Astro Kit vs Catálogo Messier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Astro Kit
This utility app assists in telescope setup by providing essential information like GPS coordinates and universal time. It also includes a compass and calculates the local hour angle for Polaris. Designed for amateur astronomers, it simplifies the alignment process.
- GPS coordinates
- Compass functionality
- Universal time display
- Polaris local hour angle computation
- Telescope alignment assistance
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Astro Kit is intended to provide useful informations while setting up a telescope. - gps coordinates - compass - universal time - compute polaris local hour angle
Catálogo Messier
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Simple application to have the Messier catalogue of objects on your mobile phone and be able to consult its most relevant information. Add your favourite objects to the list of favourites for quicker access. Filter the list of objects by visibility according to your current location.
Screenshots
Verdict
The clearest difference is update cadence: Astro Kit at every 3 months against Catálogo Messier's every 9 months. Catálogo Messier's advantage is iOS requirement (15.6 vs 17.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Astro Kit ships an update every 3 months, Catálogo Messier every 9 months. The most recent releases landed on October 23, 2026 and October 5, 2026 respectively.
| Parameter | Astro Kit | Catálogo Messier |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (51 ratings) — better | — |
| Positive reviews | 86.7% of reviews | — |
| Number of ratings | 51 — better | — |
| Update frequency | Every 3 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Jérôme Diaz | Pablo Morcillo Perez |
In-app purchases
Astro Kit
No in-app purchases
Catálogo Messier
No in-app purchases
Questions
Is Astro Kit free?
Is Catálogo Messier free?
Do Astro Kit or Catálogo Messier have ads?
Which is updated more often, Astro Kit or Catálogo Messier?
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