● v.latest · macOS 12.3+ GitHub →
You run several AI tools every day. Sinain makes them work as one.

Looks like you’re working on…

Sinain can notice tasks such as a job search, thesis research, trip planning, or fixing a bug.

Work the way you already do — across ChatGPT, Claude, Cursor, and the rest. A few minutes into a task, Sinain quietly notices the goal and asks if you want help moving it forward. Say yes, and Sinain brings in the right AI, already briefed with the context it needs. Nothing is saved or shared until you choose it.

⬇ Download for macOS → Register and join Pro waitlist
Flow demo
assets/sinain-context-merge-24s.gif
served from sinain.com CDN
One task, several AI tools, one coordinated flow
§ 01 — How it works

Stay in the loop without staying in every thread.

Sinain recognizes a task as your work takes shape. When something important changes, point it out to update the context and steer the agents. Sinain follows their progress while your attention is elsewhere, then brings you back when a decision needs you.

Looks like: checkout webhooks ✕
12 min in Terminal Browser
GOAL · AS READ
Unblock checkout before launch
NEXT STEPS
· Check the v3 signature header
· Run the regression test
Track Call Sinain credited from 11:02
Step 01 · It notices

Sinain recognizes the task

After a few focused minutes, Sinain names the thread and shows the goal and likely next steps. Confirm it with one tap, correct it, or ignore it and let the card fade.

228 × 92
Context from Screen
Step 02 · Steer the work

Show Sinain what matters

Point to the checkout error or any new detail that changes the task. Sinain adds it to the ongoing context and updates the agents, so they continue in the right direction.

launch deck · working
or
2 / 3
checkout · testing
Step 03 · Work moves forward

See progress while you switch

Move to another task while your agents keep going. Sinain keeps each thread separate and shows what changed, what finished, and where an agent is waiting for you.

Back to checkout webhooks? Test still failing · agent waiting.
Type a message
Re-entry brief
Ggoal + last decision
Nblocker + next step
Step 04 · You rejoin

Come back at the decision point

When you return, Sinain restores the goal, last decision, current blocker, and next step in one glance. Resume with the agent already briefed — no status meeting with your own tools.

§ 02 — Privacy

You decide what Sinain remembers.

Sinain keeps recent activity temporary until you choose to save or share it. It can hide passwords and other sensitive details before using online AI, and you can also run it fully offline.

Nothing saved by default

Recent activity disappears unless you choose to remember it.

Sensitive details hidden

Passwords, keys, and payment details can be removed before online AI sees anything.

Offline when you need it

Keep processing on your Mac when work should not leave your computer.

§ 03 — Get started

Download the app. It sets itself up.

Download Sinain, follow the short setup guide, and choose which AI tools to connect. A quick tour shows you how to ask for help from anything on your screen.

Sinain.dmg
signed & notarized · Apple Silicon
⬇ Download
First-run wizard
privacy choice AI connection permissions
Onboarding tour — the four gestures
Save Context Call AI From Screen From Clipboard

  1. Download & open

    Grab the signed DMG and drag Sinain to Applications. No Node, no Python — the app carries everything it needs.

  2. Follow the setup guide

    Choose your privacy preference and allow screen and microphone access when macOS asks.

  3. Start working as usual

    Open a task and keep going. After a few focused minutes, Sinain notices what you’re working on and quietly offers to help.

Ready?

Stop carrying context between your AI tools.

Install Sinain once. Pick up where you left off in any AI you use.

⬇ Download for macOS Star on GitHub →