Kulku vs One4all Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kulku
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KULKU is the resident app for buildings equipped with the KULKU system. Open doors, answer video door calls, book shared facilities and receive information all in one app. VIDEO DOOR CALLS When a visitor calls you from the door, you see live video and can talk with them wherever you are. The door opens with a single tap, straight from the call. DOOR ACCESS Open the doors of your building with your phone. Your favourite doors stay at the top, always within reach. SHARING ACCESS Share access with a guest in seconds, whether it is a friend, babysitter or a repair person. See everything you have shared in one place and remove it whenever you like. BOOKINGS Book the sauna, laundry room and other shared spaces directly in the app. Your upcoming bookings are also shown on the home view. Information channel Your building's information channel in one place, with a notification whenever something new is published. KULKU is available in Finnish, Swedish and English. The app is intended for residents and users of properties where the KULKU system is installed. The available features vary depending on what has been enabled in your property. Signing in requires your personal KULKU credentials.
One4all Mobile
This app facilitates real-time communication, bookings, and payments for housing services and facility management. It provides access control and content tailored to the specific service package ordered by the housing company or property.
- Real-time communication
- Bookings for facilities
- Payments for services
- Access control
- Customizable content
- Web browser access
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The application enables: - real-time communication - bookings and payments for common facilities and housing services - access control The content varies depending on the service package ordered by the housing company or the property. The application also works on a web browser at mobile.o4a.fi Use and login: Logging into the application is only possible for people whose housing company, real estate or other entity has acquired the service for their use. The housing company or real estate creates access rights to the system, after which the user receives a link in their email for the first login. Please make sure that the housing company or property has the correct email address. Service content: The housing company or real estate is responsible for the contents of the application (e.g. texts, images, messages, calendars) and provides additional information regarding for example login, bookings and locking systems. If necessary, reach out to the contact information provided in the application. In matters related to the application's technical problems, please contact support@one4all.fi
Screenshots
Verdict
The clearest difference is update cadence: One4all Mobile at every 3 weeks against Kulku's every 6 months. One4all Mobile also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Kulku ships an update every 6 months, One4all Mobile every 3 weeks. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.
| Parameter | Kulku | One4all Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (6 ratings) — better |
| Number of ratings | — | 6 — better |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Kulkutech Oy | One4all Finland Oy |
In-app purchases
Kulku
No in-app purchases
One4all Mobile
No in-app purchases









