# HC HIIT Interval Timer vs Kaizen Timer

The clearest difference is in-app purchases: HC HIIT Interval Timer at none against Kaizen Timer's 1. Kaizen Timer's advantage is update cadence (every 3 days vs every 21 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Kaizen Timer sells 1 in-app purchase, starting at $0.99 per month. HC HIIT Interval Timer asks for nothing beyond the download.

HC HIIT Interval Timer ships an update every 21 months, Kaizen Timer every 3 days. The most recent releases landed on October 24, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | HC HIIT Interval Timer | Kaizen Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/hc-hiit-interval-timer/id1501179862/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 2 MB | 3 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Dejan Dragic](https://appshunter.io/developer/1501179861) | [Stefan Dasic](https://appshunter.io/developer/1861310477) |

## What reviewers say

### HC HIIT Interval Timer

[App page](https://appshunter.io/ios/app/hc-hiit-interval-timer/id1501179862)

Create and manage custom interval training workouts with an integrated timer. Design workouts with specific actions, colors, names, and durations. Suitable for personal training or individual fitness routines.

**Highlights:** Create custom workouts, Integrated workout timer, Define actions with color, name, and duration, Use default workouts, Save and reuse workout routines

**Features:** macOS Compatibility

**In-app purchases:** none


### Kaizen Timer

[App page](https://appshunter.io/ios/app/kaizen-timer/id6758769895)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Kaizen Timer | $0.99 | per month |


## Frequently asked questions

### Is HC HIIT Interval Timer free?

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

### Is Kaizen Timer free?

Kaizen Timer is free to download, with in-app purchases available.

### Do HC HIIT Interval Timer or Kaizen Timer have ads?

Neither HC HIIT Interval Timer nor Kaizen Timer shows ads.

### Which is updated more often, HC HIIT Interval Timer or Kaizen Timer?

HC HIIT Interval Timer ships an update every 21 months, and Kaizen Timer every 3 days. Most recently, HC HIIT Interval Timer was updated on October 24, 2026 and Kaizen Timer on November 2, 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.*