# Watsons TH vs ONESIAM

The clearest difference is rating: Watsons TH at 4.7 against ONESIAM's 4.2. Watsons TH also leads on review sentiment (52% vs 15%) and ratings volume (1.1K vs 10). ONESIAM's advantage is monetization model (ad-supported vs free with in-app purchases). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Watsons TH holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Watsons TH has 1.1K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 52% of Watsons TH's written reviews are positive against 15% of ONESIAM's.

Watsons TH ships an update every 3 weeks, ONESIAM every 11 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Watsons TH | ONESIAM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/watsons-th/id619935224/reviews)** | [4.2 (10 ratings)](https://appshunter.io/ios/app/onesiam/id1589053960/reviews) |
| Number of ratings | **1.1K** | 10 |
| Positive reviews | **52.2% of reviews** | 15.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 199 MB | 124 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AS Watson & Company, Limited](https://appshunter.io/developer/1072296747) | [SIAM PIWAT COMPANY LIMITED](https://appshunter.io/developer/1108807945) |

## What reviewers say

### Watsons TH

[App page](https://appshunter.io/ios/app/watsons-th/id619935224)

Shop for health and beauty products with ease. Virtually try on makeup, access exclusive deals and promotions, and manage your loyalty card. Discover health and beauty trends and tools.

**Highlights:** Virtual makeup try-on, Virtual member card, In-store coupons and vouchers, BMI/BMR Calculator, Health and beauty trend discovery

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


### ONESIAM

[App page](https://appshunter.io/ios/app/onesiam/id1589053960)

This app connects online and offline shopping experiences across multiple retail destinations. It offers a comprehensive range of services, curated content, and exclusive privileges for shoppers. Discover and access services from leading Thai retail and lifestyle destinations.

**Highlights:** Online and offline shopping integration, Access to multiple retail destinations, Curated content and privileges, Full range of services, Bridging digital and physical retail

**In-app purchases:** none


## Frequently asked questions

### Is Watsons TH free?

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

### Is ONESIAM free?

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

### Which has better reviews, Watsons TH or ONESIAM?

Watsons TH is rated higher. Watsons TH averages 4.7 out of 5 from 1.1K ratings, while ONESIAM averages 4.2 from 10 ratings.

### Do Watsons TH or ONESIAM have ads?

Both Watsons TH and ONESIAM show ads.

### Which is updated more often, Watsons TH or ONESIAM?

Watsons TH ships an update every 3 weeks, and ONESIAM every 11 days. Most recently, Watsons TH was updated on November 1, 2026 and ONESIAM on November 3, 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.*