Comparison

MeMstar vs SQM Mobile

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

Head to head
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.

About

SQM Mobile

Features
Read full description

Bring all your sky quality measurements together in one place. SQM Mobile is the ideal companion for handheld Sky Quality Meters, automatically synchronizing field measurements with SQM Toolbox on your Mac. It also imports measurements exported from Dark Sky Meter Pro, making it easy to build a single long-term archive of all your observations. KEY FEATURES Field-Ready Data Collection * Quick and easy measurement entry for handheld SQM devices * Manual entry of measurements from Dark Sky Meter * Automatic GPS location recording for each measurement * Timestamp for accurate astronomical correlation * Offline measurement storage – sync whenever a connection becomes available * Bubble level for accurate zenith pointing * Import measurements exported from Dark Sky Meter Pro Smart Location Features * Automatic GPS coordinate capture * Manual location override (to define local sky-background conditions during site surveys) * Perfect for camping trips, dark-sky site surveys and travel observations Automatic Cloud Sync * Seamlessly sync measurements to SQM Toolbox on your Mac via iCloud * Private, secure storage – only you can access your measurements * Works anywhere with an internet connection – no complex setup required * Real-time synchronization across all your Apple devices Quick Analysis * Instant Bortle classification for every measurement * On-device light pollution assessment * Comparison with natural sky-background brightness * Simple graphical display including twilight conditions * Measurement validation and quality indicators * Clean, intuitive interface designed for field use Astronomical Context * Automatic twilight condition detection * Moon phase information for every measurement * Sun elevation calculations Simple and Reliable * Designed for easy use in the dark * Large, clear controls for nighttime operation * No account setup required – simply use your existing iCloud account Perfect for * Amateur astronomers and citizen scientists carrying out site surveys * Researchers monitoring light pollution * Dark-sky organizations documenting observing conditions * Anyone using handheld SQM instruments or Dark Sky Meter who wants long-term storage, synchronization and analysis of their measurements Requires: iOS 17.0 or later, iCloud account Works with: Unihedron Sky Quality Meter (SQM, SQM-L), Dark Sky Meter Pro imports, and manual entry from Dark Sky Meter. Companion to: SQM Toolbox for macOS (available separately)

Screenshots

MeMstar4 screens
SQM Mobile4 screens

Verdict

The call

The clearest difference is update cadence: SQM Mobile at every 4 weeks against MeMstar's every 9 months. MeMstar's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 17.6). On price, ads and in-app purchases 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

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

MeMstar ships an update every 9 months, SQM Mobile every 4 weeks. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 3 level
MeMstar versus SQM Mobile: the parameters behind the verdict, then further details
ParameterMeMstarSQM Mobile
PriceFreeFree
Update frequencyEvery 9 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.0 — better17.6
Further details — not scored
Size25 MB42 MB
Age rating4+4+
DeveloperMickael PannequinGerSpatial

In-app purchases

None

MeMstar

No in-app purchases

None

SQM Mobile

No in-app purchases

Questions

Is MeMstar free?
MeMstar is free to download, with no in-app purchases.
Is SQM Mobile free?
SQM Mobile is free to download, with no in-app purchases.
Do MeMstar or SQM Mobile have ads?
Neither MeMstar nor SQM Mobile shows ads.
Which is updated more often, MeMstar or SQM Mobile?
MeMstar ships an update every 9 months, and SQM Mobile every 4 weeks. Most recently, MeMstar was updated on September 11, 2026 and SQM Mobile on September 9, 2026.

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