# Penglai vs AVACAST Tx

The clearest difference is update cadence: AVACAST Tx at every 3 months against Penglai's every 28 months. Penglai's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Penglai ships an update every 28 months, AVACAST Tx every 3 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Penglai | AVACAST Tx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Size | 359 MB | 25 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JienHua Gu](https://appshunter.io/developer/1417826117) | [禾麟數碼科技股份有限公司](https://appshunter.io/developer/1748717249) |

## What reviewers say

### Penglai

[App page](https://appshunter.io/ios/app/penglai/id1417826118)

**Features:** macOS Compatibility

**In-app purchases:** none


### AVACAST Tx

[App page](https://appshunter.io/ios/app/avacast-tx/id6503278356)

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

**In-app purchases:** none


## Frequently asked questions

### Is Penglai free?

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

### Is AVACAST Tx free?

AVACAST Tx is free to download, with no in-app purchases.

### Do Penglai or AVACAST Tx have ads?

Neither Penglai nor AVACAST Tx shows ads.

### Which is updated more often, Penglai or AVACAST Tx?

Penglai ships an update every 28 months, and AVACAST Tx every 3 months. Most recently, Penglai was updated on November 2, 2026 and AVACAST Tx on November 4, 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.*