MoonToStars vs APOD Explorer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
MoonToStars
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Documenting the Universe. Your Personal Astronomical Journal. Turn your backyard stargazing into a lifelong legacy of discovery. Whether youβre hunting for the faintest galaxies in the New General Catalogue or sketching and photographing the rugged craters of the lunar terminator from your telescope. MoonToStars is the ultimate companion for the amateur observer. MoonToStars saves you time and ensures accuracy in your observation entry with data from searchable catalogs to start your observation session. Key Features: - A Master Catalog of the Night Sky: Explore a database of stars and a deep sky catalog (down to magnitude 13). From the famous Messier list to the "hidden gems" like the Hyades and Coma Star Clusters, every target is at your fingertips. - The Lunar Gazetteer: Navigate the Moon with a comprehensive database of craters, maria, and mountain ranges. Search by name or type to plan your next high-power lunar session. - Digital Observerβs Log: Move beyond paper. Record your sessions with specialized entries for Stars, Deep Sky Objects, and the Moon. - Connect your iPad to your iPhone mounted on your telescope: Capture the view exactly as you saw it. Use the integrated sketching canvas for eyepiece drawings and attach your astrophotographs directly to your observation logs. - Precision Data: Coordinates (RA/Dec), magnitude scales, and constellation genitives ensure your records are scientifically accurate and professionally formatted. - Share or print you logs as you want - Night Mode: features a refined, dark-adapted interface to preserve your night vision while you work at the telescope. Subscriptions Start Your Observing Journal for $0.99 per month or $9.99 per year Information about the auto-renewable nature of the subscription: - Payment will be charged to your iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Your account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. License terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
APOD Explorer
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Every day, NASA publishes a new astronomy picture or video, with an explanation written by a professional astronomer. APOD Explorer brings it to you with an experience built for exploring the universe, not just looking at it. THE FULL ARCHIVE SINCE 1995 Over 11,000 photos and videos, from the very first APOD to today. Full-text search across titles and explanations, curated tag collections (galaxies, nebulae, eclipses, Earth from space, and many more), and an "On This Day" section showing what was published on this date across the years. READINGS TAILORED TO YOU, ON DEVICE With Apple Intelligence, every explanation can be generated at different reading levels: quick, general, for kids, or for experts. NASA's original explanation can also be translated right on your device β nothing is sent to any server. FAVORITES THAT SYNC Save the photos you love and access them from any of your devices through iCloud. No one else can see them. WIDGETS AND LOCK SCREEN Two widgets β "Picture of the Day" and "Today's Sky" β that refresh themselves every morning, on the Lock Screen too. SHARE WHAT YOU DISCOVER Share the photo or, when the day's APOD is a video, a poster generated from it, straight from the detail view or from the widgets extension. NO ACCOUNTS, NO ADS, NO TRACKING APOD Explorer doesn't require sign-up and doesn't show ads. If you enjoy the app, you can leave a voluntary tip from Settings β a gesture of support that never unlocks features. A daily window into the universe, with NASA's complete archive always in your pocket.
Screenshots
Verdict
The clearest difference is iOS requirement: MoonToStars at 18.6 against APOD Explorer's 26.0. On price, update cadence, ads and in-app purchases 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. MoonToStars sells 2 in-app purchases, starting at $0.99 per month and APOD Explorer sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
MoonToStars ships an update monthly, APOD Explorer every 6 weeks. Both last shipped on October 31, 2026.
| Parameter | MoonToStars | APOD Explorer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly β better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 β better | 26.0 |
| Further details β not scored | ||
| Size | 74 MB | 39 MB |
| Age rating | 9+ | 4+ |
| Developer | The Technical Area, LLC | Diego Carrera Alonso |
In-app purchases
MoonToStars
- MoonToStars monthly subscription$0.991 Month
- MoonToStars annual subscription$9.991 Year
APOD Explorer
- Lunar tip$1.99
- Planetary tip$3.99
- Stellar tip$8.99







