Surge: Interval Timer & HIIT
Gym, Boxing & Circuit Workout
About
This interval timer app supports various workout styles like HIIT, Tabata, and boxing rounds. It offers customizable work/rest periods, round counts, and presets, with clear audio and haptic cues to guide your training without needing to watch the clock.
What's New in Surge
1.2.1
August 15, 2026
Thanks for using Surge! This update brings small refinements and performance improvements for a smoother experience.
Subscriptions & In-App Purchases
$0.99
Surge Pro
Up to 20 presets, premium icons, skip phase & more
Developer apps
FAQ
What is Surge?
Surge is a beautifully designed interval timer application specifically built for HIIT, Tabata, boxing rounds, EMOM, and any circuit-style workout. It helps you train without constantly checking the clock by providing audio and haptic cues for each phase.
How much does Surge cost?
Surge is a paid application priced at $1.99. This is a one-time purchase, meaning you pay once and own the app forever with all features included.
Does Surge have ads or in-app purchases?
No, Surge is completely free of ads, subscriptions, and in-app purchases. The developers have stated that every feature is included in the initial purchase, and it contains no ad libraries or analytics SDKs.
What workout types does Surge support?
Surge supports a variety of workout styles including Tabata (20s work/10s rest), HIIT (40s work/20s rest), Boxing (3:00 rounds/1:00 rest), EMOM (60-second intervals), and stretching. You can also edit these presets or create your own.
Can I customize my workouts in Surge?
Yes, you can customize your workouts extensively. Work periods can range from 5 seconds to 10 minutes, rest periods up to 5 minutes, and you can set between 1 to 50 rounds. You can also save up to 20 presets with custom names and icons.
What devices is Surge available on?
Surge is designed for both iPhone and iPad, offering a seamless experience across Apple devices. It is optimized to run efficiently on these platforms.
How often is Surge updated?
The latest version of Surge is 1.2.1, which was last updated on August 15, 2026. While specific update frequency isn't detailed, this indicates regular maintenance and improvements.
Does Surge collect user data?
No, Surge does not collect any user data. It requires no account and your workout presets never leave your device, ensuring your privacy. This is also a reason for its small file size.
