Synapse Notes vs PhiNote

Synaps Notes is a private, on-device note app built for local AI. Write and organize notes directly on your iPhone. Chat with your own notes and documents using local AI models. Import PDFs, images, and text files with OCR support. Keep your data on-device by default, with optional Google Drive backup. No account is required to use the core features

PhiNote is a private notes app with a real AI built in — and it never leaves your phone. Write your notes like you always do. Then ask PhiNote anything about them: "What did I write about SN2 reactions?" or "Summarize chapter 4." The AI reads your notes and answers instantly, because it's running locally with Qwen3 — not in the cloud. Studying for a test? Tap Quiz Me and PhiNote turns any note into a quiz on the spot. Get scored, see exactly which questions you missed, and review before your next session. Why on-device matters: • Your notes and questions never touch a server • Works with zero internet connection • No accounts required to use the AI • Nothing to leak, nothing to subscribe to just to feel safe Built for iPhone and iPad, with a proper split-view layout on iPad so your notes and chat sit side by side. Free to write, organize, and read your notes. Unlock on-device AI — chat and Quiz Me — with a one-time purchase. Private by design. Smart by default.