# Vietmap Shield vs VSUM

The clearest difference is update cadence: Vietmap Shield at every 10 days against VSUM's every 2 months. 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.

Vietmap Shield ships an update every 10 days, VSUM every 2 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Vietmap Shield | VSUM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Size | 105 MB | 39 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VietMap](https://appshunter.io/developer/461714641) | [COSPHARM](https://appshunter.io/developer/1489788594) |

## What reviewers say

### Vietmap Shield

[App page](https://appshunter.io/ios/app/vietmap-shield/id6754448222)

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

**In-app purchases:** none


### VSUM

[App page](https://appshunter.io/ios/app/vsum/id6757600388)

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

**In-app purchases:** none


## Frequently asked questions

### Is Vietmap Shield free?

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

### Is VSUM free?

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

### Do Vietmap Shield or VSUM have ads?

Neither Vietmap Shield nor VSUM shows ads.

### Which is updated more often, Vietmap Shield or VSUM?

Vietmap Shield ships an update every 10 days, and VSUM every 2 months. Most recently, Vietmap Shield was updated on November 9, 2026 and VSUM on October 31, 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.*