This interval timer is designed for combat sports training, offering customizable rounds, rest periods, and alerts. It features hands-free gesture control and a large, easy-to-read display for gym use. The app works offline and prioritizes user privacy with no trackers or analytics.
1.7
October 29, 2026
RoundBlitz is ready for iPhone Duo: it fills both displays and adapts when you fold or unfold mid-workout. Unfolded, the countdown is much bigger, so you can read it from across the gym (on iPad, too). Stand it half-open in tabletop mode (iOS 27.1): countdown on the upright half, controls on the flat half. Folded, the timer fits the outer screen. - The Live Activity on the Lock Screen and in the Dynamic Island now uses the app's language, is easier to read and fits the narrower Dynamic Island on iPhone Duo. - The play/pause, reset and skip buttons now fit fully on smaller iPhones like iPhone SE. - Presets and Settings are now available in landscape, too, and onboarding scrolls on small and split screens, so its buttons are always within reach. - Smaller fixes: a cleaner Save Preset sheet, preset names that stay on one line, and a correct "Rounds Left" count before the first round. - More reliable gesture control: the camera handles rotating your phone better and recovers when it's interrupted. If gesture control can't use the camera, a clear message tells you why, with an Open Settings button when camera access is off.
More$4.99
Pro
Removed from the App Store on October 31, 2026. Pro
RoundBlitz is a boxing interval timer designed for serious fighters. It offers customizable rounds, rest periods, and alerts with a large, easy-to-read display and hands-free gesture control for seamless training.
RoundBlitz is a paid app priced at $5.99. This one-time purchase includes all features, with no subscriptions, in-app purchases, or ads.
No, RoundBlitz is completely ad-free. The developers emphasize a distraction-free training experience, with no advertisements included in the app.
RoundBlitz is compatible with iPhone, iPad, and Apple Watch. The Apple Watch companion app allows for control and alerts directly from your wrist.
Yes, RoundBlitz works entirely offline. All features and data are stored on your device, ensuring uninterrupted use even without an internet connection.
You can start, stop, restart, or skip a round using hand signs recognized by your device's front camera. This feature works with gloves on and allows you to assign specific signs for control.
After your session, RoundBlitz offers a round-by-round summary including total work time, rest time, and estimated calories burned. You can also repeat the session with a single tap.
RoundBlitz has an age rating of 4+. Its primary focus is on serious combat sports training, but its simple interface and customizable features can be adapted for various fitness levels.
