# Zeus Focus Stacking vs Eagle Image Stacker

Zeus Focus Stacking and Eagle Image Stacker are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Zeus Focus Stacking sells 2 in-app purchases, starting at $3.99 per month and Eagle Image Stacker sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Zeus Focus Stacking | Eagle Image Stacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/eagle-image-stacker/id6757908614/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | — | Free with in-app purchases |
| Size | 68 MB | 31 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Roberto Sartori](https://appshunter.io/developer/1118295214) | [AL MUATASIM AL MAADI](https://appshunter.io/developer/1869537738) |

## What reviewers say

### 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 |


### Eagle Image Stacker

[App page](https://appshunter.io/ios/app/eagle-image-stacker/id6757908614)

Astro stacking and RAW image processing toolkit for iPhone. Align, stack, and export high-quality results for star fields, galaxies, planets, and more. Features on-device processing for privacy and flexibility.

**Highlights:** RAW, DNG, ProRAW, JPEG, HEIF, TIFF support, Astro Mode for deep-sky objects, Planets Mode with ROI tracking, RAW converter and inspector, Calibration tools (dark, flat frames), On-device processing, Export high-quality results

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eagle Pro Monthly | $9.99 | per month |
| Eagle Pro Annual | $40.99 | per year |
| Eagle Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Zeus Focus Stacking free?

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

### Is Eagle Image Stacker free?

Eagle Image Stacker is free to download, with in-app purchases available.

### Do Zeus Focus Stacking or Eagle Image Stacker have ads?

Neither Zeus Focus Stacking nor Eagle Image Stacker shows ads.

---

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