Where each tool is actually private.
NotebookLMSciSpace
Training on your dataPartialPartial: Gemini Notebook (formerly NotebookLM): for personal Google accounts, Google says content “will not be used to directly train our foundational AI models, unless you choose to provide feedback.” Reviewed feedback and included content are kept for up to 3 years, disconnected from your Google Account. For Workspace and Workspace for Education accounts, uploads, queries and responses are not human-reviewed, even with feedback, and are not used to train AI models. Source: Google, Gemini Notebook privacy help (linked in Sources)PartialPartial: SciSpace's help article dated 4 Mar 2025 says uploaded PDFs are private and are not used to train its AI models, for free and paid users; rechecked 13 Oct 2026. This covers Library PDFs, not a verified rule for prompts, chats or Agent outputs. The policy was unreadable in the 11 Oct shell pass; a 13 Oct text fetch does not replace the pending browser reconciliation. No blanket no-training guarantee or verified training opt-out is asserted.
EU data residencyUnknownUnknown: UnknownUnknownUnknown: The policy text fetched 13 Oct 2026 describes US hosting and possible processing elsewhere. No EU-only option has been verified; the embedded policy still needs a browser pass. EU data-subject rights do not establish EU data residency.
SOC 2 attestationUnknownUnknown: UnknownUnknownUnknown: No primary SciSpace SOC 2 report was checked as of 13 Oct 2026. Secondary certification claims are not verification; the PDF help page's security wording is not a SOC 2 report.
Local-first by defaultUnknownUnknown: UnknownNoNo: The documented product is a hosted web workspace with PDFs stored in the SciSpace Library. No local-only workflow was verified in the sources checked 13 Oct 2026; a private Library is not local storage.