# SAFE HUD(세이프허드) vs KeyPlus3

The clearest difference is update cadence: KeyPlus3 at every 2 weeks against SAFE HUD(세이프허드)'s every 3 months. SAFE HUD(세이프허드)'s advantage is iOS requirement (13.0 vs 15.0). 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.

SAFE HUD(세이프허드) ships an update every 3 months, KeyPlus3 every 2 weeks. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | SAFE HUD(세이프허드) | KeyPlus3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 4 MB | 32 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [RoadPia Co., Ltd.](https://appshunter.io/developer/366252913) | [Special One Co., Ltd.](https://appshunter.io/developer/1521605263) |

## What reviewers say

### SAFE HUD(세이프허드)

[App page](https://appshunter.io/ios/app/safe-hud/id6443913023)

**Features:** macOS Compatibility

**In-app purchases:** none


### KeyPlus3

[App page](https://appshunter.io/ios/app/keyplus3-digital-key/id6747149011)

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

**In-app purchases:** none


## Frequently asked questions

### Is SAFE HUD(세이프허드) free?

SAFE HUD(세이프허드) is free to download, with no in-app purchases.

### Is KeyPlus3 free?

KeyPlus3 is free to download, with no in-app purchases.

### Do SAFE HUD(세이프허드) or KeyPlus3 have ads?

Neither SAFE HUD(세이프허드) nor KeyPlus3 shows ads.

### Which is updated more often, SAFE HUD(세이프허드) or KeyPlus3?

SAFE HUD(세이프허드) ships an update every 3 months, and KeyPlus3 every 2 weeks. Most recently, SAFE HUD(세이프허드) was updated on November 12, 2026 and KeyPlus3 on November 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.*