# DUC Sampling 2 vs THIET THACH

The clearest difference is update cadence: THIET THACH at monthly against DUC Sampling 2's every 45 months. DUC Sampling 2'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.

DUC Sampling 2 ships an update every 45 months, THIET THACH monthly. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | DUC Sampling 2 | THIET THACH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thiet-thach/id1610695962/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Monthly** |
| Monetization | — | Free |
| Size | 20 MB | 41 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Duyen Nguyen Thi My](https://appshunter.io/developer/1504184285) | [THIET THACH Group](https://appshunter.io/developer/1610695964) |

## What reviewers say

### DUC Sampling 2

[App page](https://appshunter.io/ios/app/duc-sampling-2/id1518756669)

**Features:** macOS Compatibility

**In-app purchases:** none


### THIET THACH

[App page](https://appshunter.io/ios/app/thiet-thach/id1610695962)

This app assists first-time homeowners in planning and managing their home construction projects. It offers a library of design templates, practical building experience videos, and a tool to estimate construction costs per square meter. Connect directly with engineers and architects for online consultations and project management.

**Highlights:** Extensive home design template library, Video library for building experience, Self-service home construction cost calculator, Online consultations with engineers and architects, Project management tool for clients and THIET THACH Group

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

**In-app purchases:** none


## Frequently asked questions

### Is DUC Sampling 2 free?

DUC Sampling 2 is free to download, with no in-app purchases.

### Is THIET THACH free?

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

### Do DUC Sampling 2 or THIET THACH have ads?

Neither DUC Sampling 2 nor THIET THACH shows ads.

### Which is updated more often, DUC Sampling 2 or THIET THACH?

DUC Sampling 2 ships an update every 45 months, and THIET THACH monthly. Most recently, DUC Sampling 2 was updated on October 25, 2026 and THIET THACH on October 21, 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.*