NitroFIT28 vs Kettlebell Interval Timer

NitroFIT28 is an easy-to-use gym and fitness management system.

KB Timer is a free, fully offline interval timer that lets you build and run custom workouts tailored to your training style. No ads, no subscriptions, no account required. Create workouts with multiple exercises, each with its own work duration, rest period, and set count. Set a single timer template for the whole workout or override timing on a per-exercise basis. Whether you're swinging kettlebells, running circuits, doing HIIT, or following a stretching routine — KB Timer adapts to your flow. KEY FEATURES - Build custom workouts with unlimited exercises - Set work, rest, and set counts per exercise or per workout - Rep-based exercise support for count-based movements - Visual countdown timer with ring or bar progress display - Play, pause, skip, and reset during sessions - Prep countdown to get set before each exercise - Session history to track completed workouts - Duplicate, favorite, and organize your workout library - Fully offline — no account, no internet required DESIGNED FOR - Kettlebell training (swings, snatches, cleans, complexes) - HIIT and circuit workouts - Stretching and mobility routines - Any interval-based training All your data stays on your device. No accounts, no cloud sync, no tracking, no ads. Just a fast, focused timer that works the way you train — completely free.