# HIIT Interval Timer & Tabata vs CF

The clearest difference is in-app purchases: CF at none against HIIT Interval Timer & Tabata's 4. CF also leads on iOS requirement (14.0 vs 16.4). HIIT Interval Timer & Tabata's advantage is update cadence (every 2 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. HIIT Interval Timer & Tabata sells 4 in-app purchases, starting at $0.99 per 7 days. CF asks for nothing beyond the download.

HIIT Interval Timer & Tabata ships an update every 2 weeks, CF every 6 months. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | HIIT Interval Timer & Tabata | CF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Size | 29 MB | 56 MB |
| Requires iOS | 16.4 | **14.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Ilin](https://appshunter.io/developer/1081786723) | [TeamUp Sports](https://appshunter.io/developer/1449504626) |

## What reviewers say

### HIIT Interval Timer & Tabata

[App page](https://appshunter.io/ios/app/hiit-interval-timer-and-tabata/id6751461190)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly premium access | $0.99 | per 7 days |
| Monthly premium Access | $2.99 | per month |
| Annual premium subscription | $9.99 | per year |
| Annual premium subscription | $14.99 | per year |


### CF

[App page](https://appshunter.io/ios/app/cf/id6754631125)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HIIT Interval Timer & Tabata free?

HIIT Interval Timer & Tabata is free to download, with in-app purchases available.

### Is CF free?

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

### Do HIIT Interval Timer & Tabata or CF have ads?

Neither HIIT Interval Timer & Tabata nor CF shows ads.

### Which is updated more often, HIIT Interval Timer & Tabata or CF?

HIIT Interval Timer & Tabata ships an update every 2 weeks, and CF every 6 months. Most recently, HIIT Interval Timer & Tabata was updated on October 5, 2026 and CF on September 30, 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.*