# Interval Timer · Tabata & HIIT vs Delta

The clearest difference is update cadence: Delta at every 3 days against Interval Timer · Tabata & HIIT's monthly. Delta also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Interval Timer · Tabata & HIIT sells 3 in-app purchases, starting at $2.99 per month and Delta sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer · Tabata & HIIT ships an update monthly, Delta every 3 days. The most recent releases landed on October 18, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Interval Timer · Tabata & HIIT | Delta |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 6 MB | 62 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [jean-baptiste delcros](https://appshunter.io/developer/1727119809) | [MITHUN NATH EDAKKATTU MAYOORANADHAN](https://appshunter.io/developer/1866326672) |

## What reviewers say

### Interval Timer · Tabata & HIIT

[App page](https://appshunter.io/ios/app/interval-timer-tabata-and-hiit/id6757807644)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $2.99 | per month |
| Lifetime Access | $9.99 | one-time |
| Lifetime Access | $19.99 | one-time |


### Delta

[App page](https://appshunter.io/ios/app/delta-progressive-overload/id6760977282)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delta Premium - Monthly | $4.99 | per month |
| Delta Premium - Annually | $49.99 | per year |


## Frequently asked questions

### Is Interval Timer · Tabata & HIIT free?

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

### Is Delta free?

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

### Do Interval Timer · Tabata & HIIT or Delta have ads?

Neither Interval Timer · Tabata & HIIT nor Delta shows ads.

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

Interval Timer · Tabata & HIIT ships an update monthly, and Delta every 3 days. Most recently, Interval Timer · Tabata & HIIT was updated on October 18, 2026 and Delta on October 28, 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.*