# YKBI vs OpenHIIT

The clearest difference is update cadence: OpenHIIT at monthly against YKBI's every 21 months. OpenHIIT also leads on iOS requirement (13.0 vs 15.0). 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.

YKBI ships an update every 21 months, OpenHIIT monthly. The most recent releases landed on September 18, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | YKBI | OpenHIIT |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Monthly** |
| Monetization | — | Free |
| Size | 236 MB | 26 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FitPhilia](https://appshunter.io/developer/1178311498) | [Abigail Mabe](https://appshunter.io/developer/1701885217) |

## What reviewers say

### YKBI

[App page](https://appshunter.io/ios/app/ykbi/id6445909273)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is YKBI free?

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

### Is OpenHIIT free?

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

### Do YKBI or OpenHIIT have ads?

Neither YKBI nor OpenHIIT shows ads.

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

YKBI ships an update every 21 months, and OpenHIIT monthly. Most recently, YKBI was updated on September 18, 2026 and OpenHIIT on August 14, 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.*