HIITKO - HIIT & Tabata Timer

Turn any workout into a guided interval session. HIIT Timer is a fast, focused interval timer for HIIT, Tabata, EMOM, circuit training, boxing and MMA rounds, and running intervals - with clear audio cues, vibration, and a full-screen display you can read from across the room. Set your work and rest once, press start, and let the timer run the whole session. Bodyweight, kettlebells, a heavy bag or the track - it just works. No sign-up, no ads. ⏱️ READY-TO-GO PRESETS • Tabata - 20s work / 10s rest × 8 • Beginner HIIT • Norwegian 4×4 - classic VO2 max intervals • EMOM Strength • Boxing, Muay Thai & MMA rounds 🛠️ CUSTOM WORKOUT BUILDER • Set warm-up, work, rest, rounds and cool-down • Add longer recovery intervals • Adjustable pre-workout countdown • Exercise mode - name each move and the timer runs them in order • Colour-code your workouts and save them 🔔 AUDIO & FEEDBACK • Sound packs: classic beeps, boxing bell, soft pulse, spoken countdown • Countdown beeps for the final seconds • Vibration on every phase change • An animated warm-up so you know when to start 📊 PROGRESS THAT KEEPS YOU COMING BACK • Weekly goal ring - set a target and hit it • Activity chart and a GitHub-style streak grid • Current & best streak, completion rate, personal records • Full workout history and shareable session cards • Quick Start - repeat your last workout in one tap 🎨 MADE TO LOOK GOOD • Light, dark and AMOLED pure-black themes • Ten accent colour themes - the whole app, charts included, recolours to match • Screen stays awake during a session • Optional Do Not Disturb while training ⭐ PRO • Daily workout reminder - your time, your days, skips days you've already trained • Quick Start home-screen widget - start a session without opening the app • Unlimited custom workouts • Every sound pack and accent colour 💪 PERFECT FOR HIIT and Tabata workouts • EMOM circuit training • boxing, kickboxing, Muay Thai and MMA rounds • CrossFit-style WODs • running and cycling intervals • stretching and mobility • home and gym sessions Opens instantly. Starts your workout in two taps. Every setting has a sensible default, so you can train now and fine-tune later. Download HIIT Timer - the interval timer that makes every round count.