Comparison

EVVA AirKey vs ZHS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EVVA AirKey

This app transforms your smartphone into a digital key, allowing you to securely send and manage access to properties and company doors. It offers features like geo-tagging for navigation and multi-administration for managing multiple sites and users.

Highlights
  • Smartphone as a key
  • Secure key sharing
  • Online access management
  • Geo-tagging for navigation
  • Multi-site administration
  • Office mode automation
  • REST API integration
Features
Read full description

Do you have a holiday apartment and handing over the keys constantly annoys you? Do you no longer have an overview in your company of how many keys are in circulation? Do you feel unsafe because of lost keys? Then it's time for AirKey. With AirKey the smartphone is the key. You can safely send new keys to other smartphones and manage your access control system online. But what do you need? An AirKey locking component, a smartphone and an internet connection. And if you don't want to use a smartphone, there are alternative access media too, such as cards or key tags. Uncompromising security! The communication between smartphone and locking component is end-to-end encrypted, making it completely secure against interception. The app is secured with an additional PIN. The key tags also have state-of-the-art technology and they cannot be copied. Other features Send a key: Never hand over a key again. It's very easy to send keys to people, such as employees, freelancers or guests. You can also pre-programme this for particular times. https://youtu.be/2lJOMMhiyRY Geo-tagging: Get there quick. The smartphone knows where the locking components are and shows the way in the navigation app. Component sharing: Easily hand locking components over to other AirKey users, for example, in a shared office, for them to manage themselves and reduce expenses for key management. Multi-administration: Separately, quickly and simply manage multi-site companies with several administrators and always know who has been granted which authorisation. Office Mode: Full or semi-automatic office mode on certain doors. Automatically takes into account public holidays as well as summer and winter time. Other practical features for businesses: Import personal data with the click of a button and export system data, assign maintenance authorisations to smartphones, REST API to control certain AirKey functions via your own software. AirKey meets the EU General Data Protection Regulations: Together with a data protection expert, AirKey was developed into the access control system with the best data protection in order to manage our customers' data in accordance with the law. The administrator can also turn off event logging of personal data in the online administration. For a list of all tested, compatible smartphones visit: https://www.evva.com/de/airkey/compatible-smartphones/

About

ZHS

Read full description

Als Kunde der ZHS Office- & Facilitymanagement GmbH profitieren Sie von einem besonders innovativen Kundenservice, der Ihnen viele Freiheiten bietet. Mit der ZHS App können Sie uns rund um die Uhr Anliegen und Schäden inklusive Fotodokumentation per Smartphone melden. Zusätzlich stellen wir Ihnen eine digitale Dokumentenmappe mit wichtigen Dokumenten für Ihre Immobilie zur Verfügung. Über das digitale schwarze Brett informieren wir via Push-Nachricht proaktiv über wichtige Informationen rund um das uns anvertraute Objekt. Ihre Vorteile der ZHS App auf einen Blick: - Innovativ: Ihre Mobilität und Zeitersparnis stehen im Fokus. In der ZHS App gehen keine Informationen verloren und Sie finden alles Wichtige zu Ihrer Immobilie in der App gebündelt. - Fachlich kompetent: Sie haben Fragen zum Mietvertrag, zur Nachbestellung von Schlüsseln oder zur Eigentümerversammlung? In der ZHS App finden Sie einen umfassenden Fragen- und Antwortenbereich zu häufig gestellten Fragen. - Interaktiv: Effizienz gehört zu unserem Tagesgeschäft. Ihre Schadensmeldungen und sonstige Anliegen werden rasch bearbeitet und Sie erhalten regelmäßig per Push-Nachricht ein Status-Update. - Transparent: Dokumentation ist für uns die “halbe Miete”. Mit der ZHS App erhalten Sie alle wichtigen Informationen zu Ihrer Liegenschaft direkt am schwarzen Brett und können diese kommentieren. So registrieren Sie sich für die ZHS App: - Sie erhalten von uns eine personalisierte E-Mail mit einer persönlichen Einladung zum Beitritt der ZHS App - Drücken Sie auf den Button “Anmeldung bestätigen” und geben Sie Ihr persönlich gewähltes Passwort ein - Laden Sie sich die ZHS App für Ihre Smartphone herunter - Und schon können Sie alle Vorteile unseres digitalen Kundenservices nutzen! - Sie haben noch keine Einladung von uns erhalten? Dann melden Sie sich bitte bei Ihrem zuständigen Immobilienverwalter.

Screenshots

EVVA AirKey4 screens
ZHS4 screens

Verdict

The call

EVVA AirKey and ZHS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

EVVA AirKey ships an update every 4 months, ZHS every 2 months. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

ScorecardNo meaningful differences
EVVA AirKey versus ZHS: the parameters behind the verdict, then further details
ParameterEVVA AirKeyZHS
PriceFreeFree
Rating3.0 (6 ratings) — better—
Positive reviews36.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.0 — better15.6
Further details — not scored
Size13 MB30 MB
Age rating4+4+
DeveloperEVVA Sicherheitstechnologie GmbHIdwell GmbH

In-app purchases

None

EVVA AirKey

No in-app purchases

None

ZHS

No in-app purchases

Questions

Is EVVA AirKey free?
EVVA AirKey is free to download, with no in-app purchases.
Is ZHS free?
ZHS is free to download, with no in-app purchases.
Do EVVA AirKey or ZHS have ads?
Neither EVVA AirKey nor ZHS shows ads.
Which is updated more often, EVVA AirKey or ZHS?
EVVA AirKey ships an update every 4 months, and ZHS every 2 months. Most recently, EVVA AirKey was updated on October 22, 2026 and ZHS on October 16, 2026.

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