# 临空会展 vs SipTracker

The clearest difference is in-app purchases: 临空会展 at none against SipTracker's 2. 临空会展 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. SipTracker sells 2 in-app purchases, starting at $1.99 per month. 临空会展 asks for nothing beyond the download.

临空会展 ships an update every 9 days, SipTracker fortnightly. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 临空会展 | SipTracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 70 MB | 24 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Shanghai East Best & Lansheng Smart Technology Co., Ltd.](https://appshunter.io/developer/1221366182) | [Ofbit](https://appshunter.io/developer/1773852262) |

## What reviewers say

### 临空会展

[App page](https://appshunter.io/ios/app/id6447049629)

**Features:** macOS Compatibility

**In-app purchases:** none


### SipTracker

[App page](https://appshunter.io/ios/app/siptracker/id6749020331)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $19.99 | per year |


## Frequently asked questions

### Is 临空会展 free?

临空会展 is free to download, with no in-app purchases.

### Is SipTracker free?

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

### Do 临空会展 or SipTracker have ads?

Neither 临空会展 nor SipTracker shows ads.

### Which is updated more often, 临空会展 or SipTracker?

临空会展 ships an update every 9 days, and SipTracker fortnightly. Most recently, 临空会展 was updated on October 4, 2026 and SipTracker on September 27, 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.*