# InSpacer vs Zeus Focus Stacking

The clearest difference is in-app purchases: InSpacer at none against Zeus Focus Stacking's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Zeus Focus Stacking sells 2 in-app purchases, starting at $3.99 per month. InSpacer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | InSpacer | Zeus Focus Stacking |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 208 MB | 68 MB |
| Requires iOS | **17.0** | 18.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CHECK & VISIT](https://appshunter.io/developer/1710184744) | [Roberto Sartori](https://appshunter.io/developer/1118295214) |

## What reviewers say

### InSpacer

[App page](https://appshunter.io/ios/app/inspacer/id6470632967)

**In-app purchases:** none


### Zeus Focus Stacking

[App page](https://appshunter.io/ios/app/zeus-focus-stacking/id6471365204)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zeus Pro · Monthly | $3.99 | per month |
| Zeus Pro · Yearly | $24.99 | per year |


## Frequently asked questions

### Is InSpacer free?

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

### Is Zeus Focus Stacking free?

Zeus Focus Stacking is free to download, with in-app purchases available.

### Do InSpacer or Zeus Focus Stacking have ads?

Neither InSpacer nor Zeus Focus Stacking shows ads.

### Which is updated more often, InSpacer or Zeus Focus Stacking?

InSpacer ships an update weekly, and Zeus Focus Stacking weekly. Most recently, InSpacer was updated on September 18, 2026 and Zeus Focus Stacking on September 13, 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.*