# Green Tech vs Đại Việt Phả

The clearest difference is update cadence: Đại Việt Phả at every 3 days against Green Tech's monthly. Green Tech's advantage is iOS requirement (13.0 vs 15.1). 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.

Green Tech ships an update monthly, Đại Việt Phả every 3 days. The most recent releases landed on September 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Green Tech | Đại Việt Phả |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-viet-pha/id6761435052/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | — | Free |
| Size | 21 MB | 36 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Nguyen Hai Nam](https://appshunter.io/developer/1773335503) | [Bach Tuan Anh](https://appshunter.io/developer/1570579656) |

## What reviewers say

### Green Tech

[App page](https://appshunter.io/ios/app/green-tech/id6737282607)

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

**In-app purchases:** none


### Đại Việt Phả

[App page](https://appshunter.io/ios/app/ai-viet-pha/id6761435052)

This app digitizes Vietnamese family trees, connecting generations. It allows users to preserve memories, manage family funds, and care for ancestral graves, all within a platform designed for the Vietnamese community.

**Highlights:** Digitize family trees, Connect generations, Preserve memories, Manage family funds, Care for ancestral graves

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

**In-app purchases:** none


## Frequently asked questions

### Is Green Tech free?

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

### Is Đại Việt Phả free?

Đại Việt Phả is free to download, with no in-app purchases.

### Do Green Tech or Đại Việt Phả have ads?

Neither Green Tech nor Đại Việt Phả shows ads.

### Which is updated more often, Green Tech or Đại Việt Phả?

Green Tech ships an update monthly, and Đại Việt Phả every 3 days. Most recently, Green Tech was updated on September 24, 2026 and Đại Việt Phả on October 7, 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.*