# Keyng — Clex private management tool > Mobile management for Uhlmann & Zacher Clex electronic locking systems. (iPhone/iPad app by Uhlmann & Zacher GmbH.) - Source: https://appshunter.io/ios/app/keyng/id1450613501 (this page in markdown: same URL + `.md`) - Developer: [Uhlmann & Zacher GmbH](https://appshunter.io/developer/1413776543) - Category: Utilities, Productivity - Price: Free - Age rating: 4+ - Requires: iOS 15.0 · 51 MB - Languages: American English, French (France), German (Germany), Italian, European Spanish - Released: 2020-03-25 - Data updated: 2026-07-13 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/keyng/id1450613501/reviews.md ## What is Keyng? With the Keyng app, users of the Clex private system from Uhlmann & Zacher can manage their electronic locking system in a mobile and uncomplicated manner. Smartphones and locks communicate via Bluetooth®Low Energy. Smart access control for small and medium-sized buildings The solution is especially well suited for locking system management of small to medium-sized buildings such as doctors' clinics, law firms, small offices or private homes. Flexible management of the locking units When setting up for the first time, the locking units, e.g. electronic locking cylinders or electronic door handles, are first read and named via Bluetooth® Low Energy connection. Then the transponder key can be authorised by holding it up at the door and registered in the app by specifying the name and description. The transponder keys can also be identified and managed via Near Field Communication (NFC) directly on the smartphone. Thus, keys can be easily added for the locking unit or removed individually without the key holder being within range. Secure opening using smartphone Invite employees or guests electronically to open a lock using their smartphone. For safety purpose, invitations and authorisations are sent separately by email and text message - the door is opened using the free Clex Key app. Apart from the costs for SMS / MMS, there are no additional costs for mobile keys. Service functions Update the firmware or start dismantling and replacing the battery of electronic cylinders directly from Keyng. Get an overview by reading the event logs from the locks. System requirements - Bluetooth ®- enabled Clex private locking units from Uhlmann & Zacher - MIFARE® Desfire transponder key - Clex private mobile enabled service key ## Key features - 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 ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/keyng/id1450613501/reviews.md ### 1/5 — Zugriff auf Adressbuch *2024-11-17, version 2.1.127* Warum muss ich der App Zugriff auf mein gesamtes Adressbuch geben, wenn ich nur mein eigenes Smartphone einlernen möchte? Inakzeptabel! ### 4/5 — App ist gut *2022-05-24, version 2.0.15* Selbsterklärende App und recht intuitiv. Leider kann man iOS Links bei Einladungen nicht anklicken. Bitte dringend fixen! ### 5/5 — Alles perfekt *2021-11-15, version 2.0* Optisch noch nicht der Hammer, aber alle Funkion laufen bis jetzt. ### 3/5 — Firmwareupdate ist ausgegraut *2021-09-13, version 2.0* Mit der App lässt sich kein Firmwareupdate durchführen. Der Punkt ist auch nach der Verbindung mit dem Zylinder grau dargestellt. Können Sie hier helfen? ### 5/5 — Erster Eindruck ist prima *2020-05-09, version 1.3.1* Die Funktion mit der App ist prima. Man kann visuell ersehen welche Transponder an welchen Zylinder berechtigt sind. Das Handling ist einfach. Auch die protokollierten Ereignisse sind mit der App abrufbar. Die Abfrage des Batteriestatus ist jedoch nicht möglich und wäre wünschenswert. ## Frequently asked questions about Keyng ### What is Keyng used for? Keyng is a mobile application designed for users of the Clex private system from Uhlmann & Zacher. It allows for the management of electronic locking systems, including authorizing keys, inviting users, and performing service functions. ### What devices does Keyng support? Keyng is available for iPhone, iPad, and iPod. It requires a Bluetooth®-enabled Clex private locking unit from Uhlmann & Zacher, a MIFARE® Desfire transponder key, and a Clex private mobile-enabled service key. ### How does Keyng manage access? Keyng enables you to invite employees or guests electronically to open a lock using their smartphone. Invitations and authorizations are sent separately via email and text message for security purposes. ### Can I manage keys without the key holder present? Yes, Keyng allows for the identification and management of transponder keys via Near Field Communication (NFC) directly on your smartphone. This means keys can be added or removed individually without the key holder needing to be in range. ### What service functions does Keyng offer? Keyng provides service functions such as updating the firmware of electronic cylinders, initiating dismantling and battery replacement, and reading event logs from the locks to get an overview of access history. ### Is Keyng free to use? Yes, Keyng is available for free download and use. The only potential costs are for SMS/MMS messages sent for invitations and authorizations. ### How often is Keyng updated? The latest version of Keyng is 2.1.133, which was last updated on March 31, 2025. Uhlmann & Zacher GmbH regularly releases updates to improve functionality and reliability. ### What is the age rating for Keyng? Keyng has an age rating of 4+, making it suitable for a wide range of users. It is designed for managing access control systems in various environments. ## Version history (last 5 releases) ### 2.1.133 — 2025-03-31 - Bug fixes and quality of life improvements - Third party licenses updated ### 2.1.127 — 2024-06-18 - Blocking of ClexMobile users simplified - Various bug fixes and optimizations ### 2.1.120 — 2024-03-18 - Improved compatibility with MIC - Improved validation of date entries - Various optimizations and stability improvements ### 2.1.87 — 2023-10-09 Bug fixes and other optimizations ### 2.1.79 — 2023-08-20 - Stability and performance significantly increased - More reliable links for invitations and permissions ## Apps similar to Keyng | App | Rating | Price | Category | | --- | --- | --- | --- | | [Häfele My Dialock Manager](https://appshunter.io/ios/app/hafele-my-dialock-manager/id1510900982) | — | Free | Utilities | | [BURGsmart](https://appshunter.io/ios/app/burgsmart/id980848481) | 3.1 (9) | Free | Utilities | | [eLockApp](https://appshunter.io/ios/app/elockapp/id1562827087) | — | Free | Utilities | | [BALTECH Mobile ID](https://appshunter.io/ios/app/baltech-mobile-id/id1631352562) | — | Free | Utilities | | [Berner BlueSecur](https://appshunter.io/ios/app/berner-bluesecur/id1567212816) | — | Free | Utilities | | [LIONFlash](https://appshunter.io/ios/app/lionflash/id6463856356) | — | Free | Utilities | ## More apps by Uhlmann & Zacher GmbH - [Clex Key](https://appshunter.io/ios/app/clex-key/id1500405117) - [ClexFWProg](https://appshunter.io/ios/app/clexfwprog/id6470370699) All apps by Uhlmann & Zacher GmbH: https://appshunter.io/developer/1413776543 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-13.*