Spike is a desktop companion. This policy explains what the Windows app (and the Spike phone app and robot when you pair them) does with your information. The short version: his brain runs on your own computer, the words of your conversation go to Google's Gemini so he can think and speak, and nothing else leaves your devices, apart from two small things in the Android app that are named under "Your phone and the robot". There is no account, no advertising and no tracking.
What stays on your computer
- What Spike remembers about you (facts you tell him), your alarms and reminders, your faces from the Face Studio, your settings, the recent conversation he needs to keep talking, and a diagnostic log (which can include what was said) that stays on your computer. These are stored in your Windows user folder and are removed when you uninstall the app.
- Your Gemini API key, encrypted with Windows' data protection for your user account. It is never written to a file in plain text and never logged.
- Speech recognition: when the microphone is on, your voice is turned into text on your computer. Audio is not recorded, stored or sent anywhere. You can switch the microphone off in Settings and only type.
- Pictures from the Spike robot's camera are shown live and never saved.
What is sent to Google
Spike uses Google's Gemini API with your own API key. To answer you, the app sends Google the words of your conversation with some context (his personality, relevant things he remembers about you, the time). To speak with a natural voice, it sends the text of his reply to Gemini's speech service. After a chat he may send the conversation once more to pick out facts worth remembering. Google processes this under the Gemini API Terms and Google's Privacy Policy; on the free tier Google may use the data to improve its products. SpaceZ does not receive or see any of it.
If you tell Spike something that sounds like you are in danger or thinking of hurting yourself, that message is answered on your computer with help-line information and is not sent to Google.
Your phone and the robot
When you pair the Spike phone app or robot, they talk to the brain on your computer over your home network, protected by a pairing code. If you choose to use Tailscale to reach him away from home, that connection runs through your own Tailscale account under Tailscale's privacy policy.
The Android app has a scanner for the pairing code. It uses Google's ML Kit, which runs on your phone. Google says ML Kit may send it anonymous performance and usage information about the scanner, such as how fast it worked. No pictures and no codes are sent. Google explains this in its ML Kit data disclosure.
The Android app can also add an optional offline voice, so Spike can still talk when his brain is out of reach. It is downloaded only if you tap to add it. The files come straight from the open-source sherpa-onnx project on GitHub and from the model pages of the Kokoro voice, not from SpaceZ. Nothing about you is sent with the download.
What we collect
Nothing, apart from the scanner information described above, which goes from Google's code on your phone to Google, not to SpaceZ. SpaceZ runs no servers for this app, collects no analytics, crash reports, identifiers or usage data, and shows no ads. Microsoft may collect data about the installation under its own privacy statement.
The robot waitlist. If you choose to join the Spike robot waitlist, you fill in a Google Form run by SpaceZ. It collects only what you type (your email and, if you like, your first name), which is used only to tell you about Spike. Google hosts the form under its own privacy policy. To be removed, ask through the contact details below.
Your choices
- See everything Spike remembers in Life, and make him forget one thing or everything.
- Turn the microphone off in Settings.
- Remove your Gemini key in Settings; without it Spike cannot chat and nothing is sent to Google.
- Uninstall the app to delete all of its data from your computer.
Children
Spike is not directed at children under 13. Google's Gemini API requires its users to be 18 or older (or the age of majority where they live) to create an API key.
Changes and contact
If this policy changes, the new version will be posted at this address with a new date. Questions: github.com/nur-arpon/Spike/issues.
(c) 2026 Nur Ifran Arpon · SpaceZ
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