# Astrarium Sky Map vs DeepSpace

The clearest difference is price: Astrarium Sky Map at Free against DeepSpace's $0.99. Astrarium Sky Map also leads on iOS requirement (17.0 vs 26.0). DeepSpace's advantage is in-app purchases (none vs 3) and update cadence (every 5 days vs every 3 weeks). On ads and device support there is nothing between them.

Astrarium Sky Map is free to download; DeepSpace costs $0.99 up front. Astrarium Sky Map sells 3 in-app purchases, starting at $3.99 per 7 days. DeepSpace asks for nothing beyond the download.

Astrarium Sky Map ships an update every 3 weeks, DeepSpace every 5 days. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Astrarium Sky Map | DeepSpace |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/deepspace-starviewer/id6790279077/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | — | Paid |
| Size | 195 MB | 4 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Nhan Tran](https://appshunter.io/developer/1796345687) | [Alexandr Garlock Development House LLC](https://appshunter.io/developer/353093375) |

## What reviewers say

### Astrarium Sky Map

[App page](https://appshunter.io/ios/app/astrarium-sky-map/id6785950209)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Yearly | $14.99 | per year |
| Onetime | $34.99 | one-time |


### DeepSpace

[App page](https://appshunter.io/ios/app/deepspace-starviewer/id6790279077)

Explore the night sky with a real-time star map. Identify stars, planets, constellations, and deep-sky objects by simply pointing your device. Features include a sky search, time machine, and observation journal.

**Highlights:** Gyroscope sky map, 16 constellations with mythology, 110 Messier objects, Tap to lock on celestial objects, Sky search and jump, Tonight's Sky view, Time Machine for planning, Observation journal

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Astrarium Sky Map free?

Astrarium Sky Map is free to download, with in-app purchases available.

### Is DeepSpace free?

DeepSpace costs $0.99, with no in-app purchases.

### Do Astrarium Sky Map or DeepSpace have ads?

Neither Astrarium Sky Map nor DeepSpace shows ads.

### Which is updated more often, Astrarium Sky Map or DeepSpace?

Astrarium Sky Map ships an update every 3 weeks, and DeepSpace every 5 days. Most recently, Astrarium Sky Map was updated on October 16, 2026 and DeepSpace on October 11, 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.*