# StarTracker HD vs The Solar System

The clearest difference is update cadence: StarTracker HD at every 5 months against The Solar System's every 29 months. The Solar System's advantage is price ($1.99 vs $3.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

StarTracker HD costs $3.99 and The Solar System $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

StarTracker HD ships an update every 5 months, The Solar System every 29 months. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | StarTracker HD | The Solar System |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | **[4.0 (43 ratings)](https://appshunter.io/ios/app/startracker-hd-mobile-skymap/id449605942/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 59.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 29 months |
| Monetization | Paid | — |
| Size | 25 MB | 112 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [身吉 潘](https://appshunter.io/developer/341563645) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### StarTracker HD

[App page](https://appshunter.io/ios/app/startracker-hd-mobile-skymap/id449605942)

Explore the night sky with this augmented reality planetarium. Identify stars, constellations, planets, and deep sky objects by simply pointing your device at the sky. All data is available offline.

**Highlights:** Augmented Reality Star Gazing, Identify 8000+ stars, planets, and constellations, Offline data access, Search and lock celestial objects, Time Machine feature, High-quality graphics

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth, fluid graphics and responsive gyroscope tracking
- 👍 Intuitive and easy-to-use interface
- 🌟 Beautiful HD visuals and stunning design
- 📍 Accurate real-time sky positioning and planet/constellation identification
- 🎓 Excellent educational tool for learning astronomy

**What reviewers complain about**

- 🐛 Frequent crashes on various devices
- 🐛 Compass/gyroscope malfunction issues
- 🐛 Screen display problems on larger tablets
- ❌ Limited functionality and educational depth
- ❌ Lack of object information and descriptions

**Reported bugs**

- App crashes on startup or during use
- Compass direction incorrect (north pointing wrong direction)
- Gyroscope not responding or locked
- Share button causes crashes
- Forward/share button greying out and causing screen loss

**Requested features**

- Add search functionality for celestial objects
- Include ISS and satellite tracking
- Display object information (distance, magnitude, color, brightness)
- Add ecliptic line visibility option
- Show coordinate information (RA, Dec, Alt, Azimuth)


### The Solar System

[App page](https://appshunter.io/ios/app/the-solar-system-ar/id1322087991)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StarTracker HD free?

StarTracker HD costs $3.99, with no in-app purchases.

### Is The Solar System free?

The Solar System costs $1.99, with no in-app purchases.

### Do StarTracker HD or The Solar System have ads?

Neither StarTracker HD nor The Solar System shows ads.

### Which is updated more often, StarTracker HD or The Solar System?

StarTracker HD ships an update every 5 months, and The Solar System every 29 months. Most recently, StarTracker HD was updated on October 22, 2026 and The Solar System on October 14, 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.*