# Interval Timer vs Shift

The clearest difference is in-app purchases: Shift at none against Interval Timer's 1. Interval Timer's advantage is iOS requirement (17.0 vs 26). On price, update cadence, ads and device support there is nothing between them.

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

Interval Timer ships an update every 2 days, Shift every 4 days. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Interval Timer | Shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/interval-timer-sound-cue/id6803740279/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 8 MB |
| Requires iOS | **17.0** | 26 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Octopus Software LLC](https://appshunter.io/developer/1815869696) | [Jorick van Meijeren](https://appshunter.io/developer/1882811593) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-sound-cue/id6803740279)

Customize your workout timing with spoken countdowns and sound cues. Build complex interval routines for various fitness activities and stay focused on your training without constantly checking the screen.

**Highlights:** Customizable interval timing, Spoken countdowns and sound cues, Support for HIIT, Tabata, and circuits, Adjustable sound and haptic feedback, Workout saving and organization, Offline use and background audio

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Workout Upgrade | $4.99 | one-time |


### Shift

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer free?

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

### Is Shift free?

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

### Do Interval Timer or Shift have ads?

Neither Interval Timer nor Shift shows ads.

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

Interval Timer ships an update every 2 days, and Shift every 4 days. Most recently, Interval Timer was updated on September 18, 2026 and Shift on September 12, 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.*