Tiantong Modem vs CSJ Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
CSJ Pro
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CSJ APP是一款全新的掌上自拍APP，通过本APP可连接设备的WiFi远程控制设备、观看视频、进行拍照和录像、录像回放、图片查看等操作。
Screenshots
Verdict
The clearest difference is iOS requirement: Tiantong Modem at 13.1 against CSJ Pro's 15.6. 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.
Tiantong Modem ships an update fortnightly, CSJ Pro every 9 days. Both last shipped on October 24, 2026.
| Parameter | Tiantong Modem | CSJ Pro |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Fortnightly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 86 MB | 53 MB |
| Age rating | 4+ | 12+ |
| Developer | CHINA TELECOM Corporation Ltd. | 元明 苏 |
In-app purchases
Tiantong Modem
No in-app purchases
CSJ Pro
No in-app purchases
