Surge: Interval Timer & HIIT
Gym, Boxing & Circuit Workout
$0.99 · Designed for iPad. Not verified for macOS.
Surge is a beautifully designed interval timer for HIIT, Tabata, boxing rounds, EMOM and any circuit-style workout — at home, in the gym or ringside.
Pay once and it's yours forever. No subscriptions, no in-app purchases, no ads — every feature included.
Set your work and rest, pick your rounds and press play — Surge calls every phase with beeps and haptics, so you train bell to bell without watching the clock.
ROUNDS READY TO GO
• Tabata — 20s work / 10s rest × 8 rounds
• HIIT — 40s work / 20s rest × 10 rounds
• Boxing — 3:00 rounds with 1:00 rest × 6
• EMOM — 60-second intervals × 10
• Stretch — 30s holds / 10s rest × 12
• Edit any built-in preset to match your training
YOUR WORKOUT, YOUR RULES
• Work from 5 seconds to 10 minutes, rest up to 5 minutes
• 1–50 rounds, with an optional preparation countdown
• Save up to 20 presets with custom names and icons
• Skip a phase mid-workout; the screen stays awake to the final bell
• A large, glanceable countdown with an animated progress ring
BUILT RIGHT
• Pay once, own it for life — the price you see is everything
• No subscriptions, no in-app purchases, no upsells
• No ads, ever
• Megabytes, not gigabytes — no ad libraries, no analytics SDKs, nothing that isn't the app itself
• No account and no data collection — your presets never leave your device
• Designed for iPhone and iPad
Download Surge and let every round run itself.
Ratings & Reviews
Thanks for using Surge! This update brings small refinements and performance improvements for a smoother experience.
The developer, Matthew Avery, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Matthew Avery
- Size
- 715.8 KB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © averyio
