# KeyPlus vs KeyPlus3

The clearest difference is update cadence: KeyPlus3 at every 3 weeks against KeyPlus's every 7 months. KeyPlus's advantage is iOS requirement (9.0 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.

KeyPlus ships an update every 7 months, KeyPlus3 every 3 weeks. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | KeyPlus | KeyPlus3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 82 MB | 30 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seng Hee Lee](https://appshunter.io/developer/1531109154) | [Special One Co., Ltd.](https://appshunter.io/developer/1521605263) |

## What reviewers say

### KeyPlus

[App page](https://appshunter.io/ios/app/keyplus-smart-lock/id1493257076)

**Features:** macOS Compatibility

**In-app purchases:** none


### KeyPlus3

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KeyPlus free?

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

### Is KeyPlus3 free?

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

### Do KeyPlus or KeyPlus3 have ads?

Neither KeyPlus nor KeyPlus3 shows ads.

### Which is updated more often, KeyPlus or KeyPlus3?

KeyPlus ships an update every 7 months, and KeyPlus3 every 3 weeks. Most recently, KeyPlus was updated on September 21, 2026 and KeyPlus3 on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*