# Runners Calculator vs Interval Timer

The clearest difference is in-app purchases: Runners Calculator at none against Interval Timer's 5. Runners Calculator also leads on iOS requirement (12.0 vs 17.6). Interval Timer's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Interval Timer sells 5 in-app purchases, starting at $1.99 per month. Runners Calculator asks for nothing beyond the download.

Runners Calculator ships an update every 2 weeks, Interval Timer every 9 days. The most recent releases landed on September 22, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Runners Calculator | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-tabata/id6755321377/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 59 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Yudai Fukuda](https://appshunter.io/developer/1434814836) | [AVA Consult](https://appshunter.io/developer/1732636284) |

## What reviewers say

### Runners Calculator

[App page](https://appshunter.io/ios/app/runners-calculator/id6737177676)

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

**In-app purchases:** none


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-tabata/id6755321377)

This app provides a highly customizable interval timer for various workout types, including HIIT, Tabata, and circuit training. It offers clear audio cues, background operation, and workout history tracking to help users structure their exercise sessions effectively.

**Highlights:** Customizable interval timers, Full-screen color-coded display, Audio cues and alerts, Background operation, Workout history and statistics, Pre-set templates for routines

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access - Monthly | $1.99 | per month |
| Pro Access - Monthly | $1.99 | per month |
| Pro Access - Yearly | $9.99 | per year |
| Pro Access - Yearly | $9.99 | per year |
| Pro Access - Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Runners Calculator free?

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

### Is Interval Timer free?

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

### Do Runners Calculator or Interval Timer have ads?

Runners Calculator shows ads; Interval Timer does not.

### Which is updated more often, Runners Calculator or Interval Timer?

Runners Calculator ships an update every 2 weeks, and Interval Timer every 9 days. Most recently, Runners Calculator was updated on September 22, 2026 and Interval Timer on September 8, 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.*