Arc Timer: HIIT & Gym Tracker

Arc Timer helps you plan, run and track both interval training and strength workouts in one place. Build structured HIIT workouts, create gym training plans, run guided sessions and keep a complete history of your training over time. HIIT WORKOUTS Create, edit, search, favorite and organize interval workouts built around blocks, sets, exercises, durations and rest periods. Start a quick workout without saving it first or build a reusable library for your regular training sessions. Run workouts through work, rest, set-rest and preparation phases with clear progress tracking and deliberate controls designed to avoid accidental interruptions. GYM TRAINING Create gym plans with sections, exercises and target sets. Start training sessions from existing plans or build sessions exercise by exercise. Track sets, weight, reps, duration, distance and RPE. Review completed sessions, exercise history and personal records to monitor progress over time. TRACK TRAINING HISTORY Browse previous HIIT and gym sessions with detailed statistics and training data. Workout history remains accurate even if a workout or plan changes later. SHARE AND IMPORT Export workouts and gym plans as files and share them between devices. Import workouts with validation and clear error handling. PERSONALIZE YOUR EXPERIENCE Choose between light, dark and system theme modes. Customize accent colors, sound settings and switch between English and Portuguese (Portugal). FEATURES • Structured HIIT workout builder • Gym plans and strength training sessions • Blocks, sets, timed and repetition-based exercises • Quick workout mode • Work, rest, set-rest and preparation phases • Exercise set tracking and training history • Weight, reps, duration, distance and RPE tracking • Personal records and recent exercise sessions • Pause, resume, skip and end session controls • Phase and set progress tracking • Sound cues and countdown beeps • Session history with detailed statistics • Workout favorites and search • Export and import via files • Completion card sharing • Light and dark themes • Multiple accent colors • English and Portuguese support