VO2Cue

Eyes-Free 4×4 Interval Coach

$1.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.

Stop watching the clock. Start owning every interval. VO2Cue is an eyes-free interval coach for Apple Watch and iPhone. Follow clear timers, haptics, tones, and spoken cues while swimming, running, cycling, rowing, or training in the gym. With Apple Watch, live heart-rate guidance helps you follow a target range through every hard effort and recovery. TRAIN IN YOUR RANGE See your live heart rate and target range on Apple Watch and iPhone. A clear range slider shows whether your heart rate is below, within, or above your target. • Targets change between hard and recovery intervals • Enter your known maximum heart rate or estimate it from your age • Customize your hard and recovery ranges • Hear “Heart rate up,” “Heart rate down,” or “Heart rate good” at halfway when fresh Watch readings and heart-rate cues are available • Follow your BPM line across workout cycles alongside target guidance lines • Review recorded heart-rate graphs in your workout history Live heart rate and workout graphs require Apple Watch and Health permissions. The iPhone interval timer works without a Watch. THE CLASSIC NORWEGIAN 4×4 Start with the classic 35-minute preset: • 10-minute warm-up • Four 4-minute hard intervals • 3-minute active recoveries between hard intervals • Add an optional cooldown VO2Cue tells you when to work, recover, and finish—so you can focus on your effort instead of doing timer math. YOUR WORKOUT, YOUR WAY Create and save custom workout profiles with control over: • Warm-up, work, recovery, and cooldown durations • Number of rounds and countdown length • Activity type • Heart-rate targets and guidance • Haptics, tones, and spoken cues • Halfway notifications • Custom labels such as Sprint, Hard, Recover, Easy, or Jog Spoken cues are enabled by default for new workouts. Choose the combination of cues that suits your training. APPLE WATCH AND IPHONE, TOGETHER Run your workout from your wrist. Start, pause, resume, skip, or end a session directly from Apple Watch, with workout state and live heart rate mirrored on iPhone. Distinct haptic cues help you recognize countdowns and phase changes without interrupting your stride, stroke, or rhythm. iPhone audio continues with the screen locked. CLEAR WHEN THE EFFORT GETS HARD Large timers, clear phase labels, and heart-rate range markers make your workout easy to follow. Important changes are never communicated by color alone. TRACK YOUR MOMENTUM Set a weekly active-minute goal and follow your progress in the app and Home Screen widgets. Review recent workouts, actual active minutes, and recorded Watch heart-rate graphs. Optionally save completed workouts to Apple Health. If Health access is unavailable or declined, the timer and local history continue to work. PRIVATE BY DEFAULT Your training belongs to you. • No account required • No ads or third-party tracking • No analytics SDK or backend • Profiles and history stay on your devices • Health access is controlled through Apple Health permissions ACCESSIBLE BY DESIGN VO2Cue includes VoiceOver-friendly controls, Dynamic Type support, high-contrast layouts, reduced-motion support, and audio, haptic, and visual alternatives for important workout events. Set your workout, find your range, and let VO2Cue guide the rest. Standard EULA - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

We've brought you heart rate range monitoring! set your max heart rate and use your Apple Watch to make sure you get the most out of each workout.

Version 1.2

The developer, GREGORY COLTON ADAMS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    GREGORY COLTON ADAMS
    Size
    6.6 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    • VO2Cue Monthly Membership $1.99
    • VO2Cue Lifetime Access $19.99
    • Learn More
    Copyright
    © 2026 Greg Adams
  • Developer Website
  • Privacy Policy

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