Seconds

Smart interval timer for HIIT Tabata and custom workouts

Seconds is a polished, feature-rich interval timer designed for anyone who takes structured training seriously, from HIIT enthusiasts to seasoned coaches. Its standout strength is how clearly it presents your workout: the large, full-screen, color-coded display is easy to read at a glance, whether it’s propped across the room or in your hand, and it works smoothly in both portrait and landscape.

Setting up workouts is impressively flexible. You get ready-made templates for HIIT, Tabata and circuit sessions, plus a powerful custom editor that lets you fine-tune every interval. The compound editor is a real highlight, allowing you to link multiple timers into one seamless routine—ideal for complex training days or multi-part classes.

Audio guidance is excellent. Seconds can speak interval names and provide warnings before the next phase, so you don’t need to stare at the screen. You can also choose different alerts, from beeps to bells, and even assign specific music to each interval. Matching high-intensity tracks to all-out sprints and calmer tunes to recovery segments adds a surprisingly motivating layer to your workouts.

The app continues running reliably in the background, letting you lock the screen or switch to another app without losing the timer. For trainers and workout buddies, the export and import options are very handy: you can share your favorite Tabata or circuit sets in a couple of taps.

The main caveat is the free version’s restriction: while you can create as many timers as you like, each one can only be reused after upgrading. That makes the free tier more of a trial than a long-term solution. Still, if you want a professional-grade interval timer with deep customization and clear, hands-free guidance, Seconds is an excellent choice.