# Surge vs Intervo

The clearest difference is price: Intervo at Free against Surge's $2.00. On rating, ratings volume, update cadence and ads there is nothing between them.

Intervo is free to download; Surge costs $2.00 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Surge against 5.0 for Intervo. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Surge ships an update fortnightly, Intervo every 8 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Surge | Intervo |
| --- | --- | --- |
| Price | $2.00 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/surge-interval-timer-and-hiit/id6762224044/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/intervo-hiit-tabata-timer/id6785562622/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 23 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Avery](https://appshunter.io/developer/1893424317) | [Yuki Okawa](https://appshunter.io/developer/1867195492) |

## What reviewers say

### Surge

[App page](https://appshunter.io/ios/app/surge-interval-timer-and-hiit/id6762224044)

This interval timer app is designed for various circuit-style workouts like HIIT, Tabata, and boxing. It provides audio and haptic cues for each phase, allowing users to train without constantly watching the clock. All features are included with a single purchase, offering a complete, ad-free experience.

**Highlights:** Customizable work and rest intervals, Pre-set workout routines (Tabata, HIIT, Boxing), Audio and haptic interval cues, Save up to 20 custom presets, Preparation countdown, Screen stays awake during workouts

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Intervo

[App page](https://appshunter.io/ios/app/intervo-hiit-tabata-timer/id6785562622)

This app provides a customizable interval timer for various fitness routines like HIIT, Tabata, and circuit training. It offers a clear, large display with color-coded cues and audio feedback for seamless workout tracking. All features are free and accessible offline, with no subscriptions or in-app purchases required.

**Highlights:** Customizable work/rest intervals, Unlimited preset saving, Voice countdown and sound cues, Large, color-coded display, Offline and private operation, One-tap Tabata preset

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Surge free?

Surge costs $2.00, with no in-app purchases.

### Is Intervo free?

Intervo is free to download, with no in-app purchases.

### Which has better reviews, Surge or Intervo?

Surge and Intervo are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Surge or Intervo have ads?

Neither Surge nor Intervo shows ads.

### Which is updated more often, Surge or Intervo?

Surge ships an update fortnightly, and Intervo every 8 days. Most recently, Surge was updated on November 9, 2026 and Intervo on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*