# VIETSTEM vs Dưỡng sinh

The clearest difference is in-app purchases: Dưỡng sinh at none against VIETSTEM's 1. Dưỡng sinh also leads on update cadence (every 6 months vs every 24 months). VIETSTEM's advantage is iOS requirement (11.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. VIETSTEM sells 1 one-off in-app purchase. Dưỡng sinh asks for nothing beyond the download.

VIETSTEM ships an update every 24 months, Dưỡng sinh every 6 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | VIETSTEM | Dưỡng sinh |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 6 months** |
| Size | 12 MB | 13 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [INSTITUTE VIETSTEM COMPANY LIMITED](https://appshunter.io/developer/1484787821) | [hongmy Dang](https://appshunter.io/developer/1677185334) |

## What reviewers say

### VIETSTEM

[App page](https://appshunter.io/ios/app/vietstem/id1484973725)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12 Tháng | $36.99 | one-time |


### Dưỡng sinh

[App page](https://appshunter.io/ios/app/duong-sinh/id6446291745)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VIETSTEM free?

VIETSTEM is free to download, with in-app purchases available.

### Is Dưỡng sinh free?

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

### Do VIETSTEM or Dưỡng sinh have ads?

Neither VIETSTEM nor Dưỡng sinh shows ads.

### Which is updated more often, VIETSTEM or Dưỡng sinh?

VIETSTEM ships an update every 24 months, and Dưỡng sinh every 6 months. Most recently, VIETSTEM was updated on October 16, 2026 and Dưỡng sinh on October 17, 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.*