Comparison

Catálogo Messier vs MeMstar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

Catálogo Messier

Features

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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.

About

MeMstar

Features

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MeMstar est un dispositif de pointage pour télescope ne nécessitant aucune transformation matériel. L'application MeMstar permet de vous connecter au boitier MeMstar. Il vous donne un accès à plus de 15 000 objets stellaires comprenant les planètes, le catalogue Messier, NGC et les étoiles nommées.

Screenshots

Catálogo Messier4 screens

MeMstar4 screens

Verdict

The call

Catálogo Messier and MeMstar are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Catálogo Messier ships an update every 11 months, MeMstar every 9 months. The most recent releases landed on May 17, 2026 and September 11, 2026 respectively.

ScorecardNo meaningful differences

Catálogo Messier versus MeMstar: the parameters behind the verdict, then further details
Parameter	Catálogo Messier	MeMstar
Price	Free	Free
Update frequency	Every 11 months	Every 9 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	14.0	14.0
Further details — not scored
Size	18 MB	25 MB
Age rating	4+	4+
Developer	Pablo Morcillo Perez	Mickael Pannequin

In-app purchases

None

Catálogo Messier

No in-app purchases

None

MeMstar

No in-app purchases

Questions

Is Catálogo Messier free?

Catálogo Messier is free to download, with no in-app purchases.

Is MeMstar free?

MeMstar is free to download, with no in-app purchases.

Do Catálogo Messier or MeMstar have ads?

Neither Catálogo Messier nor MeMstar shows ads.

Which is updated more often, Catálogo Messier or MeMstar?

Catálogo Messier ships an update every 11 months, and MeMstar every 9 months. Most recently, Catálogo Messier was updated on May 17, 2026 and MeMstar on September 11, 2026.