# Satrelle vs Astrian Light

The clearest difference is in-app purchases: Astrian Light at none against Satrelle's 1. Astrian Light also leads on update cadence (daily vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

Satrelle ships an update every 3 weeks, Astrian Light daily. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Satrelle | 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 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | — | Free |
| Size | 4 MB | 38 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [HAND FORGED LLC](https://appshunter.io/developer/6786104861) | [Javier Linero](https://appshunter.io/developer/1814104966) |

## What reviewers say

### Satrelle

[App page](https://appshunter.io/ios/app/satrelle-eclipse-planner/id6787551895)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Photographer's Kit | $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 Satrelle free?

Satrelle 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 Satrelle or Astrian Light have ads?

Neither Satrelle nor Astrian Light shows ads.

### Which is updated more often, Satrelle or Astrian Light?

Satrelle ships an update every 3 weeks, and Astrian Light daily. Most recently, Satrelle 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.*