Stellar Catalogue vs My Sky
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Stellar Catalogue
Discover celestial objects visible in the night sky in real-time based on your location. Plan your observations with custom locations, simulate dates, and manage your optical equipment. Save favorite objects and lists for quick access.
- Real-time sky observation guide
- Object discovery by location
- Skyview navigation mode
- Custom observation planning
- Optical equipment setup
- Personalized object lists
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Donβt know what to observe in the sky tonight? Stellar Catalogue shows you instantly. Discover in real time whatβs visible above you, with precise data and tools designed for observers of all levels. WHAT YOU CAN DO β’ Find out what to observe tonight based on your location β’ View planets, Moon, Sun, stars and deep sky objects β’ Explore constellations, comets and space stations β’ Use Skyview mode to navigate the night sky PLAN YOUR OBSERVATIONS β’ Create custom observing locations β’ Simulate date and time to plan your sessions β’ Save your own observation lists OPTICAL SETUP β’ Add telescopes, eyepieces and sensors β’ Preview the real field of view of your objects PERSONALIZATION β’ Save your favorite objects β’ Quickly access what you want to observe Stellar Catalogue is designed to make stargazing simple, fast and precise. Try it free for 15 days. For reports, suggestions and requests, write to the support email support@stellarcatalogue.com Privacy Policy: https://www.stellarcatalogue.com/app-privacy-policy-english/ Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
My Sky
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My Sky is a personal astronomy star map for deep-sky observers. Photograph a nebula, galaxy, star cluster, or planet, then pin it onto a live night-sky chart where it belongs. Browse a private deep-sky album, search stars and deep-sky objects, and set your observing site so the map matches tonightβs sky. β’ Interactive star map with constellations and coordinate grid β’ Pin your own nebula, galaxy, and planet photos to the sky β’ Private album for deep-sky and solar-system images β’ Search stars, planets, Messier objects, and other DSOs β’ Region and language settings β’ Optional watermark when you save No account required. Your astronomy photos stay on your device.
Screenshots
Verdict
The clearest difference is update cadence: Stellar Catalogue at every 2 weeks against My Sky's every 3 months. Stellar Catalogue also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Stellar Catalogue sells 4 in-app purchases, starting at $2.49 per month and My Sky sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Stellar Catalogue ships an update every 2 weeks, My Sky every 3 months. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.
| Parameter | Stellar Catalogue | My Sky |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 2 weeks β better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | β |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 15.0 β better | 16.0 |
| Further details β not scored | ||
| Size | 169 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Diego Campagnaro | ε² ζ΄ͺ |
In-app purchases
Stellar Catalogue
- Monthly subscription$2.491 Month
- Six months subscription$11.496 Months
- Annual Subscription$23.491 Year
- PRO Version$12.99
My Sky
- Donate to the Developer$0.99
Questions
Is Stellar Catalogue free?
Is My Sky free?
Do Stellar Catalogue or My Sky have ads?
Which is updated more often, Stellar Catalogue or My Sky?
Other comparisons
