# Vichaivej Checkup vs Check PD

The clearest difference is update cadence: Check PD at every 2 weeks against Vichaivej Checkup's every 4 months. Vichaivej Checkup's advantage is iOS requirement (13.0 vs 15.0). 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.

Vichaivej Checkup ships an update every 4 months, Check PD every 2 weeks. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Vichaivej Checkup | Check PD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 44 MB | 92 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Saivichai Development Company Limited](https://appshunter.io/developer/1726326164) | [The Thai Red Cross Society](https://appshunter.io/developer/1481812826) |

## What reviewers say

### Vichaivej Checkup

[App page](https://appshunter.io/ios/app/vichaivej-checkup/id6476264520)

**Features:** macOS Compatibility

**In-app purchases:** none


### Check PD

[App page](https://appshunter.io/ios/app/check-pd/id6479968872)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vichaivej Checkup free?

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

### Is Check PD free?

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

### Do Vichaivej Checkup or Check PD have ads?

Neither Vichaivej Checkup nor Check PD shows ads.

### Which is updated more often, Vichaivej Checkup or Check PD?

Vichaivej Checkup ships an update every 4 months, and Check PD every 2 weeks. Most recently, Vichaivej Checkup was updated on October 12, 2026 and Check PD on October 5, 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.*