# Intervalla vs Interval Timer by STRNTH

The clearest difference is in-app purchases: Intervalla at none against Interval Timer by STRNTH's 1. Intervalla also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Intervalla ships an update every 3 weeks, Interval Timer by STRNTH every 10 days. The most recent releases landed on September 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Intervalla | Interval Timer by STRNTH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 3 MB | 55 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [LJOSNING AS](https://appshunter.io/developer/1831022124) | [Next Big Leap Ltd](https://appshunter.io/developer/369344938) |

## What reviewers say

### Intervalla

[App page](https://appshunter.io/ios/app/intervalla/id6760928874)

**Features:** macOS Compatibility

**In-app purchases:** none


### Interval Timer by STRNTH

[App page](https://appshunter.io/ios/app/interval-timer-by-strnth/id6787253056)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $9.99 | one-time |


## Frequently asked questions

### Is Intervalla free?

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

### Is Interval Timer by STRNTH free?

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

### Do Intervalla or Interval Timer by STRNTH have ads?

Interval Timer by STRNTH shows ads; Intervalla does not.

### Which is updated more often, Intervalla or Interval Timer by STRNTH?

Intervalla ships an update every 3 weeks, and Interval Timer by STRNTH every 10 days. Most recently, Intervalla was updated on September 25, 2026 and Interval Timer by STRNTH on October 5, 2026.

---

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