# HIIT Dual Timer vs InterFit Timer

The clearest difference is update cadence: HIIT Dual Timer at every 5 days against InterFit Timer's every 17 months. HIIT Dual Timer also leads on iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HIIT Dual Timer ships an update every 5 days, InterFit Timer every 17 months. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HIIT Dual Timer | InterFit Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/hiit-dual-timer/id1505262060/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 17 months |
| Monetization | Free | — |
| Size | 1 MB | 25 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [BWorby Works](https://appshunter.io/developer/546372907) | [爱华 刘](https://appshunter.io/developer/1797362038) |

## What reviewers say

### HIIT Dual Timer

[App page](https://appshunter.io/ios/app/hiit-dual-timer/id1505262060)

This interval timer allows you to set custom durations for work and rest periods, and then repeat them for a specified number of rounds. It's designed for high-intensity interval training and other timed activities.

**Highlights:** Customizable work intervals, Customizable rest intervals, Set number of rounds, Simple start and go functionality, Ideal for HIIT workouts

**Features:** macOS Compatibility

**In-app purchases:** none


### InterFit Timer

[App page](https://appshunter.io/ios/app/interfit-timer-workout-timer/id6742210663)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is HIIT Dual Timer free?

HIIT Dual Timer is free to download, with no in-app purchases.

### Is InterFit Timer free?

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

### Do HIIT Dual Timer or InterFit Timer have ads?

Neither HIIT Dual Timer nor InterFit Timer shows ads.

### Which is updated more often, HIIT Dual Timer or InterFit Timer?

HIIT Dual Timer ships an update every 5 days, and InterFit Timer every 17 months. Most recently, HIIT Dual Timer was updated on September 29, 2026 and InterFit Timer on October 7, 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.*