One·Two is a free interval timer PWA for any workout format: HIIT, tabata, strength, cardio.
What makes it different:
• No ads, no registration, no account needed
• Works fully offline after the first visit
• Custom music tracks for work and rest phases separately
• All data stays on your device — nothing sent to servers
• Installs as an app on any phone without an app store
Simple idea: One = work, Two = rest. Set your intervals, add music, train.
