# Keyng vs HCC2D Decoder

The clearest difference is update cadence: HCC2D Decoder at fortnightly against Keyng's every 2 months. Keyng's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, 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.

Keyng ships an update every 2 months, HCC2D Decoder fortnightly. The most recent releases landed on September 16, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Keyng | HCC2D Decoder |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 51 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Uhlmann & Zacher GmbH](https://appshunter.io/developer/1413776543) | [Marco Querini](https://appshunter.io/developer/1893348109) |

## What reviewers say

### Keyng

[App page](https://appshunter.io/ios/app/keyng/id1450613501)

Manage electronic locking systems from your smartphone. Authorize transponder keys, invite users, and update firmware for Clex private systems. Ideal for small to medium-sized buildings.

**Highlights:** Bluetooth® Low Energy communication, Manage electronic locking cylinders and handles, Authorize and manage transponder keys, Invite users to open locks via smartphone, Update firmware and read event logs, NFC identification for keys

**Features:** macOS Compatibility

**In-app purchases:** none


### HCC2D Decoder

[App page](https://appshunter.io/ios/app/hcc2d-decoder/id6762202762)

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

**In-app purchases:** none


## Frequently asked questions

### Is Keyng free?

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

### Is HCC2D Decoder free?

HCC2D Decoder is free to download, with no in-app purchases.

### Do Keyng or HCC2D Decoder have ads?

Neither Keyng nor HCC2D Decoder shows ads.

### Which is updated more often, Keyng or HCC2D Decoder?

Keyng ships an update every 2 months, and HCC2D Decoder fortnightly. Most recently, Keyng was updated on September 16, 2026 and HCC2D Decoder on September 3, 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.*