# Interval Timer & Tabata & HIIT vs WaterBoost

The clearest difference is in-app purchases: WaterBoost at none against Interval Timer & Tabata & HIIT's 2. WaterBoost also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Interval Timer & Tabata & HIIT sells 2 in-app purchases, starting at $0.99 per month. WaterBoost asks for nothing beyond the download.

Interval Timer & Tabata & HIIT ships an update every 2 months, WaterBoost every 3 weeks. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Interval Timer & Tabata & HIIT | WaterBoost |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 14 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Erkan Can](https://appshunter.io/developer/533400011) | [NURBANU KARAKAYA](https://appshunter.io/developer/1780781889) |

## What reviewers say

### Interval Timer & Tabata & HIIT

[App page](https://appshunter.io/ios/app/interval-timer-and-tabata-and-hiit/id6477618130)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription (Monthly) | $0.99 | per month |
| Premium Subscription (1 Year) | $4.99 | per year |


### WaterBoost

[App page](https://appshunter.io/ios/app/waterboost/id6751126865)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

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

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

### Is WaterBoost free?

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

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

Neither Interval Timer & Tabata & HIIT nor WaterBoost shows ads.

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

Interval Timer & Tabata & HIIT ships an update every 2 months, and WaterBoost every 3 weeks. Most recently, Interval Timer & Tabata & HIIT was updated on October 12, 2026 and WaterBoost on October 11, 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.*