1.6 — 2026-02-16 - New: Live stats during sessions — tap the info button to see real-time HR data - New: 8-week trend analysis with sparklines in session history - New: Vibration intensity slider for heart rate alerts - New: Horizontal scrolling on HR chart for long sessions - New: Sessions save to Health as workouts (opt-in) - Improved: Bolder, more noticeable heart rate alert vibrations - Improved: Backup sessions to iCloud (opt-in) ## Apps similar to Pacing Guard | App | Rating | Price | Category | | --- | --- | --- | --- | | [Long Covid & ME/CFS: PaceTank](https://appshunter.io/ios/app/long-covid-and-mecfs-pacetank/id6755208393) | 5.0 (3) | Free | Health & Fitness | | [Paciva](https://appshunter.io/ios/app/paciva/id6757721216) | — | Free | Health & Fitness | | [PaceME: Pacing & Energy](https://appshunter.io/ios/app/paceme-pacing-and-energy/id6760505520) | — | $8.99 | Health & Fitness | | [Metered: Energy Planner](https://appshunter.io/ios/app/metered-energy-planner/id6761761151) | 5.0 (3) | Free | Health & Fitness | | [Bendy \| Learn to Move](https://appshunter.io/ios/app/bendy-learn-to-move/id6740637862) | 5.0 (1) | Free | Health & Fitness | | [Studio Po \| Iyengar Yoga](https://appshunter.io/ios/app/studio-po-iyengar-yoga/id6754846289) | — | Free | Health & Fitness | ## More apps by Kim Syversen - [Respirix: HRV Breathing Coach](https://appshunter.io/ios/app/respirix-hrv-breathing-coach/id6758206591) - [Promptuary: AI Prompt Manager](https://appshunter.io/ios/app/promptuary-ai-prompt-manager/id6759801317) - [SpaceSift: Photo Cleaner](https://appshunter.io/ios/app/spacesift-photo-cleaner/id6760221975) - [Lull: White Noise Sleep Sounds](https://appshunter.io/ios/app/lull-white-noise-sleep-sounds/id6760701742) All apps by Kim Syversen: https://appshunter.io/developer/1870072139 --- *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 2026-08-15.*