# SG Checkpoint vs Interlink SG

The clearest difference is in-app purchases: SG Checkpoint at none against Interlink SG's 1. Interlink SG's advantage is ads (none vs shown) and update cadence (every 9 days vs every 2 months). On price and device support there is nothing between them.

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

SG Checkpoint ships an update every 2 months, Interlink SG every 9 days. The most recent releases landed on August 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | SG Checkpoint | Interlink SG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 5 MB | 34 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shaozhuang Chen](https://appshunter.io/developer/1692461668) | [Nur Hakim Chong Kar Hao](https://appshunter.io/developer/1830827319) |

## What reviewers say

### SG Checkpoint

[App page](https://appshunter.io/ios/app/sg-checkpoint-traffic-timing/id6472817578)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is SG Checkpoint free?

SG Checkpoint is free to download, with no in-app purchases.

### Is Interlink SG free?

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

### Do SG Checkpoint or Interlink SG have ads?

SG Checkpoint shows ads; Interlink SG does not.

### Which is updated more often, SG Checkpoint or Interlink SG?

SG Checkpoint ships an update every 2 months, and Interlink SG every 9 days. Most recently, SG Checkpoint was updated on August 27, 2026 and Interlink SG on September 17, 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.*