# OpenHIIT vs Custom Interval Workout Timer

The clearest difference is in-app purchases: OpenHIIT at none against Custom Interval Workout Timer's 2. OpenHIIT also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Custom Interval Workout Timer sells 2 in-app purchases, starting at $1.99 per month. OpenHIIT asks for nothing beyond the download.

OpenHIIT ships an update monthly, Custom Interval Workout Timer every 3 weeks. The most recent releases landed on August 14, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OpenHIIT | Custom Interval Workout Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/openhiit/id6459617819/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 26 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Abigail Mabe](https://appshunter.io/developer/1701885217) | [Michael McGill apps llc](https://appshunter.io/developer/1874084552) |

## What reviewers say

### OpenHIIT

[App page](https://appshunter.io/ios/app/openhiit/id6459617819)

This open-source interval timer app helps optimize various activities like workouts, work sprints, and study sessions. It offers customizable timing, precise controls, and clear auditory and visual alerts to keep you motivated and on track. Users can also join a collaborative community to contribute to its development.

**Highlights:** Customizable interval timing, Precise and user-friendly controls, Auditory and visual alerts, Open-source community collaboration, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Custom Interval Workout Timer

[App page](https://appshunter.io/ios/app/custom-interval-workout-timer/id6759209042)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $19.99 | per year |


## Frequently asked questions

### Is OpenHIIT free?

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

### Is Custom Interval Workout Timer free?

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

### Do OpenHIIT or Custom Interval Workout Timer have ads?

Custom Interval Workout Timer shows ads; OpenHIIT does not.

### Which is updated more often, OpenHIIT or Custom Interval Workout Timer?

OpenHIIT ships an update monthly, and Custom Interval Workout Timer every 3 weeks. Most recently, OpenHIIT was updated on August 14, 2026 and Custom Interval Workout Timer on September 10, 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.*