# Interval Timer ~ HIIT & Tabata vs VRFitLevelShifter

The clearest difference is ads: VRFitLevelShifter at none against Interval Timer ~ HIIT & Tabata's shown. VRFitLevelShifter also leads on iOS requirement (16 vs 18.0). Interval Timer ~ HIIT & Tabata's advantage is update cadence (every 2 days vs every 3 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Interval Timer ~ HIIT & Tabata ships an update every 2 days, VRFitLevelShifter every 3 weeks. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Interval Timer ~ HIIT & Tabata | VRFitLevelShifter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 9 MB | 40 MB |
| Requires iOS | 18.0 | **16** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [manabu ueda](https://appshunter.io/developer/1606163236) | [MtoME Co., Ltd.](https://appshunter.io/developer/362285160) |

## What reviewers say

### Interval Timer ~ HIIT & Tabata

[App page](https://appshunter.io/ios/app/interval-timer-hiit-and-tabata/id6762538816)

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

**In-app purchases:** none


### VRFitLevelShifter

[App page](https://appshunter.io/ios/app/vrfitlevelshifter/id6771265472)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

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

Interval Timer ~ HIIT & Tabata is free to download, with no in-app purchases.

### Is VRFitLevelShifter free?

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

### Do Interval Timer ~ HIIT & Tabata or VRFitLevelShifter have ads?

Interval Timer ~ HIIT & Tabata shows ads; VRFitLevelShifter does not.

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

Interval Timer ~ HIIT & Tabata ships an update every 2 days, and VRFitLevelShifter every 3 weeks. Most recently, Interval Timer ~ HIIT & Tabata was updated on October 6, 2026 and VRFitLevelShifter on October 10, 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.*