# Interval Working vs My SISU

The clearest difference is ads: My SISU at none against Interval Working's shown. My SISU also leads on update cadence (every 4 weeks vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Interval Working ships an update every 6 months, My SISU every 4 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Interval Working | My SISU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Size | 51 MB | 66 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [David Fernandez-Vegue Garcia](https://appshunter.io/developer/1576667472) | [Codefish SAL](https://appshunter.io/developer/1106508165) |

## What reviewers say

### Interval Working

[App page](https://appshunter.io/ios/app/interval-working/id1576667470)

**Features:** Vision Pro support

**In-app purchases:** none


### My SISU

[App page](https://appshunter.io/ios/app/my-sisu/id6743835585)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Working free?

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

### Is My SISU free?

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

### Do Interval Working or My SISU have ads?

Interval Working shows ads; My SISU does not.

### Which is updated more often, Interval Working or My SISU?

Interval Working ships an update every 6 months, and My SISU every 4 weeks. Most recently, Interval Working was updated on October 17, 2026 and My SISU on October 16, 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.*