Free & open source v0.3.1

Your phone.
Your game.
Your stream.

Mirror mobile gameplay to your desktop. Capture, record and create with OBS. Connect over supported USB or local network routes.

View source on GitHub
No accountsLocal-firstOpen development
Illustrated live workflow
CastSprint · Mirror STREAM ACTIVE
ILLUSTRATED DEVICE VIEWMobile gameplay
FIT TO WINDOW
+
LIVE PREVIEW
Local connection Audio route Record
+
OBS OUTPUT
LIVE
↯ USBPhone connected
Wi-FiLocal network
StreamingDesktop → OBS
An illustrated animation showing a mobile device connecting to CastSprint and its desktop output flowing into OBS.
Latest releasev0.3.1
macOSDMGDownload
Windowsx64 ZIPDownload
Linuxx86_64Download
AndroidDebug APKDownload
iOSIn developmentComing soon
Responsive pipelineDesigned for creator workflows
Audio routingSupport varies by platform
Auto orientationPortrait and landscape
OBS workflowCompose on your desktop
Local-firstNo account required
A complete signal path

From mobile play
to desktop production.

CastSprint keeps the workflow legible: connect a supported device, view it on desktop, then compose the result in your recording or streaming setup.

See how it worksCheck compatibility →
01 · CONNECT

USB mirroring

A direct wired route for fixed creator setups. Availability and behavior depend on the device platform.

02 · DISCOVER

Local Wi-Fi

Connect on a trusted local network when the released platform workflow supports it.

03 · CREATE

Record and stream

Frame the desktop output for OBS, screenshots, tutorials, or recorded content.

Creator workflow

Play here.
Produce there.

Keep controls on the phone and production on the desktop. No invented latency promises—just a focused open-source signal path under active development.

Open the OBS guide →
MobileGameplay & apps
USB / LANDesktop source
OBSRecord & stream
Local connectionYour workflow stays on devices you control
Privacy focused

No account wall.
No made-up cloud story.

CastSprint is designed around direct device-to-desktop workflows. The website does not include advertising trackers or user accounts.

Play on your phoneUse supported local routesReview open-source code
Read the privacy policy →
Questions, answered

Know what is ready
before you connect.

Release assets are real, but a published build does not automatically mean every hardware workflow is fully validated.

Built in the open

Download the latest build.
Help shape what comes next.

View all downloadsExplore GitHub