# D5 Space vs Tiantong Modem

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.

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.

## The numbers

| Metric | D5 Space | Tiantong Modem |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | — | Free |
| Size | 52 MB | 86 MB |
| Requires iOS | **11.0** | 13.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Sylincom Hypermedia Technology Co., Ltd](https://appshunter.io/developer/1467162647) | [CHINA TELECOM Corporation Ltd.](https://appshunter.io/developer/513836032) |

## What reviewers say

### D5 Space

[App page](https://appshunter.io/ios/app/d5-space/id6474482115)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tiantong Modem

[App page](https://appshunter.io/ios/app/tiantong-modem/id6578450401)

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.

**Highlights:** Satellite communication, Offline connectivity, Remote area access, Safety features, Network independent

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is D5 Space free?

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

### Is Tiantong Modem free?

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

### Do D5 Space or Tiantong Modem have ads?

Neither D5 Space nor Tiantong Modem shows ads.

### Which is updated more often, D5 Space or Tiantong Modem?

D5 Space ships an update every 2 weeks, and Tiantong Modem fortnightly. Most recently, D5 Space was updated on September 8, 2026 and Tiantong Modem on August 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*