# Pulse vs Surge HIIT

The clearest difference is iOS requirement: Pulse at 15.1 against Surge HIIT's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Pulse sells 1 one-off in-app purchase and Surge HIIT sells 3 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on September 8, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Pulse | Surge HIIT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Size | 47 MB | 2 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tomas Bezouska](https://appshunter.io/developer/1881524325) | [Ralf Koch](https://appshunter.io/developer/596125475) |

## What reviewers say

### Pulse

[App page](https://appshunter.io/ios/app/pulse-interval-timer/id6759901758)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pulse PRO | $3.99 | one-time |


### Surge HIIT

[App page](https://appshunter.io/ios/app/surge-hiit-interval-timer/id6771864961)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Surge Hiit Premium - Yearly | $29.99 | per year |
| Surge Hiit Premium - 14-day Trial | Free | one-time |
| Surge Hiit Premium - Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Pulse free?

Pulse is free to download, with in-app purchases available.

### Is Surge HIIT free?

Surge HIIT is free to download, with in-app purchases available.

### Do Pulse or Surge HIIT have ads?

Neither Pulse nor Surge HIIT shows ads.

### Which is updated more often, Pulse or Surge HIIT?

Pulse ships an update every 3 days, and Surge HIIT every 3 days. Most recently, Pulse was updated on September 8, 2026 and Surge HIIT on August 17, 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.*