INTER:VALS - Interval Timer

Interval training, dead simple

Only for iPhone

$0.99 · Designed for iPhone. Not verified for macOS.

iPhone

Tap once, start training. Voice-coached intervals that keep running with your phone locked — 30s/90s beginners through Norwegian 4×4 and Tabata. Interval training, dead simple. Open the app, tap Start, and you're training inside ten seconds — no account, no subscription, no ads. SPOKEN CUES, SCREEN LOCKED Lock your phone and pocket it. Spoken cues and beeps mark every work, rest, and halfway point through your whole session, with a Live Activity countdown on your lock screen and Dynamic Island. PROVEN PROTOCOLS OR YOUR OWN Beginner 1:2, Classic Tabata, and Norwegian 4×4 built in — or set your own work, rest, rounds, warmup, and cooldown, and save it. TRACK WHAT MATTERS • Live heart rate from Apple Watch during workouts • Optional GPS distance and pace for outdoor sessions • Sessions written to Apple Health, closing your rings • Streaks, weekly targets, and a 4-week consistency chart • PR detection — know when you beat your best • 12-minute Cooper test to estimate your VO₂ max PRIVATE BY DESIGN No cloud, no account, no analytics SDKs. Your health data never leaves your phone. One price. Everything included. Forever.

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The developer, RICHARD PAUL HOPKINS, 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
    • RICHARD PAUL HOPKINS
    Size
    • 3 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 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.
    Location
    • This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Melodic Development
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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