# Interval Timer vs IntervalTimer Duo

The clearest difference is in-app purchases: Interval Timer at none against IntervalTimer Duo's 1. Interval Timer also leads on iOS requirement (16.0 vs 26.1). IntervalTimer Duo's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 17 months). On price there is nothing between them.

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

Interval Timer ships an update every 17 months, IntervalTimer Duo every 3 weeks. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Interval Timer | IntervalTimer Duo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-onetime/id6744575997/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 25 MB | 10 MB |
| Requires iOS | **16.0** | 26.1 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Vignesh Viswanathan](https://appshunter.io/developer/1687983437) | [kosuke konuma](https://appshunter.io/developer/1767116232) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-onetime/id6744575997)

Easily set custom intervals for workouts and rest periods with this intuitive timer. Enjoy beep guides and seamless music playback during your sessions. Track your progress with detailed history and statistics.

**Highlights:** Customizable intervals, Workout and rest timers, Beep guides, Music playback compatibility, Workout history, Progress statistics

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

**In-app purchases:** none


### IntervalTimer Duo

[App page](https://appshunter.io/ios/app/intervaltimer-duo/id6753626424)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is Interval Timer free?

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

### Is IntervalTimer Duo free?

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

### Do Interval Timer or IntervalTimer Duo have ads?

Interval Timer shows ads; IntervalTimer Duo does not.

### Which is updated more often, Interval Timer or IntervalTimer Duo?

Interval Timer ships an update every 17 months, and IntervalTimer Duo every 3 weeks. Most recently, Interval Timer was updated on October 6, 2026 and IntervalTimer Duo on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*