RoundBoss: Interval Timer

A voice-first interval timer. Say your workout, AI builds it in under 1 second. No menus, no scrolling. A round timer for boxing, MMA, HIIT, Tabata and focus work. Just speak and train.

Other timers make you scroll through menus, tap through screens and waste time before you even start training. RoundBoss is different. Hold the button, say "5 rounds, 3 minutes, 1 minute rest" and your session is ready before you finish your sentence.

INTERVAL TIMING IN UNDER ONE SECOND
Hold. Speak. Train. That's it. AI parses your voice in real time and builds your interval timer instantly. No menus. No scrolling. No typing. Just say what you want and go. From voice to timer in under a second, every single time.

ZERO-FRICTION SETUP
Say anything natural: "Boxing 12 rounds," "Tabata 8 rounds 20 seconds on 10 off," "Quick 3 round warmup." The AI understands it all. Review your config, tap start, and you're training. From idea to interval in seconds.

PRECISION TIMER ENGINE
Once you're in, the timer is relentless. Timestamp-based accuracy with distinct audio cues for every phase: prep, round, warning and rest. Circular progress ring, round indicators, haptic feedback on every transition, and keep-screen-awake so you never break focus.

17 SOUND THEMES & VOICE COACHES
Classic boxing bells. Cinematic war drums. Zen garden chimes. Arcade bleeps. Motivational voice coaches who push you through every round. 17 themes, each with its own personality, loudness-mastered to cut through music and gym noise.

SPOTIFY-STYLE TEMPLATE LIBRARY
Browse 49 designed presets across 7 categories: Boxing, MMA, Muay Thai, HIIT, Tabata, mindfulness, focus and more. Save your own custom templates. One tap to launch any workout you've built before, because instant recall matters as much as instant setup.

10 VISUAL THEMES
Neon lime Boss Mode. Crimson Heat. Deep Ocean. Ice Storm. Zen Trainer. Each theme transforms the entire app, colors, surfaces and accents, across every screen.

RECORD YOUR OWN VOICE (PREMIUM)
Voice Notes let you attach your own recording to any round, rest, warm-up or finish. Your voice, your coach's, or your kid's, firing at exactly the right second. Recordings stay on your device and are stripped from anything you share.

BUILT FOR SPEED. BUILT FOR ATHLETES.
- Voice-first setup, interval timing in under 1 second
- AI-powered configuration, just speak naturally
- Per-round custom durations for pyramids and descending rests
- Haptic feedback on every phase change
- Workout history synced to the cloud
- Workout reminders and streak tracking
- Weekly training wrap you can share
- Apple Sign-In and Google Sign-In

FREE TO USE
RoundBoss is free with the signature Boss Mode theme and default sound pack. Unlimited voice timer creation, unlimited training, all 49 templates and 3 saved custom timers are yours at no cost.

ROUNDBOSS PREMIUM
- 16 premium sound themes and voice coaches
- 9 exclusive visual themes
- Unlimited custom timer configurations
- Clone and remix any template
- Voice Notes, record yourself into any phase
- Weekly training wraps

Premium is a subscription: $4.99/month, or $29.99/year with a 7-day free trial. Prices may vary by country. Your subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in Google Play > Subscriptions.

Whether you're a boxer timing 12 championship rounds, an MMA fighter drilling 5-minute sessions, or just crushing a quick HIIT circuit, RoundBoss gets you from zero to training in seconds.

Interval Timers, Instantly.

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