# Interval Timer | HIIT Training vs HelloSun

The clearest difference is price: Interval Timer | HIIT Training at Free against HelloSun's $2.99. Interval Timer | HIIT Training also leads on iOS requirement (16.0 vs 26.0). HelloSun's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

Interval Timer | HIIT Training is free to download; HelloSun costs $2.99 up front. Interval Timer | HIIT Training sells 3 in-app purchases, starting at $1.99 per month. HelloSun asks for nothing beyond the download.

## The numbers

| Metric | Interval Timer | HIIT Training | HelloSun |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-training/id6791772563/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | — |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 103 MB | 31 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [LS PROGRAMACAO LTDA](https://appshunter.io/developer/1896779603) | [Kevin Reutter](https://appshunter.io/developer/1273424431) |

## What reviewers say

### Interval Timer | HIIT Training

[App page](https://appshunter.io/ios/app/interval-timer-hiit-training/id6791772563)

This app provides a customizable interval timer for various workout types, including HIIT, Tabata, and boxing. It features large, easy-to-read displays and can track and share workout data. It also offers a Wear OS companion app for wrist-based training.

**Highlights:** Customizable work and rest intervals, Large, full-screen display, Workout tracking and sharing, Wear OS companion app, Distance-based intervals, Background operation with screen off

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro Monthly | $1.99 | per month |
| Interval Timer Pro Annual | $11.99 | per year |
| Interval Timer Pro Lifetime | $29.99 | one-time |


### HelloSun

[App page](https://appshunter.io/ios/app/hellosun-daylight-tracker/id6793110238)

Track your daily outdoor time and visualize your progress towards a goal. The app turns your time spent outside into a visual representation, showing how much daylight you've had and how much is left to reach your daily target. It also provides UV index estimates to help you enjoy sunshine safely.

**Highlights:** Visualize daily daylight progress, Standalone Apple Watch app, UV index and skin type estimation, Home Screen and Lock Screen widgets, Watch face complications, Streak and history tracking, Privacy-focused, no account needed

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer | HIIT Training free?

Interval Timer | HIIT Training is free to download, with in-app purchases available.

### Is HelloSun free?

HelloSun costs $2.99, with no in-app purchases.

### Do Interval Timer | HIIT Training or HelloSun have ads?

Interval Timer | HIIT Training shows ads; HelloSun does not.

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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.*