# DEFCON ONE vs Vimar VIEW Key

The clearest difference is iOS requirement: DEFCON ONE at 11.0 against Vimar VIEW Key's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DEFCON ONE ships an update every 6 months, Vimar VIEW Key every 5 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | DEFCON ONE | Vimar VIEW Key |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Size | 46 MB | 55 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IMG Sicurezza Italia S.R.L.S.](https://appshunter.io/developer/1495771178) | [Vimar S.p.A.](https://appshunter.io/developer/401438010) |

## What reviewers say

### DEFCON ONE

[App page](https://appshunter.io/ios/app/defcon-one/id1535786389)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vimar VIEW Key

[App page](https://appshunter.io/ios/app/vimar-view-key/id6444653876)

**In-app purchases:** none


## Frequently asked questions

### Is DEFCON ONE free?

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

### Is Vimar VIEW Key free?

Vimar VIEW Key is free to download, with no in-app purchases.

### Do DEFCON ONE or Vimar VIEW Key have ads?

Neither DEFCON ONE nor Vimar VIEW Key shows ads.

### Which is updated more often, DEFCON ONE or Vimar VIEW Key?

DEFCON ONE ships an update every 6 months, and Vimar VIEW Key every 5 months. Most recently, DEFCON ONE was updated on October 6, 2026 and Vimar VIEW Key on October 8, 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.*