Privacy Policy

Last updated: October 2026

The short version

Your chats and your memory are saved on your Mac, not on our servers. To answer you, Synapsis sends only what each request needs (your message, a screenshot when you ask about your screen, or your voice) to the services that generate the response. Our servers pass that along and keep no copy of it.

What stays on your Mac

Your conversation history, your memory (the things Synapsis has learned about you), files you've added, and your settings are stored in your Mac's Application Support folder.

• Signed in: your chats and memory are kept separately for each account on your Mac, and are hidden when you sign out.
• Guest (not signed in): your conversation is not saved at all. It disappears when you start a new chat, sign in, or quit the app.
• Screenshots: to support follow-up questions, Synapsis keeps a few recent screenshots (up to 8 per conversation) on your Mac. They're deleted when you delete that conversation.
• Accounts on this Mac: Synapsis remembers which accounts have signed in on your Mac (name, email and profile picture) so it can offer a quick "Welcome back" sign-in. You can remove an account from this list at any time.

None of this is uploaded to us. If you uninstall Synapsis or delete this data, it's gone. We don't hold a backup.

What gets sent to other services, and why

To answer a request, Synapsis sends only what that request needs to the service that handles it:

• Your messages are sent to our AI model provider (Google Gemini) to generate a reply.
• Screenshots are sent to the same provider only when you ask Synapsis about your screen.
• Files you add to a chat are sent to the same provider when you ask about them.
• Your voice: when you talk to Synapsis, your audio is sent to Deepgram to turn it into text, and spoken replies are created by Deepgram (or Lemonfox as a backup). Dictation, where your words are typed into the message box, uses Apple's speech recognition on your Mac and is not sent to us.
• Web searches: when an answer needs current information, search queries are sent to Serper (which uses Google Search), and Synapsis may read the public web pages it finds.
• Sign-in: if you sign in, Google or Apple confirms who you are.
• Payments are handled by Lemon Squeezy (see below).

These requests pass through our servers, which run on Google Cloud (Firebase) in the United States. Our servers don't store the content of your messages, screenshots, voice or files. Each provider processes data under its own privacy terms.

Accounts

You can use Synapsis as a guest, or sign in with your Google or Apple account. We don't offer email and password sign-in.

As a guest, Synapsis creates a random, anonymous identifier for your installation. We use it, together with your IP address, only to apply daily usage limits fairly and to prevent abuse.

When you sign in, we store your account identifier, the name, email address and profile picture provided by Google or Apple (Apple may give us a private relay address instead of your real email), your plan, and your daily usage totals. We don't store your conversations.

You can delete your account at any time from inside the app. This deletes your account and usage data from our servers, and you can choose to also delete your chats and memory from your Mac.

Usage statistics

To understand how Synapsis is used and make it better, our servers count anonymous statistics: which features are used (for example typing or voice, web search, questions about your screen, files) and a general topic category for requests (for example "writing" or "coding"). These are added up into daily totals that are not linked to you and never include the words of your messages.

Feedback you choose to share

If you rate an answer and choose to share the conversation with us, we receive the text of that conversation (never screenshots) and any comment you add. We use it only to improve Synapsis and keep it for up to 12 months. You can ask us to delete it at any time.

Payments

Paid plans are processed by Lemon Squeezy, our payment processor and merchant of record. We never see or store your card details. Lemon Squeezy tells us your plan, subscription status and renewal date, and gives you a page where you can manage or cancel your subscription.

What we don't do

• We don't sell your data.
• We don't use your conversations to train AI models.
• We don't use advertising or third-party tracking tools. The only statistics we keep are the anonymous totals described above.
• Our servers don't log your messages, screenshots, voice audio, files or search queries. They keep only technical information, such as errors, timing and usage totals.
• We don't share your data with advertisers.

How long we keep data

• Account and usage data: while your account exists. It's deleted when you delete your account.
• Technical logs: up to 30 days.
• Feedback you shared: up to 12 months, or sooner if you ask.
• Usage statistics: kept as anonymous totals.

Children's privacy

Synapsis is not directed at children and is not intended for anyone under 13. We don't knowingly collect information from children under 13.

Changes to this policy

If this policy changes in a way that matters, we'll update this page and the date at the top. Continued use of Synapsis after a change means you accept the update.

Contact

Questions about privacy, or requests about your data, can be sent to support@hellosynapsis.com.