The app, close at hand
Your coop, in your pocket.
Signal or no signal.
How to add 4Kurki to your phone or desktop — and why backups matter.
Coops are not famous for good reception, and eggs need writing down where you collect them. So 4Kurki can be installed: the app gets its own icon, opens without a browser bar and works offline. No app store, no account.
Add it from the app screen. Open 4kurki.pl/app first and add to the Home Screen from there. Add this page of instructions instead, and instructions are what lands on your phone.
iPhone and iPad
Since iOS 16.4 the Home Screen is no longer Safari-only — Chrome, Firefox, Edge and DuckDuckGo can add the app too. The route is the same everywhere: the share button, a square with an arrow pointing up.
Safari
- Open 4kurki.pl/app/ in Safari.
- Tap the share button in the bottom bar.
- Scroll down the list, past the app icons and past “Copy”. Choose “Add to Home Screen”.
- Leave the “Open as web app” toggle on. Off, it makes a plain browser shortcut.
- Tap “Add” in the top right corner.
Chrome, Firefox, Edge, DuckDuckGo and others
- Open 4kurki.pl/app/ in them.
- Tap the share button. In Chrome it sits at the right of the address bar — the ⋮ menu does not hold it, however long that list looks. Other browsers do keep it in the menu.
- Scroll down and choose “Add to Home Screen”.
- Switch on “Open as web app”. Adding from Chrome it often comes up off, and off means a plain shortcut rather than an app. Then confirm with “Add”.
Do not pick “Send to Your Devices”. It sits higher up, sounds similar and sends the tab to another phone — it asks you to sign in and installs nothing. “Add to Home Screen” is further down.
Your entries do not travel with it. On iPhone a Home Screen app keeps its own storage, separate from the browser, so it opens empty even if the browser already holds your flocks and eggs. Anything already entered there: Settings → Export in the browser, then Settings → Import in the freshly installed app.
Still cannot see that entry? Adding from browsers other than Safari works from iOS 16.4 onwards — on an older system use Safari, where it always works.
Android
Chrome is the surest route. Other browsers will add an icon as well, sometimes as a plain shortcut to the page rather than a separate app.
Chrome
- Open 4kurki.pl/app/ in Chrome.
- Tap the ⋮ menu in the top right corner.
- Choose “Install app” or “Add to Home screen” — the wording depends on your version.
- Confirm. The icon appears alongside your other apps.
Samsung Internet
- Look for the install icon in the address bar — it often shows up as soon as the page opens.
- If it is not there, open the menu and choose adding the page to your home screen.
- Confirm the name and accept.
Firefox, Edge, Opera, Brave
- Open the browser menu.
- Choose “Install” or “Add to Home screen”.
- Confirm.
Sometimes the browser offers the install itself, as a bar at the bottom of the screen — then one tap is enough.
Desktop
On a desktop the app opens in its own window, without browser bars, and joins your list of programs.
Chrome and Edge — Windows, macOS, Linux
- Open 4kurki.pl/app/.
- Look for the install icon in the address bar (a monitor with an arrow). If you cannot see it, open the browser menu and choose “Install”.
- Confirm. The app opens in its own window and joins your programs.
Safari on a Mac
- Open the page in Safari — macOS Sonoma or newer is needed.
- From the File menu choose “Add to Dock”.
- Confirm the name. The app lands in your Dock.
Desktop Firefox does not install web apps — you get a plain bookmark. If you want a separate window, use Chrome, Edge or Safari.
What changes
- It works offline. After the first run the files stay on your device, so you can record a collection with no signal at all.
- It opens like a normal app — an icon, full screen, no address bar.
- It has shortcuts. Hold the icon to jump straight into the daily log or adding eggs.
- Your data stays with you. Nothing goes to a server, because there is no account.
Make backups — this one really matters
Because nothing is ever sent anywhere, nobody can restore it for you. Your flock records live in this one device’s browser storage. Clearing browser data, changing phones or reinstalling the system will remove them.
That is why the app has an export: Settings → Export saves everything into a single JSON file. Keep it where you keep things that matter — cloud, drive, or an email to yourself.
Moving to a new phone: install the app and choose Settings → Import. There is also an “Undo import” button if something goes wrong. What exactly stays on your device is described on the Data and privacy page.
A good habit: one backup a month, when you look at your summary.
Always the same address
Browsers tie saved data to one exact address. The app opened from a different address will show an empty database — nothing is lost, it is simply a separate drawer. So always go through www.4kurki.pl/app/, and after installing, just use the icon.
Short answers
Does it take much space? A few megabytes, less than one phone photo.
Do I need an account? No. There is no sign-in.
Does it cost anything? No.
Will I find it on Google Play or the App Store? No, and it does not need to be there. 4Kurki is a website your browser can keep as an app — so there are no permissions, no fees and no updates to download.
Can I uninstall it? Yes, like any app. Export your JSON backup first.
More questions about hens and about the app itself are gathered in the questions and answers.
Button names vary between browser and system versions. If yours differs, look for the words “install”, “add” or “home screen”.
The app is yours
Install once, use it for good
No fee, no account, no entry limit and no “full version” to buy later. The app is simply there to help you with your coop. If it does, you can say thank you with a coffee.