Comparison

SAT Messenger vs D5 Space

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

Head to head

About

SAT Messenger

Features

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Satellite Messenger is a personal satellite communication and location-tracking device app.It provides global satellite coverage in all regions except the North and South Poles. The app supports two-way satellite text messaging, one-touch SOS emergency alerts, location sharing, weather updates, and route tracking, making it a reliable companion for outdoor adventures and remote travel.

About

D5 Space

Features

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The fifth space APP communicates with the STbox satellite terminal through Bluetooth to realize the satellite call function of the mobile phone. Based on the satellite call function APP, the core function of SOS is designed to make emergency calls with one click and cooperate with our emergency management platform for emergency treatment. At the same time, it also provides basic functions such as making satellite phone calls, sending satellite SMS messages and real-time positioning information.

Screenshots

SAT Messenger4 screens

D5 Space4 screens

Verdict

The call

The clearest difference is iOS requirement: D5 Space at 11.0 against SAT Messenger's 13.0. On price, update cadence, 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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on August 10, 2026 and September 8, 2026 respectively.

Scorecard1 real difference · 5 level

SAT Messenger versus D5 Space: the parameters behind the verdict, then further details
Parameter	SAT Messenger	D5 Space
Price	Free	Free
Update frequency	Every 2 weeks	Every 2 weeks
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	13.0	11.0 — better
Further details — not scored
Size	51 MB	52 MB
Age rating	17+	4+
Developer	phwy	Beijing Sylincom Hypermedia Technology Co., Ltd

In-app purchases

None

SAT Messenger

No in-app purchases

None

D5 Space

No in-app purchases

Questions

Is SAT Messenger free?

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

Is D5 Space free?

D5 Space is free to download, with no in-app purchases.

Do SAT Messenger or D5 Space have ads?

Neither SAT Messenger nor D5 Space shows ads.

Which is updated more often, SAT Messenger or D5 Space?

SAT Messenger ships an update every 2 weeks, and D5 Space every 2 weeks. Most recently, SAT Messenger was updated on August 10, 2026 and D5 Space on September 8, 2026.