Chirp Halo vs DoubleTime Timer

Dedicated to help you understand how to use the Chirp Halo Muscle Stimulator, as well as where to place the pads. To get the most relief and recovery, knowing where to place the pads is critical. Sometimes we feel pain in areas that aren't actually the problem. We've combined science behind trigger point pain referral patterns along with TENS/EMS tech for the world's most user friendly muscle stim experience.

DoubleTime is a clean, high-contrast dual-interval timer built for workouts, Pomodoro focus sessions, physical therapy, cooking, and any routine that alternates between two timed phases. Set Timer 1 and Timer 2 once—from 1 second up to 60 minutes—and press Start. When Timer 1 finishes, it plays its own custom alert sound and automatically starts Timer 2. When Timer 2 finishes, it cycles right back to Timer 1—repeating continuously or stopping automatically after your target number of cycles. KEY FEATURES • Dual Alternating Timers: Automatically cycle between Timer 1 and Timer 2 with zero manual restarts. • Second-Level Precision: Set any interval from 0:01 to 60:00 in both portrait and landscape orientations. • Custom Labels & One-Tap Presets: Name each phase ("Work" / "Rest", "Focus" / "Break") or start immediately with built-in presets for Pomodoro (25m/5m), HIIT (45s/15s), 20-20-20 Eye Rest, and Classic 1:1. • Target Cycle Limits & Skip Phase: Run infinite loops or auto-stop after 1–99 cycles, and skip forward to the next phase anytime. • 18 Curated Alert Sounds + Vibration & Silence: Assign distinct bird calls, bells, chimes, vibration-only, or visual-only Silence to each timer so you always know which phase just ended without looking at the screen. • Music-Friendly & Reliable in the Background: Alerts mix cleanly over your music or podcasts without pausing playback, and background notifications preserve each timer's custom label and sound. • Apple Watch App Included: Control timers directly from your wrist with Digital Crown duration pickers, automatic iPhone configuration sync, extended wrist-down runtime, and distinct haptic patterns for each timer. • Privacy First: Zero tracking, zero ads, and no account required.