2N Installer App
1 | ABOUT THE PROJECT
2N is a global leader in IP intercoms and smart access control systems. Their products are installed in buildings all over the world. Alongside their top-tier hardware, they needed a mobile app for installation technicians – one that would support correct installation and servicing of the devices out in the field.
2 | CHALLENGE
Installers and service technicians spend their days on building sites and in half-finished buildings. When they hit a specific technical problem on site, paging through hundreds of pages of PDF manuals or digging through a web FAQ is the last thing they want to do. Time on site is money, and a technician up a ladder needs the exact answer straight away.
The goal was to build the 2N Installer App – a digital sidekick in your pocket that:
Gives instant access to the complete library of manuals and installation procedures.
Integrates Lennie, a smart AI assistant that searches the entire documentation in a flash and answers a technician’s specific problem in seconds.
Speeds up the installation itself, takes the load off 2N’s overstretched internal technical support, and builds a strong technological advantage.
Our main motivation for building the app was that, as 2N, we wanted to give our technical partners the easiest possible access to information – and with it, raise the reliability of the solutions we install.
3 | RESEARCH
So we wouldn’t be working from guesswork, 2N’s product manager gave us valuable data from interviews, user observations and field research with the technicians themselves. In parallel, we ran an in-depth competitor analysis.
INPUTS
01
Data from 2N’s product manager
02
Interviews and user observations
03
Field research with technicians
04
In-depth competitor analysis
KEY INSIGHT
1-2×
per year is how often a typical installer fits one, so the steps never become second nature
The research showed that access to information mattered most to installers who only fit a unit once or twice a year, because the steps never become second nature. Easier access to that information – offline included – gives them the confidence and the motivation to install and recommend 2N products more often.
4 | SOLUTION
We designed the complete UX/UI and then handled both the mobile and backend development for iOS and Android. The whole solution rests on two pillars: a single codebase for both platforms, and an AI assistant built on top of 2N’s technical documentation.
01
Development on one wavelength
We chose Compose Multiplatform for the mobile build. We started with Android, which let us reuse as much of the finished code as possible and speed up the iOS version considerably. Because iOS uses its own custom design and doesn’t rely on specific native components, we could share not just the logic but the UI as well – and the experience stayed consistent on both platforms.
02
An AI assistant on 2N’s data
Implementing AI on top of 2N’s data brought two fundamental challenges.
1. Answers without hallucinations
Feeding the AI thousands of pages of manuals so that it answers precisely and in a structured way meant meticulous data preparation on the backend. We converted the texts into vector embeddings – the assistant searches specific passages and attaches the source.
2. Context under control
A topic guard runs on top of the same vector layer. We used it to software-lock the chatbot so it can’t be lured into topics outside technical support for 2N products.
Shared across platforms
UI
Compose Multiplatform
Logic
Kotlin
Android
iOS
iOS has its own custom design, so it needed no native components – the UI could be shared too, not just the logic.
2N Lennie
What cable do I need between the intercom and the door lock?
That depends on the lock type and whether it's powered from the intercom. Here's the wiring diagram for your model:
2N IP Verso – Installation
The assistant doesn't guess the parameter – it points to the exact place in the documentation.
5 | UNDER THE HOOD
A technician on site often has a weak connection, or none at all. Two decisions shaped the backend and the app's content around that. The result is one app that works on site even without a signal – and an assistant that only answers what it actually understands.
BACKEND
Smart manual downloads
Manuals are bundled into ZIPs by category. On update, only the files that actually changed get downloaded.
CONTENT
Taming the WebView
The existing web manuals run directly inside the app. Responsive, with working cross-links, and available offline.
6 | RESULT
The first version went straight into the hands of selected technicians for real testing in the field. We tuned the details directly from their feedback on site, where the loudest need was a faster route to the right section of the right manual – exactly what the AI assistant Lennie solves. It points users to the right information quickly, with no drawn-out searching or scrolling. Today the app is fully rolled out and available on the App Store and Google Play.
Relief for 2N's technical support
Every trivial question the chatbot answers in a second is time saved for 2N's in-house specialists. They can now focus on solving complex, non-standard technical challenges.
The app has only been public for a short time, so it is too early to draw conclusions. Even so, technical support has already seen a slight drop in repeated questions. The real impact of the app and the AI assistant will only be measurable over a longer period.
We showed that bringing AI into a mobile app does not have to be empty technology hype – it can create real value for people in work overalls and for specialist integrators, genuinely easing their daily work and their prep before an installation.