# HIIT Dual Timer vs Custom Interval Timers

The clearest difference is review sentiment: Custom Interval Timers at 100% against HIIT Dual Timer's 0%. Custom Interval Timers also leads on rating (5.0 vs 3.0) and ratings volume (14 vs 1). HIIT Dual Timer's advantage is ads (none vs shown) and update cadence (every 5 days vs every 4 months). On price, 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.

Custom Interval Timers holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Custom Interval Timers has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of HIIT Dual Timer's written reviews are positive against 100% of Custom Interval Timers's.

HIIT Dual Timer ships an update every 5 days, Custom Interval Timers every 4 months. The most recent releases landed on June 3, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | HIIT Dual Timer | Custom Interval Timers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/hiit-dual-timer/id1505262060/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/custom-interval-timers/id1552160706/reviews)** |
| Number of ratings | 1 | **14** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 4 months |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 40 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BWorby Works](https://appshunter.io/developer/546372907) | [Alex Rich](https://appshunter.io/developer/1030627712) |

## 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


### Custom Interval Timers

[App page](https://appshunter.io/ios/app/custom-interval-timers/id1552160706)

Design personalized interval timers for workouts or productivity. Its intuitive editor allows for custom flows with various settings like countdowns and personalized interfaces. Offers light/dark modes and an option to disable ads.

**Highlights:** Customizable interval flows, Intuitive timer editor, Count up or down timers, Personalized running interface, Light/dark mode, Ad-free option

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

**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 Custom Interval Timers free?

Custom Interval Timers is free to download, with no in-app purchases.

### Which has better reviews, HIIT Dual Timer or Custom Interval Timers?

Custom Interval Timers is rated higher. HIIT Dual Timer averages 3.0 out of 5 from 1 ratings, while Custom Interval Timers averages 5.0 from 14 ratings.

### Do HIIT Dual Timer or Custom Interval Timers have ads?

Custom Interval Timers shows ads; HIIT Dual Timer does not.

### Which is updated more often, HIIT Dual Timer or Custom Interval Timers?

HIIT Dual Timer ships an update every 5 days, and Custom Interval Timers every 4 months. Most recently, HIIT Dual Timer was updated on June 3, 2026 and Custom Interval Timers on August 24, 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.*