Unistellar vs Gravity by Vaonis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unistellar
Control your smart telescope, explore thousands of celestial objects, and observe them live. Save and share your discoveries, or contribute to real scientific research with citizen science missions.
- Telescope control
- Explore 5000+ celestial objects
- Live astronomical observation
- Instant image sharing
- RAW image download
- Citizen science missions
Read full descriptionHide full description
The Unistellar App is your command center for all Unistellar telescopes, designed to help astronomers explore the cosmos with ease. 1. Control your telescope: align, point, and operate your smart telescope directly from the App. 2. Explore 5000 celestial objects: galaxies, nebulae, star clusters, planets, Moon, Sun, comets, and asteroids. 3. Observe live: see your target appear within seconds, with more details and colors revealed as the signal accumulates. 4. Share instantly: save your images as PNGs and share them in one click. 5. Go pro: download RAW images for advanced post-processing. 6. Join citizen science missions: contribute to real research with NASA and SETI—track asteroids, detect exoplanets, and more.
Gravity by Vaonis
Transform your smartphone into a smart telescope to explore the cosmos. Capture stunning images of galaxies, nebulae, and star clusters with advanced image stacking. Observe the Sun and Moon with dedicated modes and educational content.
- Smartphone as smart telescope
- 25x optical zoom
- Live image stacking
- Sun and Moon observation
- Deep sky object photography
- Landscape and wildlife photography
- Educational cosmic content
Read full descriptionHide full description
Gravity by Vaonis is the dedicated application for the Hestia instrument, transforming your smartphone into a smart telescope! Intuitive and user-friendly, this mobile application enables you to explore the Cosmos with ease. Track the activities of the Sun and the Moon, and immortalize your journey through the Universe by photographing galaxies, nebulae, and star clusters at your fingertips. CAMERA MODE Boost the power of your smartphone to achieve a 25x optical zoom on your mobile's camera, allowing you to observe the wonders of the Universe up close. IMAGE PROCESSING Make the invisible visible with Hestia's live image stacking technology. Choose your target and let the magic happen. Gravity by Vaonis enhances your observation experience using exclusive image processing algorithms. It intelligently combines and aligns multiple short-exposure images captured by your smartphone to create a single high-quality photograph. SPACE CENTER Monitor the real-time activity of the Moon and the Sun. LANDSCAPE MODE With Gravity by Vaonis, your surroundings become a new playground. Observe and photograph distant landscapes or even wild animals in their natural habitat. SOLAR AND LUNAR MODE Easily and safely observe the closest star to Earth during the day using Hestia's solar filter. Track the sun's activity and witness the evolution of solar spots and faculae. Track the sun's activity by examining the variations on its visible surface. Once night falls, admire the details of the lunar craters and track the different phases of the Moon. DEEP SKY MODE Observe the brightest objects in the deep sky. The Gravity by Vaonis application will guide you step by step to help you take your own photos of galaxies, nebulae, and star clusters. EDUCATIONAL CONTENT Gravity by Vaonis offers a comprehensive educational journey, providing you with the opportunity to explore the mysteries of the Universe.
Screenshots
Verdict
The clearest difference is rating: Unistellar at 3.8 against Gravity by Vaonis's 2.7. Gravity by Vaonis's advantage is iOS requirement (16.0 vs 18.0). On price, review sentiment, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
Unistellar holds the better App Store score, 3.8 against 2.7. Both are backed by a comparable volume of ratings — 100 and 49 respectively. Written reviews complicate that: 45% of Unistellar's written reviews are positive against 48% of Gravity by Vaonis's, so the app with the better star average is not the one people write more warmly about.
Unistellar ships an update every 6 weeks, Gravity by Vaonis every 2 months. The most recent releases landed on August 14, 2026 and September 24, 2026 respectively.
| Parameter | Unistellar | Gravity by Vaonis |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (100 ratings) — better | 2.7 (49 ratings) |
| Positive reviews | 44.8% of reviews | 47.7% of reviews — better |
| Number of ratings | 100 — better | 49 |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 584 MB | 331 MB |
| Age rating | 4+ | 4+ |
| Developer | Unistellar | Vaonis |
Customer experience
Unistellar
Gravity by Vaonis
In-app purchases
Unistellar
No in-app purchases
Gravity by Vaonis
No in-app purchases
Questions
Is Unistellar free?
Is Gravity by Vaonis free?
Which has better reviews, Unistellar or Gravity by Vaonis?
Do Unistellar or Gravity by Vaonis have ads?
Which is updated more often, Unistellar or Gravity by Vaonis?
Other comparisons
