# OpenHIIT vs CrispyCore

The clearest difference is device support: OpenHIIT at 3 against CrispyCore's 1. OpenHIIT also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

OpenHIIT ships an update monthly, CrispyCore every 2 weeks. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | OpenHIIT | CrispyCore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/openhiit/id6459617819/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 26 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Abigail Mabe](https://appshunter.io/developer/1701885217) | [Quentin Decosne](https://appshunter.io/developer/1838134512) |

## 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


### CrispyCore

[App page](https://appshunter.io/ios/app/crispycore/id6752120112)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenHIIT free?

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

### Is CrispyCore free?

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

### Do OpenHIIT or CrispyCore have ads?

Neither OpenHIIT nor CrispyCore shows ads.

### Which is updated more often, OpenHIIT or CrispyCore?

OpenHIIT ships an update monthly, and CrispyCore every 2 weeks. Most recently, OpenHIIT was updated on October 24, 2026 and CrispyCore on October 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.*