# interval timer hiit or running vs Correlation Finder

The clearest difference is price: Correlation Finder at Free against interval timer hiit or running's $0.99. Correlation Finder also leads on iOS requirement (13.0 vs 15.6). interval timer hiit or running's advantage is review sentiment (33% vs 0%) and update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

Correlation Finder is free to download; interval timer hiit or running costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

interval timer hiit or running ships an update every 3 weeks, Correlation Finder every 2 months. The most recent releases landed on October 4, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | interval timer hiit or running | Correlation Finder |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[2.0 (2 ratings)](https://appshunter.io/ios/app/correlation-finder/id6497331166/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 68 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sylvain Huon](https://appshunter.io/developer/1552904209) | [Livanda - Internetkliniken AB](https://appshunter.io/developer/1607972909) |

## What reviewers say

### interval timer hiit or running

[App page](https://appshunter.io/ios/app/interval-timer-hiit-or-running/id6447249321)

This interval timer app helps you set up HIIT, workout, or running sessions quickly. Customize workout and rest times, with visual cues and optional sound/vibration alerts. It works in the background, allowing you to use other apps simultaneously.

**Highlights:** Customizable interval timers, Visual phase indicators, Sound and vibration alerts, Background operation, Minimalist user interface, Supports Apple Watch

**Features:** Apple Watch app

**In-app purchases:** none


### Correlation Finder

[App page](https://appshunter.io/ios/app/correlation-finder/id6497331166)

Discover how your daily habits impact your health. Track sleep, diet, exercise, and mood to uncover hidden correlations. Visualize data with clear graphs and diagrams for deeper well-being insights.

**Highlights:** Track sleep, exercise, diet, and mood, Create custom tracking parameters, Analyze correlations between habits and health, Visualize data with graphs and diagrams, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is interval timer hiit or running free?

interval timer hiit or running costs $0.99, with no in-app purchases.

### Is Correlation Finder free?

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

### Do interval timer hiit or running or Correlation Finder have ads?

Neither interval timer hiit or running nor Correlation Finder shows ads.

### Which is updated more often, interval timer hiit or running or Correlation Finder?

interval timer hiit or running ships an update every 3 weeks, and Correlation Finder every 2 months. Most recently, interval timer hiit or running was updated on October 4, 2026 and Correlation Finder on September 28, 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.*