# Image Stack vs Astrian Light

The clearest difference is in-app purchases: Astrian Light at none against Image Stack's 1. Astrian Light also leads on update cadence (daily vs monthly). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Image Stack sells 1 one-off in-app purchase. Astrian Light asks for nothing beyond the download.

Image Stack ships an update monthly, Astrian Light daily. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Image Stack | Astrian Light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/astrian-light/id6798375806/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 38 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Witt](https://appshunter.io/developer/1438848391) | [Javier Linero](https://appshunter.io/developer/1814104966) |

## What reviewers say

### Image Stack

[App page](https://appshunter.io/ios/app/image-stack/id6757393848)

This app streamlines image processing by allowing batch conversion, resizing, and renaming. Apply presets, add watermarks, and adjust quality settings with ease. It's designed for efficient handling of multiple images across devices.

**Highlights:** Batch image conversion, Apply multiple presets, Rename files, Resize images, Add overlays/watermarks, Adjust quality and metadata, iCloud preset sync

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $9.99 | one-time |


### Astrian Light

[App page](https://appshunter.io/ios/app/astrian-light/id6798375806)

Plan your celestial photography with precise calculations for eclipses, golden hour, and astrophotography. Visualize the sky's events with your real horizon and location data. Includes tools for hyperfocal distance and exposure.

**Highlights:** Eclipse shadow mapping, Real horizon calculations, Golden and Blue Hour timing, Sky object identification, Trip planning tools, Photography calculators, Camera and lens gear saving

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

**In-app purchases:** none


## Frequently asked questions

### Is Image Stack free?

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

### Is Astrian Light free?

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

### Do Image Stack or Astrian Light have ads?

Neither Image Stack nor Astrian Light shows ads.

### Which is updated more often, Image Stack or Astrian Light?

Image Stack ships an update monthly, and Astrian Light daily. Most recently, Image Stack was updated on September 29, 2026 and Astrian Light on October 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.*