D5 Space vs Tiantong Modem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D5 Space
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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.
Tiantong Modem
This satellite communication software allows you to stay connected via satellite links when cellular service is unavailable. It ensures safety and connectivity in remote areas without network infrastructure.
- Satellite communication
- Offline connectivity
- Remote area access
- Safety features
- Network independent
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The Tiantong Cat App is a satellite communication software enabling you to maintain communications through satellite links even in areas devoid of cellular signals or network infrastructure, ensuring your safety and connectivity on the go.
Screenshots
Verdict
The clearest difference is iOS requirement: D5 Space at 11.0 against Tiantong Modem's 13.1. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
D5 Space ships an update every 2 weeks, Tiantong Modem fortnightly. The most recent releases landed on September 8, 2026 and August 15, 2026 respectively.
| Parameter | D5 Space | Tiantong Modem |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.1 |
| Further details — not scored | ||
| Size | 52 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Beijing Sylincom Hypermedia Technology Co., Ltd | CHINA TELECOM Corporation Ltd. |
In-app purchases
D5 Space
No in-app purchases
Tiantong Modem
No in-app purchases
