# HIIT & Tabata Timer with Music vs RoundShift

The clearest difference is ads: RoundShift at none against HIIT & Tabata Timer with Music's shown. RoundShift also leads on update cadence (every 2 days vs every 5 months) and device support (4 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. HIIT & Tabata Timer with Music sells 2 one-off in-app purchases and RoundShift sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

HIIT & Tabata Timer with Music ships an update every 5 months, RoundShift every 2 days. The most recent releases landed on September 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | HIIT & Tabata Timer with Music | RoundShift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/roundshift-interval-timer/id6793125180/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 143 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [KEITA SHOJI](https://appshunter.io/developer/1758998640) | [Carl Law](https://appshunter.io/developer/1671704999) |

## What reviewers say

### HIIT & Tabata Timer with Music

[App page](https://appshunter.io/ios/app/hiit-and-tabata-timer-with-music/id6754508192)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $1.99 | one-time |
| 音楽解放 | $2.99 | one-time |


### RoundShift

[App page](https://appshunter.io/ios/app/roundshift-interval-timer/id6793125180)

This interval timer app provides voice coaching for various workout types, allowing you to keep your eyes on your exercise rather than the screen. It offers customizable presets, multiple voice options, and can even display workouts on a larger screen for group sessions. Advanced features like adaptive rest and Apple Health integration are available with a Pro upgrade.

**Highlights:** Voice coaching for workouts, Customizable interval presets, Plain language workout builder, Multi-language coach voices, Screen-off and face-down operation, AirPlay for group sessions, Adaptive rest with Apple Watch

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intervo Pro (Lifetime) | $4.99 | one-time |


## Frequently asked questions

### Is HIIT & Tabata Timer with Music free?

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

### Is RoundShift free?

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

### Do HIIT & Tabata Timer with Music or RoundShift have ads?

HIIT & Tabata Timer with Music shows ads; RoundShift does not.

### Which is updated more often, HIIT & Tabata Timer with Music or RoundShift?

HIIT & Tabata Timer with Music ships an update every 5 months, and RoundShift every 2 days. Most recently, HIIT & Tabata Timer with Music was updated on September 30, 2026 and RoundShift on October 15, 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.*