# VIETSTEM vs CASALINK

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

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

VIETSTEM ships an update every 24 months, CASALINK weekly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | VIETSTEM | CASALINK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 24 months | **Weekly** |
| Size | 12 MB | 49 MB |
| Requires iOS | **11.0** | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [INSTITUTE VIETSTEM COMPANY LIMITED](https://appshunter.io/developer/1484787821) | [HOANG VU INVESTMENT AND TECHNOLOGIES COMPANY LIMITED](https://appshunter.io/developer/1760100890) |

## 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 |


### CASALINK

[App page](https://appshunter.io/ios/app/casalink/id6739828667)

**In-app purchases:** none


## Frequently asked questions

### Is VIETSTEM free?

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

### Is CASALINK free?

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

### Do VIETSTEM or CASALINK have ads?

Neither VIETSTEM nor CASALINK shows ads.

### Which is updated more often, VIETSTEM or CASALINK?

VIETSTEM ships an update every 24 months, and CASALINK weekly. Most recently, VIETSTEM was updated on October 29, 2026 and CASALINK on October 30, 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.*