# Interlink SG vs DONG Connection

The clearest difference is in-app purchases: DONG Connection at none against Interlink SG's 1. DONG Connection also leads on update cadence (every 4 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Interlink SG sells 1 one-off in-app purchase. DONG Connection asks for nothing beyond the download.

Interlink SG ships an update every 9 days, DONG Connection every 4 days. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Interlink SG | DONG Connection |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 34 MB | 45 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nur Hakim Chong Kar Hao](https://appshunter.io/developer/1830827319) | [上海洞天国际旅行社有限公司](https://appshunter.io/developer/1690110930) |

## What reviewers say

### Interlink SG

[App page](https://appshunter.io/ios/app/interlink-sg/id6749619089)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| removeads | $2.99 | one-time |


### DONG Connection

[App page](https://appshunter.io/ios/app/dong-connection/id6759031120)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interlink SG free?

Interlink SG is free to download, with in-app purchases available.

### Is DONG Connection free?

DONG Connection is free to download, with no in-app purchases.

### Do Interlink SG or DONG Connection have ads?

Neither Interlink SG nor DONG Connection shows ads.

### Which is updated more often, Interlink SG or DONG Connection?

Interlink SG ships an update every 9 days, and DONG Connection every 4 days. Most recently, Interlink SG was updated on October 5, 2026 and DONG Connection on September 29, 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.*