instApped

New app

Work through the steps, check your setup, then build.

Where does your app come from?

Upload files or point to a live website.

Tap to upload your appHTML, HTM or ZIP

App details

How your app appears on a phone and in the store.

App name

Package ID Orientation Version name Version code

Android back buttonGo back in the app before closing it

Pinch to zoomLet people zoom the page

FullscreenHide the status and navigation bars

Open external linksSend links to other websites to the browser. Off: they open inside the app.

Keep these websites inside the appOptional. Your app's own website always stays inside the app; list any other domains that should too (sign-in, payments, a second site).

Pull to refreshSwipe down at the top of a page to reload it

Keep screen onStop the screen from sleeping while the app is open

Permissions

Only turn on what your pages actually use. Each one is listed on Google Play, and Android still asks the person first.

CameraVideo calls, QR scanners and photo capture in the page

MicrophoneVoice notes, calls and audio recording

LocationMaps and "near me" features using the device location

App tag for your server (optional)Added to the browser user agent so your website can tell when it's opened in the app.

Launcher icon

PNG, JPG or WebP, 1024×1024 recommended. Android sizes (mdpi to xxxhdpi, plus round) are generated at build time.

Tap to upload your iconNo icon yet

Splash screen

What people see while the app opens. With no splash art, the app shows its icon like any normal Android app.

Splash background Show for at least App colourStatus bar and offline screen.

Offline and caching

Choose how the app behaves without a connection.

Offline storageKeep downloaded files after the app restarts

Update when onlineRefresh content when a connection is available

Cache mode

instApped SDK for developers

Your HTML can save files and ZIP bundles to private storage that works offline.

CastelApp.downloadData(url, key, callback) CastelApp.downloadBundle(url, key, sha256, callback) CastelApp.bundleUrl(key, path) CastelApp.share(title, text, url) // native share sheet; navigator.share also works CastelApp.openExternal(url) // open a link in the browser CastelApp.isOnline() // true or false JSON.parse(CastelApp.appInfo()) // packageName, versionName, versionCode

Preview

See your app in a phone frame.

9:41

Add a source to see a preview.

Pre-build check

We look for problems before you spend a build. Results update as you edit.

Run the check to see results.

Build

Creates an APK for testing and an AAB for Google Play.

Sign the release AABRequired for Google Play uploads

Projects

Your drafts and past builds, saved on this device.

Settings

Preferences for this factory.

Appearance

Theme

Create screen layout

Defaults and connection

Used when you create a new app.

Package ID prefix Build service URL

Use the hosted build bridge URL. Leave the default unless your administrator provides another endpoint.

Raise version code after each buildGoogle Play rejects an update that reuses a version code

Advertising

The banner at the top is set by an injector (see the guide at the top of this file). Paste ad JSON here to preview it on this device only.

Preview override (JSON)

Active source: none

Backup

Move your projects to another device.

Import