# VietSmile vs PostRexAI

The clearest difference is in-app purchases: VietSmile at none against PostRexAI's 2. VietSmile also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PostRexAI sells 2 in-app purchases, starting at $9.99 per month. VietSmile asks for nothing beyond the download.

VietSmile ships an update every 3 weeks, PostRexAI every 3 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | VietSmile | PostRexAI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 69 MB | 13 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [SOC JOINT STOCK COMPANY](https://appshunter.io/developer/1424233495) | [Derya YILDIZ](https://appshunter.io/developer/1838187946) |

## What reviewers say

### VietSmile

[App page](https://appshunter.io/ios/app/vietsmile/id1574306838)

A social networking platform designed for connection, entertainment, communication, and business support. It offers a secure and engaging environment for users to interact and share content. Users can also reward valuable posts with fan tokens.

**Highlights:** Social networking platform, Connection and communication, Entertainment features, Business support tools, Content gifting (fan tokens)

**Features:** macOS Compatibility

**In-app purchases:** none


### PostRexAI

[App page](https://appshunter.io/ios/app/postrexai/id6772724565)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PostRexAI Pro | $9.99 | per month |
| PostRexAI Pro | $99.99 | per year |


## Frequently asked questions

### Is VietSmile free?

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

### Is PostRexAI free?

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

### Do VietSmile or PostRexAI have ads?

Neither VietSmile nor PostRexAI shows ads.

### Which is updated more often, VietSmile or PostRexAI?

VietSmile ships an update every 3 weeks, and PostRexAI every 3 months. Most recently, VietSmile was updated on October 9, 2026 and PostRexAI on October 6, 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.*