# C vs HIIT Time

The clearest difference is update cadence: HIIT Time at weekly against C's every 5 months. 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.

C ships an update every 5 months, HIIT Time weekly. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | C | HIIT Time |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Size | 32 MB | 1 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Legends Boxing](https://appshunter.io/developer/1398377664) | [GRAIG FISHER](https://appshunter.io/developer/6800920997) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-l1-interval-timer/id6754101559)

**In-app purchases:** none


### HIIT Time

[App page](https://appshunter.io/ios/app/hiit-time-interval-timer/id6800920995)

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

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is HIIT Time free?

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

### Do C or HIIT Time have ads?

Neither C nor HIIT Time shows ads.

### Which is updated more often, C or HIIT Time?

C ships an update every 5 months, and HIIT Time weekly. Most recently, C was updated on October 6, 2026 and HIIT Time 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.*