# Interval Timer | HIIT Training vs Rondo

The clearest difference is in-app purchases: Rondo at none against Interval Timer | HIIT Training's 3. Rondo also leads on ads (none vs shown). Interval Timer | HIIT Training's advantage is iOS requirement (16.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Interval Timer | HIIT Training sells 3 in-app purchases, starting at $1.99 per month. Rondo asks for nothing beyond the download.

Interval Timer | HIIT Training ships an update every 10 days, Rondo every 3 weeks. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Interval Timer | HIIT Training | Rondo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-training/id6791772563/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 86 MB | 3 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LS PROGRAMACAO LTDA](https://appshunter.io/developer/1896779603) | [Anton Litmansky](https://appshunter.io/developer/1818644150) |

## What reviewers say

### Interval Timer | HIIT Training

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

This app provides a customizable interval timer for various training activities like HIIT and Tabata. Users can build custom workouts with named phases, sounds, and vibrations, and save them as presets that sync across devices. It also supports background operation with screen off.

**Highlights:** Customizable workout builder, Nestable repeat blocks, Custom phases with names, colors, sounds, and vibrations, Drag and drop reordering, Save and reuse workout presets, Syncs between iPhone and Apple Watch, Background operation with screen off

**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 |


### Rondo

[App page](https://appshunter.io/ios/app/rondo-custom-interval-timer/id6798016716)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer | HIIT Training free?

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

### Is Rondo free?

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

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

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

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

Interval Timer | HIIT Training ships an update every 10 days, and Rondo every 3 weeks. Most recently, Interval Timer | HIIT Training was updated on October 31, 2026 and Rondo on October 24, 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.*