# iFocus Stacking vs Add Astra

The clearest difference is price: Add Astra at Free against iFocus Stacking's $39.99. Add Astra also leads on review sentiment (100% vs 56%) and rating (5.0 vs 1.0). iFocus Stacking's advantage is in-app purchases (none vs 5) and device support (3 vs 1). On ratings volume and ads there is nothing between them.

Add Astra is free to download; iFocus Stacking costs $39.99 up front. Add Astra sells 5 in-app purchases, starting at $10.99 per month. iFocus Stacking asks for nothing beyond the download.

Add Astra holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 56% of iFocus Stacking's written reviews are positive against 100% of Add Astra's.

iFocus Stacking ships an update fortnightly, Add Astra every 2 days. The most recent releases landed on September 19, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | iFocus Stacking | Add Astra |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/ifocus-stacking/id6752693470/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/add-astra/id6757625634/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 102 MB | 120 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Linosec](https://appshunter.io/developer/1771206390) | [APParent LLC](https://appshunter.io/developer/1867945954) |

## What reviewers say

### iFocus Stacking

[App page](https://appshunter.io/ios/app/ifocus-stacking/id6752693470)

This app creates perfectly sharp photographs by combining multiple images shot at different focus distances. Achieve unprecedented depth of field for intricate macro details, landscapes, or product shots. It offers professional-grade tools for image alignment and processing.

**Highlights:** Advanced focus stacking algorithm, Professional image alignment, Flexible input options, Batch processing, Customizable post-processing, Real-time progress tracking

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

**In-app purchases:** none


### Add Astra

[App page](https://appshunter.io/ios/app/add-astra/id6757625634)

Overlay accurate star positions onto your photos using image metadata and machine learning. The app intelligently identifies the sky to ensure stars are placed realistically, avoiding unwanted artifacts.

**Highlights:** Accurate star positioning, Uses Yale Bright Star Catalog, Extracts image metadata, Machine learning sky detection, Realistic star overlays

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Credits a Month + No Ads | $10.99 | per month |
| One Credit | $0.29 | one-time |
| Five Credits | $0.99 | one-time |
| Ten Credits | $1.99 | one-time |
| 50 Credits | $7.49 | one-time |


## Frequently asked questions

### Is iFocus Stacking free?

iFocus Stacking costs $39.99, with no in-app purchases.

### Is Add Astra free?

Add Astra is free to download, with in-app purchases available.

### Which has better reviews, iFocus Stacking or Add Astra?

Add Astra is rated higher. iFocus Stacking averages 1.0 out of 5 from 2 ratings, while Add Astra averages 5.0 from 3 ratings.

### Do iFocus Stacking or Add Astra have ads?

Neither iFocus Stacking nor Add Astra shows ads.

### Which is updated more often, iFocus Stacking or Add Astra?

iFocus Stacking ships an update fortnightly, and Add Astra every 2 days. Most recently, iFocus Stacking was updated on September 19, 2026 and Add Astra on June 5, 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.*