# 30 Day Splits Challenge vs Interval Workout & HIIT Timer

The clearest difference is rating: Interval Workout & HIIT Timer at 5.0 against 30 Day Splits Challenge's 3.9. Interval Workout & HIIT Timer also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 9 months). 30 Day Splits Challenge's advantage is ratings volume (82 vs 1) and device support (3 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. 30 Day Splits Challenge sells 10 one-off in-app purchases and Interval Workout & HIIT Timer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Interval Workout & HIIT Timer holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: 30 Day Splits Challenge has 82 ratings behind it against 1, so its average is the more settled of the two.

30 Day Splits Challenge ships an update every 9 months, Interval Workout & HIIT Timer every 3 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 30 Day Splits Challenge | Interval Workout & HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (82 ratings)](https://appshunter.io/ios/app/30-day-splits-challenge/id1447798498/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interval-workout-and-hiit-timer/id6757612687/reviews)** |
| Number of ratings | **82** | 1 |
| Positive reviews | 51.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 44 MB | 17 MB |
| Requires iOS | **15.6** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Roobol](https://appshunter.io/developer/1002996460) | [Massive Interface LLC](https://appshunter.io/developer/1456804634) |

## What reviewers say

### 30 Day Splits Challenge

[App page](https://appshunter.io/ios/app/30-day-splits-challenge/id1447798498)

This 30-day program uses a mix of active and passive stretching to improve flexibility, increase range of motion, and reduce injury risk. It's designed to help users achieve greater flexibility, even if they've struggled with other methods.

**Highlights:** 30-day flexibility program, Active stretching techniques, Passive stretching techniques, Increase range of motion, Reduce injury risk, Improve posture

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Create Workouts | $0.99 | one-time |
| For Beginners | $1.99 | one-time |
| Full Body Stretching | $1.99 | one-time |
| Upper Body Stretching | $1.99 | one-time |
| 60 Day Splits Challenge | $1.99 | one-time |
| Learn the Middle Splits | $1.99 | one-time |
| 30 Day Splits Challenge | $1.99 | one-time |
| Create Challenges | $2.99 | one-time |
| Full Bundle | $5.99 | one-time |


### Interval Workout & HIIT Timer

[App page](https://appshunter.io/ios/app/interval-workout-and-hiit-timer/id6757612687)

This minimalist interval timer helps you focus on your workout by managing your timing. It offers multiple modes for HIIT, Tabata, and standard intervals, with customizable transition times and focus-friendly audio or haptic feedback. Seamlessly track progress on your lock screen.

**Highlights:** Multiple timer modes (HIIT, Tabata, standard), Customizable interval and rest periods, Smart 'Interval Gap' transition timer, Focus-friendly audio cues and haptic feedback, Live Activities and Dynamic Island integration, Background notifications

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Home and Lock Screen Support | $0.99 | one-time |
| Live Activities and Dynamic Island | $1.99 | one-time |


## Frequently asked questions

### Is 30 Day Splits Challenge free?

30 Day Splits Challenge is free to download, with in-app purchases available.

### Is Interval Workout & HIIT Timer free?

Interval Workout & HIIT Timer is free to download, with in-app purchases available.

### Which has better reviews, 30 Day Splits Challenge or Interval Workout & HIIT Timer?

Interval Workout & HIIT Timer is rated higher. 30 Day Splits Challenge averages 3.9 out of 5 from 82 ratings, while Interval Workout & HIIT Timer averages 5.0 from 1 ratings.

### Do 30 Day Splits Challenge or Interval Workout & HIIT Timer have ads?

30 Day Splits Challenge shows ads; Interval Workout & HIIT Timer does not.

### Which is updated more often, 30 Day Splits Challenge or Interval Workout & HIIT Timer?

30 Day Splits Challenge ships an update every 9 months, and Interval Workout & HIIT Timer every 3 weeks. Most recently, 30 Day Splits Challenge was updated on November 6, 2026 and Interval Workout & HIIT Timer on October 31, 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.*