Hubble Space Telescope Tracker vs Stargraph Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hubble Space Telescope Tracker
Follow NASA's Hubble Space Telescope mission in real time. Explore a gallery of stunning images, engage in discussions, and learn about space. Receive notifications for new discoveries and test your knowledge with quizzes.
- Real-time mission progress
- Image gallery
- Discussion forums
- Notifications for new images
- 3D Solar system model
- Ask an Astronomer feature
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With Hubble Space Telescope Tracker app, you can follow the mission's progress in real time. Check out the latest images in the gallery and discuss topics in the discussions. Receive notifications about new images. App offers - First Images - Live information - Image Gallery - Discussion - Ask an Astronomer - Frequently Asked Questions - Quiz - Wallpapers - 3D Solar system What is Hubble Space Telescope? The Hubble Space Telescope is a powerful space-based observatory launched in 1990. It captures detailed images of distant galaxies and celestial objects in visible, ultraviolet, and infrared light. Positioned above Earth's atmosphere, it provides clear, distortion-free views, leading to groundbreaking discoveries in astronomy. Operated jointly by NASA and ESA, Hubble has significantly expanded our understanding of the universe.
Stargraph Pro
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The Stargraph Pro companion app pairs with the Stargraph hardware to bring push-to telescope guidance right to your phone. Featuring an advanced guidance system, Stargraph will help you align your telescope with targets in the night sky regardless of their visibility. The most powerful features include: - Helping you quickly align with any star, no matter your skill level - Teaching you about the stars you're looking at - Providing a built-in planetarium that is keyed to your telescope - Operating with remarkable accuracy across most telescope setups - Compatible with your standard altitude-azimuth, Dobsonian, fork, and equatorial telescope mounts - And the system learns as you use it, getting progressively more accurate throughout your session
Screenshots
Verdict
The clearest difference is in-app purchases: Stargraph Pro at none against Hubble Space Telescope Tracker's 1. Stargraph Pro also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). Hubble Space Telescope Tracker's advantage is iOS requirement (12.0 vs 15.6). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Hubble Space Telescope Tracker sells 1 one-off in-app purchase. Stargraph Pro asks for nothing beyond the download.
Hubble Space Telescope Tracker ships an update every 3 months, Stargraph Pro every 2 weeks. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.
| Parameter | Hubble Space Telescope Tracker | Stargraph Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 72 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | KAKHA GIORGASHVILI | Josh Cole |
In-app purchases
Hubble Space Telescope Tracker
- Premium$2.99
Stargraph Pro
No in-app purchases
Questions
Is Hubble Space Telescope Tracker free?
Is Stargraph Pro free?
Do Hubble Space Telescope Tracker or Stargraph Pro have ads?
Which is updated more often, Hubble Space Telescope Tracker or Stargraph Pro?
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