# Surge: Interval & Boxing Timer — Tabata, HIIT & Round Workouts

> Tabata, HIIT & Round Workouts (iPhone/iPad app by Nixes.)

- Source: https://appshunter.io/ios/app/surge-interval-and-boxing-timer/id6778938968 (this page in markdown: same URL + `.md`)
- Developer: [Nixes](https://appshunter.io/developer/1077044374)
- Category: Sports, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-06-12
- Data updated: 2026-08-13
- User reviews in markdown: https://appshunter.io/ios/app/surge-interval-and-boxing-timer/id6778938968/reviews.md

## What is Surge?

The interval timer that shows you what your heart did every round.

Big, color-coded, readable from across the gym. Voice cues over your music
with the screen locked. And after every workout: heart rate, calories, and
recovery — round by round, straight from your watch.

BUILT FOR EVERY FORMAT
• Boxing rounds, Tabata, HIIT, EMOM, AMRAP — one tap to load
• Block editor: work, rest, warm up, cool down — any structure you want
• Repeat groups: build circuits and repeat them ×2 to ×99
• Quick Start: work/rest × rounds in two taps

MADE FOR THE GYM FLOOR
• Massive countdown digits you can read from meters away
• Green means work, blue means rest — full-screen color coding
• Voice coach announces what's next; beeps count you down
• Plays over your music and keeps running with the screen locked

YOUR HEART, EVERY ROUND — WITH ANY WATCH
• Workouts saved to Apple Health automatically
• Heart rate & calories from your watch, right
• Recovery: how fast your heart rate drops between rounds — the number
  coaches actually care about
• Round-over-round drift shows you when your engine fades
• Pro: the full per-round breakdown and chart

WORKS WITH ANY SMARTWATCH
• Wrist alerts at every interval — Apple Watch, Garmin, Samsung, Pixel & more
• Your watch tracks the workout; Surge cues th

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Surge Pro | $4.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-06-12

No release notes.

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All apps by Nixes: https://appshunter.io/developer/1077044374

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-13.*