# Interval Timer・HIIT Timer vs Aqua8tine

The clearest difference is in-app purchases: Aqua8tine at none against Interval Timer・HIIT Timer's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Interval Timer・HIIT Timer sells 2 in-app purchases, starting at $2.99 per month. Aqua8tine asks for nothing beyond the download.

Interval Timer・HIIT Timer ships an update every 4 days, Aqua8tine every 6 days. The most recent releases landed on October 28, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Interval Timer・HIIT Timer | Aqua8tine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/interval-timerhiit-timer/id6748070178/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 days |
| Monetization | Freemium | — |
| Size | 74 MB | 29 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Reva Desai](https://appshunter.io/developer/1780266324) | [Khalil Missaoui](https://appshunter.io/developer/1822610639) |

## What reviewers say

### Interval Timer・HIIT Timer

[App page](https://appshunter.io/ios/app/interval-timerhiit-timer/id6748070178)

This app provides a customizable interval timer for various fitness activities like HIIT, strength training, and yoga. It includes real-time audio cues, heart rate monitoring using your phone's camera, and automatic workout logging to track progress.

**Highlights:** Customizable workout intervals, Real-time audio and voice cues, Heart rate monitoring via camera, Automatic workout logging, Workout history and statistics, Drag-and-set interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Access | $2.99 | per month |
| Premium Yearly Access | $19.99 | per year |


### Aqua8tine

[App page](https://appshunter.io/ios/app/aqua8tine/id6748324129)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer・HIIT Timer free?

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

### Is Aqua8tine free?

Aqua8tine is free to download, with no in-app purchases.

### Do Interval Timer・HIIT Timer or Aqua8tine have ads?

Neither Interval Timer・HIIT Timer nor Aqua8tine shows ads.

### Which is updated more often, Interval Timer・HIIT Timer or Aqua8tine?

Interval Timer・HIIT Timer ships an update every 4 days, and Aqua8tine every 6 days. Most recently, Interval Timer・HIIT Timer was updated on October 28, 2026 and Aqua8tine on November 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.*