Do I really not need a USB drive to install themes?

Correct. Once your head unit is paired with your Saint Studios account (a one-time 6-digit code), themes you buy or build are pushed over WiFi automatically. Saint Launcher polls every 30 seconds for new pushes and downloads them in the background.

How does Cloud Push work technically?

When a purchase or push is queued, the server creates an envelope-encrypted package keyed to the buyer's license and device ID. Saint Launcher polls the API, downloads the package, validates the signature, decrypts the envelope, and renders the theme. The buyer never sees a file.

What happens if my car is offline when a theme is pushed?

Pending pushes are stored on the server for 24 hours. The next time your head unit connects to WiFi, Saint Launcher picks them up and installs them. If you miss the 24h window, the theme stays in your purchase history and you can re-trigger the push.

Is Cloud Push a Pro feature?

Cloud Push for marketplace purchases is available to all paired buyers (Pro is not required). Pro adds live push from the builder during design — you can iterate on a theme and see each change appear on the car in seconds.

No USB Required

Push themes to your car over WiFi

No USB drives. No manual imports. No folder hunting.

Pair your Android head unit once. From then on, every theme you buy or build arrives automatically. Cloud Push handles the rest while Saint Launcher renders the result.

GET SAINT LAUNCHER

The old way is exhausting

Most car-launcher theme systems make you manually move files between your computer, a USB drive, and the head unit. Every. Single. Time.

THE OLD WAY (every theme)

Download the theme to your computer
Copy the file onto a USB drive
Walk out to the car
Plug USB into the head unit
Open the launcher's import menu
Hunt for the file in folder browser
Activate via license code
Hope it loads correctly. Repeat for every edit.

THE SAINT WAY (one-time setup)

Install Saint Launcher on your head unit
Pair with your Saint Studios account using a 6-digit code
That's it. Forever.

From now on, every theme you buy or build is pushed automatically. Your car checks for new pushes every 30 seconds when it's awake and connected to WiFi.

How Cloud Push works

Behind the scenes, every push is encrypted, signed, and bound to your specific device.

THEME IS PURCHASED OR PUSHED

A buyer completes a Stripe checkout, or you hit Push from the builder. The website creates a CloudPush row tied to your user ID, theme ID, and device ID.

SERVER WRAPS THE FILE

The .saint file is wrapped in a per-buyer envelope using HKDF-SHA256 (license_key + device_id). This means the wrapped file only works on the buyer's specific paired car.

LAUNCHER POLLS AND DOWNLOADS

Saint Launcher polls /api/cloud-push/check every 30 seconds when WiFi is available. When a push exists, it downloads the wrapped bytes over HTTPS.

LAUNCHER DECRYPTS AND VALIDATES

The launcher unwraps the envelope, verifies the HMAC signature, and decrypts each page (per-page AES-256-GCM with a master key compiled into the APK).

THEME RENDERS ON SCREEN

The launcher applies the theme. The buyer confirms via /api/cloud-push/{id}/confirm, and the server cleans up the file. No copies left behind.

What you need

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ANDROID 10 OR HIGHER HEAD UNIT

Most aftermarket Chinese head units from 2020 onward.
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SAINT LAUNCHER INSTALLED

Free APK download from the /download page. Set as default launcher on your unit.
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ACTIVE WIFI CONNECTION

Hotspot from your phone, home WiFi when parked, or a head unit with cellular. Polling pauses when offline and resumes automatically.
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ONE-TIME PAIRING

Generate a 6-digit code from your Saint Studios account, enter it on the head unit. Pairing grants a free 14-day Pro trial.
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(OPTIONAL) PRO FOR LIVE PUSH FROM BUILDER

$9.99/mo or $79.99/yr. Adds in-builder push, live preview, screenshot pull.