MykolaFedurko
The Homelander key mark beside a stack of rules marking a repeating automated pass
View source on GitHubB1Z0N/homelander

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Homelander

Immoscout24 apartment application app with end-user in mind.
  • Electron
  • React
  • Node.js
  • SQLite
Date
July 2026
Status
Prototype
Visibility
Public

Homelander is a desktop app that watches a property search on ImmobilienScout24 and auto-applies when a property becomes available.

The focus during development was a robust user experience and intuitive design, with powerful troubleshooting when something goes wrong.

Pasting a search URL, then the live feed, the history, and the settings behind them — recorded against the German interface.

Why it exists

ImmobilienScout24 is Germany’s largest real estate platform. In competitive markets — Berlin, Munich, Hamburg — apartments collect 100+ applications within hours. If you are not among the first to apply, you never hear back.

Manual refreshing does not work, because you cannot sit at a desk hitting F5 around the clock. Browser extensions are detectable and limited to what the browser can reach. Cloud bots cost around 100 € and take custody of your data.

Homelander runs on your own computer, drives a real Chromium browser, handles captchas, and pauses itself on session expiry and AWS perimeter challenges. Free, no terminal, no cloud.

What it does

A guided six-step wizard covers language, personal details, message template, manual account login, captcha key, and the first search. After that it runs unattended.

Homelander search tab
Searches run independently; the feed reports each application as it lands.

Captcha solving is optional and costs roughly $0.001 per solve through 2captcha — about $3 for hundreds of applications. Three speed modes govern the delay between applications, from 45 to 90 seconds. The interface ships in German and English.

Everything stays in SQLite on the machine. Nothing is sent anywhere except to the listing API, the listing site through Chromium, and the captcha solver.

The path a listing takes

text

IS24 Mobile API  <-- HTTP -->  [ Poller -> SQLite -> Apply Engine -> Chrome CDP ]  -->  IS24 Forms
                                    |                        |
                               Electron app               headed
                                (React UI)

The Electron app owns the poller and the store; the browser stays headed so the site sees what it expects.

From a search URL to a submitted application

The poller and the apply engine run independently; SQLite is the seam between them.

  1. 01Paste a search URL

    Any valid listing search, including Tauschwohnung.

  2. 02Poll the mobile API

    Every 10 minutes, checking for listings that have not been seen.

  3. 03Store in SQLite

    New listings land deduplicated and timestamped.

  4. 04Apply

    The engine opens each listing in a background Chromium window, fills the contact form, and submits.

  5. 05Solve captchas

    Handled automatically through 2captcha when a challenge appears.

  6. 06Record the outcome

    SENT or FAIL appears in the live feed and in history.

Screenshots

Homelander history tab
History keeps every submission, exportable as CSV.
Homelander settings tab
Persona, template, and timing are all editable after setup.