# StarTracker HD vs SystemeSolaire

The clearest difference is update cadence: StarTracker HD at every 5 months against SystemeSolaire's every 55 months. StarTracker HD also leads on iOS requirement (12.0 vs 15.6). SystemeSolaire's advantage is price ($1.99 vs $3.99) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

StarTracker HD costs $3.99 and SystemeSolaire $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, SystemeSolaire every 55 months. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | StarTracker HD | SystemeSolaire |
| --- | --- | --- |
| 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 55 months |
| Monetization | Paid | — |
| Size | 25 MB | 596 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [身吉 潘](https://appshunter.io/developer/341563645) | [NMS Narcisse Mavoha Solutions Sarl](https://appshunter.io/developer/963941606) |

## 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)


### SystemeSolaire

[App page](https://appshunter.io/ios/app/systemesolaire/id1440418549)

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

**In-app purchases:** none


## Frequently asked questions

### Is StarTracker HD free?

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

### Is SystemeSolaire free?

SystemeSolaire costs $1.99, with no in-app purchases.

### Do StarTracker HD or SystemeSolaire have ads?

Neither StarTracker HD nor SystemeSolaire shows ads.

### Which is updated more often, StarTracker HD or SystemeSolaire?

StarTracker HD ships an update every 5 months, and SystemeSolaire every 55 months. Most recently, StarTracker HD was updated on October 8, 2026 and SystemeSolaire on October 4, 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.*