Introducing
JSTU Connect
Unlock full capability by Multidevice Collaboration.
The private, local infrastructure beneath a workflow that spans your Mac, iPhone, iPad, Apple Vision Pro and Windows PC.
Quietly native,
on every screen.
Mac
The workspace itself: a live map of your devices, checks and compute, and touch received inside the app.
iPhone
Pairs, checks and shares status when you allow it, and becomes a touch surface for the Mac workspace.
iPad
Everything iPhone does, on a larger canvas, including touch for the Mac workspace.
Apple Vision Pro
Native windows in your space: a check in a window of its own, and pointer sharing you start deliberately.
Windows PC
A native Windows 11 app that pairs with your Apple devices using the same codes, runs checks and compute, and stops on request.
A research question, answered in software.
JSTU Connect began as an extended research project into the future of Multidevice Collaboration. Its premise is simple: most of us already carry more capability than we ever combine. A phone, a tablet, a computer and now a headset, each remarkable, each largely alone.
What holds them apart is seldom the hardware. It is trust that cannot be seen, connections that cannot be relied upon, and ecosystems that end at a brand’s edge. JSTU Connect is the infrastructure that followed, built to be used on both sides of that edge.
After Future Multidevice Collaboration Workflows: Technical Challenges, User Experience, and Feasibility, Jiahuan He, 2026.
Four findings.
Four answers.
Consent you can see.
Direct pairing needs acceptance and the same code confirmed on both screens. Permission is granted device by device, every session is visible, and either side may end it.
Connections, measured.
JSTU Connect measures real response time to each paired device and prepares standby paths across Wi-Fi, Ethernet and USB. When an interface disappears, an active check moves to one that still works.
Capacity, in plain view.
Processor, memory, power, thermal state and network, observed locally and shared with a paired device only when you allow it, so you can see which device is plugged in and has headroom.
Native, and yours to tune.
Built from each platform’s own controls, on Apple devices and on Windows. Discovery, Bluetooth, status sharing, sensors and Mesh each have their own switch, so the app listens only when asked.
Continuity, by design.
A path is chosen on evidence, not assumption. While one connection carries the work, another waits, prepared.
Mesh Experimental
Trust that travels, only as far as you allow.
Turn Mesh on, and the devices you already trust can help the rest of your constellation meet, see and reach one another. On Mac, iPhone, iPad and Apple Vision Pro.
Introductions
A device you both trust makes the introduction. One tap connects; the other device is told and can disconnect or forget. No permission comes with it.
Shared through
Status signed where it was measured travels on through trusted devices, only when its owner allows it. No device along the way can change it.
Adapter
A device with Adapter on relays connection checks and touch for the others. Sessions stay encrypted end to end, so it forwards what it cannot read.
- Off by default
- Mesh stays off until you turn it on, and Adapter starts off every time the app opens.
- Nothing inherited
- An introduced device receives no permissions. A device you forget is not introduced again without you.
- Bluetooth, where it fits
- On Mac, iPhone and iPad, trusted devices can exchange permitted status over an authenticated Bluetooth channel.
- One Stop
- Stop All ends every relayed session and turns Adapter off.
What it does, today.
- Nearby discovery
- Wi-Fi and wired networks, optional Bluetooth, and a direct address when discovery is not enough.
- Mutual pairing
- Acceptance, a compared code and confirmation on both devices. Trust stays in each device’s protected storage.
- Per-device grants
- Each device may do only what you allow. Revoke access or forget a device at any moment.
- Connection checks
- Measured response time and variation, preferred connections, and up to three prepared standby paths.
- Device status
- Local readings, optionally shared with a paired device. Off until you choose otherwise.
- Touch and pointer
- iPhone and iPad guide the pointer inside the Mac workspace; Apple Vision Pro sends and receives within the app.
- Visible activity
- Every incoming and outgoing session is listed, with Stop always within reach on both sides.
- Bounded compute
- A fixed, verifiable workload shows what a paired device can execute. No code, no personal content.
No account. No cloud. No telemetry.
Everything happens between devices you trust, on networks you choose. JSTU Connect works offline and sends nothing to a server.
TestFlight Beta builds are the one exception: after you choose Continue, they send diagnostics to Apple CloudKit, deleted within 30 days. Beta Privacy Notes
An early release.
Everything on this page works today, in JSTU Connect 0.6.1 for Mac, iPhone, iPad and Apple Vision Pro and in the Windows app. It is not yet a production-ready application: long sessions, every network and every combination of devices are still being tested, and Mesh is an experiment you turn on yourself. A TestFlight Beta for Apple devices is open by application; wider availability will be announced on this page.
Apply for the TestFlight Beta- Platforms
- Mac, iPhone, iPad, Apple Vision Pro and Windows PC
- Built with
- Apple’s 27 SDKs and WinUI 3, entirely native
- Works with
- Two or more of your own devices
- Mesh
- Experimental and off by default, on Apple devices
- Languages
English Chinese macOS Available Available iOS and iPadOS Available Available visionOS Available Available Windows Available Not available - Account
- None required
- Help
- Support · Privacy Policy
