Kairos vs RoxSIM

Kairos is the interval timer that keeps your gym and home workout sessions on track. Plan your workout once, press start, and always know what's next. No guessing, no wasted time. Just start and train. BUILD • Custom work, rest, warm-up and cool-down intervals • Rounds and exercises with weights, reps and notes • Save workouts, give each one a colour, and reuse them anytime TRAIN • Full-screen timer with countdown sounds and vibration • Stays on time with your phone locked or the app in the background • Follow your workout from the Lock Screen and Dynamic Island TRACK • Weekly and monthly stats, with a calendar of every session • Finished workouts saved to Apple Health, if you allow it • No account needed to get started Got an idea or found a bug? Chat with us straight from the app. We read every message. Kairos is free to use. Kairos Premium unlocks unlimited custom workout sessions. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://theworkouttimer.app/privacy-policy

RoxSIM is the first race simulator built for HYROX and DEKA athletes. Simulate full events with accurate run/station splits, real-time pacing guidance, transition enforcement, audio coaching, fatigue tracking, and performance analytics—so you train like race day, not guesswork. Prepare for HYROX and DEKA formats (Strong, Mile, Fit) with realistic simulations of run segments, sled push/pull, burpee broad jumps, row, SkiErg, AirBike, farmer’s carry, wall balls, lunges, med-ball work, and transitions. Get prompts like “Slow run pace 8%” or “You’re 10s ahead of last DEKA sim” to keep you on strategy. Core features HYROX & DEKA race simulations (Strong, Mile, Fit) - Real-time pacing guidance & audio coaching - Precise run/station split tracking & race time prediction - Fatigue/efficiency modeling and transition timing - Custom simulation builder & training history - Strategy planning: identify weak segments, balance strength vs endurance Why it matters - Train with exact race structure: loads, sequencing, pacing, fatigue patterns - Enforce transitions (no cheating) and manage energy like on-course - Improve where you actually lose time, not with random workouts Built for - HYROX athletes, DEKA Strong/Mile/Fit competitors, hybrid fitness racers, coaches, and anyone who needs a true race simulator instead of a basic timer. Any setup, anywhere - Gym, studio, garage, or limited equipment - RoxSIM adapts. Simulate sleds, carries, wall balls, and runs with alternatives so you can prep anytime. Stop guessing readiness. Start training like you’ve already seen the course. Download RoxSIM and get race-day ready every day.