# THIET THACH vs BMSVN

The clearest difference is update cadence: THIET THACH at monthly against BMSVN's every 4 months. BMSVN'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.

THIET THACH ships an update monthly, BMSVN every 4 months. The most recent releases landed on October 4, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | THIET THACH | BMSVN |
| --- | --- | --- |
| 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 | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 41 MB | 98 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [THIET THACH Group](https://appshunter.io/developer/1610695964) | [Nam Nguyen](https://appshunter.io/developer/1809387478) |

## What reviewers say

### 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


### BMSVN

[App page](https://appshunter.io/ios/app/bmsvn/id6445888878)

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

**In-app purchases:** none


## Frequently asked questions

### Is THIET THACH free?

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

### Is BMSVN free?

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

### Do THIET THACH or BMSVN have ads?

Neither THIET THACH nor BMSVN shows ads.

### Which is updated more often, THIET THACH or BMSVN?

THIET THACH ships an update monthly, and BMSVN every 4 months. Most recently, THIET THACH was updated on October 4, 2026 and BMSVN on September 25, 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.*