# HIIT Timer vs Shift

The clearest difference is in-app purchases: Shift at none against HIIT Timer's 1. Shift also leads on update cadence (every 5 days vs every 15 months). HIIT Timer's advantage is iOS requirement (15.1 vs 26). On price, ads and device support there is nothing between them.

Both are free to download. HIIT Timer sells 1 one-off in-app purchase. Shift asks for nothing beyond the download.

HIIT Timer ships an update every 15 months, Shift every 5 days. Both last shipped on November 8, 2026.

## The numbers

| Metric | HIIT Timer | Shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/shift-workout-interval-timer/id6805132734/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 54 MB | 52 MB |
| Requires iOS | **15.1** | 26 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [PO CHUN LIU](https://appshunter.io/developer/1828860780) | [Jorick van Meijeren](https://appshunter.io/developer/1882811593) |

## What reviewers say

### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer-tabata-and-intervals/id6749133445)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HIIT Timer Pro | $5.99 | one-time |


### Shift

[App page](https://appshunter.io/ios/app/shift-workout-interval-timer/id6805132734)

This interval timer app simplifies workout setup with customizable work, rest, and repeat cycles. It offers background timing, voice cues, and a live activity display for seamless tracking. Your workout history is stored locally for easy recall.

**Highlights:** Customizable work, rest, and repeat intervals, Background workout timing, Voice cues and tone options, Live Activity on Lock Screen/Dynamic Island, Workout history stored locally, Sideways workout display option

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

**In-app purchases:** none


## Frequently asked questions

### Is HIIT Timer free?

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

### Is Shift free?

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

### Do HIIT Timer or Shift have ads?

Neither HIIT Timer nor Shift shows ads.

### Which is updated more often, HIIT Timer or Shift?

HIIT Timer ships an update every 15 months, and Shift every 5 days. Most recently, HIIT Timer was updated on November 8, 2026 and Shift 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.*