Capture fleeting ideas by voice or text, sharpen them with a quick AI interview, research them on the web, and turn them into action — before they slip away.
Available now on iPhone. Free to capture — Pro unlocks unlimited refining & research.
Most good ideas vanish before you do anything with them. Thought Spark catches them the instant they strike — then helps you move them forward.
Tap once and talk, or type. Thought Spark transcribes your voice and gives every idea a title and tags automatically — no friction, no blank page.
A short AI interview asks the right questions to turn a vague notion into a sharp one — tuned to how you think.
Send an idea to the web for prior art, key context, risks, and directions — with real sources.
Generate reminders, a focused calendar work-block, and concrete next steps so the idea actually moves — straight into Reminders and Calendar.
Capturing and organizing ideas is always free. Upgrade for unlimited refining and deep web research.
Thought Spark stores your thoughts, transcripts, and notes locally — not on our servers. Content is sent for AI processing only at the moment you use a feature, and never used to train models. Read our privacy policy →