CrossFit FNA vs Pure Intervals

For members of CrossFit FNA to reserve their place in a class, sign up for gym events, and general account management like updating headshots and credit card on file.

Pure Intervals is an interval timer built for HIIT, Tabata, strength training, cardio, and circuit training — or whatever you use a timer for. FEATURES • Simple, distraction-free interface built around the timer • Keeps running when your screen locks or you switch apps • Voice notifications — audible cues announce each interval transition • Alert sounds — tone notifications for interval changes • Save unlimited workout routines — no caps, no restrictions • Create workout Templates or Collections of routines • Peer-to-peer Workout and Collection sharing • Workout History • Fully offline — no internet connection required • No data collection and no ads, ever • Multilingual — if you are so inclined BUY ONCE. USE FOREVER. Pure Intervals is a one-time purchase. No subscription. No premium tier. No paywall. No features locked behind a recurring fee. Every capability — unlimited saved workouts/collections/templates, background timer, voice notifications, offline use — is included from day one and stays that way. If we add features later, you'll get those too. BUILT FOR EVERY TRAINING STYLE HIIT — Push-rest-push-rest with precise interval control. Program exact work and rest durations down to the second. Whether your HIIT workout is 20 minutes or 45, your interval timer tracks every second. Tabata — Classic 20-second work, 10-second rest cycles with round tracking, or customize any variation. Pure Intervals handles standard Tabata and any modified protocol you prefer. Strength training — Rest timers between sets, work timers for timed lifts, or full circuit sequences. Save your strength training routine once and load it every session. Cardio — Steady-state interval training, tempo intervals, or fartlek-style free segments. Any interval structure, any duration. Circuit training — Chain multiple exercises with separate work, rest, and transition intervals in a single saved routine. Your circuit training timer, built exactly the way you need it. OFFLINE. ALWAYS READY. No internet connection needed. Pure Intervals works anywhere you train: the gym floor, a hotel room, a park, outdoors, a basement. No account to create, no sign-in required, no sync dependency. Build your interval routines once, save them, and load them every session. Unlimited saved workouts. No limits.