Lunar X vs CatalogueMessier
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Lunar X
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Use Lunar X to find out the date of the next appearance of the Werner's X on the Moon's surface. It can be seen with a pair of binoculars or a small telescope. You need to know the current Moon phase in the sky? Lunar X provides this information and shows the corresponding image on the screen. If you want to learn about the lunar calendar in order to plan an astronomy outing, a night photography session, or a hunting trip, Lunar X has you covered for many years to come!
CatalogueMessier
Explore the Messier, NGC, and Caldwell astronomical catalogs. Log your observations with photos, filter celestial objects by type, and track your progress with detailed statistics. Export your data for further analysis.
- View Messier, NGC, and Caldwell catalogs
- Add observation photos
- Filter objects by category
- Track observation progress
- Export observation data
- Multi-language support
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The application allows you to view the 110 objects in the Messier catalog, the 812 main objects in the New General Catalog (NGC), and the 109 objects in the Caldwell catalog. You can add photos taken during your observations for each object. You can filter objects by category (galaxies, nebulae, clusters) and view the observation order for the annual Messier Marathon. Statistics allow you to track the progress of your observations. Export your photos to a spreadsheet summarizing your observations. Statistics allow you to track the progress of your observations. β¨Privacy: - No ads. - No data collection. - No registration (neither by email nor locally). - No tracking. - No location tracking. - No connection to a server to collect information. Languages: French, English, Italian, German, Dutch, Chinese, Japanese, Spanish, Portuguese, Dutch.
Screenshots
Verdict
The clearest difference is price: Lunar X at Free against CatalogueMessier's $0.99. Lunar X also leads on iOS requirement (14.1 vs 17.0). On update cadence, ads, in-app purchases and device support 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
Lunar X is free to download; CatalogueMessier costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Lunar X ships an update every 5 weeks, CatalogueMessier every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Lunar X | CatalogueMessier |
|---|---|---|
| Price | Free β better | $0.99 |
| Positive reviews | β | 0.0% of reviews |
| Update frequency | Every 5 weeks | Every 3 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | β | Paid |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 14.1 β better | 17.0 |
| Further details β not scored | ||
| Size | 4 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Claude Duplessis | Laurent DURLIAT |
In-app purchases
Lunar X
No in-app purchases
CatalogueMessier
No in-app purchases
Questions
Is Lunar X free?
Is CatalogueMessier free?
Do Lunar X or CatalogueMessier have ads?
Which is updated more often, Lunar X or CatalogueMessier?
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