# Astronomy Picture vs Shadow Echo

The clearest difference is update cadence: Astronomy Picture at fortnightly against Shadow Echo's every 2 months. Astronomy Picture also leads on iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Astronomy Picture ships an update fortnightly, Shadow Echo every 2 months. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Astronomy Picture | Shadow Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shadow-echo/id6760043764/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | — | Free |
| Size | 25 MB | 4 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Edwin Mejia](https://appshunter.io/developer/1620400021) | [Ibrahim Hammoud](https://appshunter.io/developer/1882473861) |

## What reviewers say

### Astronomy Picture

[App page](https://appshunter.io/ios/app/astronomy-picture-apod/id6475737010)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shadow Echo

[App page](https://appshunter.io/ios/app/shadow-echo/id6760043764)

A minimalist puzzle-platformer where light and shadow are your tools. Drag light sources to cast shadows that form platforms and solve atmospheric puzzles in a mysterious silhouette world. Collect story fragments and enjoy ambient soundscapes.

**Highlights:** Light and shadow manipulation for puzzles, 6 hand-crafted levels, Progressive mechanics with different light types, Hidden story fragments, Atmospheric audio, Silhouette art style, Short levels for quick sessions

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

**In-app purchases:** none


## Frequently asked questions

### Is Astronomy Picture free?

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

### Is Shadow Echo free?

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

### Do Astronomy Picture or Shadow Echo have ads?

Neither Astronomy Picture nor Shadow Echo shows ads.

### Which is updated more often, Astronomy Picture or Shadow Echo?

Astronomy Picture ships an update fortnightly, and Shadow Echo every 2 months. Most recently, Astronomy Picture was updated on October 17, 2026 and Shadow Echo on October 1, 2026.

---

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