# Ardo vs Interval Timer | HIIT Training

The clearest difference is ads: Ardo at none against Interval Timer | HIIT Training's shown. Ardo also leads on update cadence (every 6 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Ardo sells 1 one-off in-app purchase and Interval Timer | HIIT Training sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Ardo ships an update every 6 days, Interval Timer | HIIT Training fortnightly. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Ardo | Interval Timer | HIIT Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Fortnightly |
| Size | 17 MB | 65 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Romana Samcova](https://appshunter.io/developer/1799133576) | [LS PROGRAMACAO LTDA](https://appshunter.io/developer/1896779603) |

## What reviewers say

### Ardo

[App page](https://appshunter.io/ios/app/ardo-ai-interval-timer/id6782892588)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ardo Pro | $3.99 | one-time |


### Interval Timer | HIIT Training

[App page](https://appshunter.io/ios/app/interval-timer-hiit-training/id6791772563)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro Monthly | $1.99 | per month |
| Interval Timer Pro Annual | $11.99 | per year |
| Interval Timer Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Ardo free?

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

### Is Interval Timer | HIIT Training free?

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

### Do Ardo or Interval Timer | HIIT Training have ads?

Interval Timer | HIIT Training shows ads; Ardo does not.

### Which is updated more often, Ardo or Interval Timer | HIIT Training?

Ardo ships an update every 6 days, and Interval Timer | HIIT Training fortnightly. Most recently, Ardo was updated on September 22, 2026 and Interval Timer | HIIT Training on September 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*