# Workout Timer Interval & HIIT vs CalorIA

The clearest difference is in-app purchases: CalorIA at none against Workout Timer Interval & HIIT's 3. CalorIA also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Workout Timer Interval & HIIT sells 3 in-app purchases, starting at $2.99 per month. CalorIA asks for nothing beyond the download.

Workout Timer Interval & HIIT ships an update fortnightly, CalorIA every 2 days. Both last shipped on September 21, 2026.

## The numbers

| Metric | Workout Timer Interval & HIIT | CalorIA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (145 ratings)](https://appshunter.io/ios/app/workout-timer-interval-and-hiit/id1669997130/reviews)** | — |
| Number of ratings | **145** | — |
| Positive reviews | 53.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 12 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Simon Jansen](https://appshunter.io/developer/1669997132) | [Imad Sharof](https://appshunter.io/developer/1883044384) |

## What reviewers say

### Workout Timer Interval & HIIT

[App page](https://appshunter.io/ios/app/workout-timer-interval-and-hiit/id1669997130)

This app offers customizable interval timers for various training styles like HIIT, Tabata, and Crossfit. Track your progress, enjoy background music, and switch between light and dark modes to enhance your fitness routine.

**Highlights:** Customizable interval timers, Supports HIIT, Tabata, WOD, Crossfit, EMOM, AMRAP, Historical workout tracking, Background music playback, Light and dark mode themes, Intuitive interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| Premium Yearly | $14.99 | per year |
| Premium | $29.99 | one-time |


### CalorIA

[App page](https://appshunter.io/ios/app/caloria/id6761013724)

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

**In-app purchases:** none


## Frequently asked questions

### Is Workout Timer Interval & HIIT free?

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

### Is CalorIA free?

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

### Do Workout Timer Interval & HIIT or CalorIA have ads?

Neither Workout Timer Interval & HIIT nor CalorIA shows ads.

### Which is updated more often, Workout Timer Interval & HIIT or CalorIA?

Workout Timer Interval & HIIT ships an update fortnightly, and CalorIA every 2 days. Most recently, Workout Timer Interval & HIIT was updated on September 21, 2026 and CalorIA on September 21, 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.*