Speak it. Keep it. Find it later.

What it is

A frictionless home for half-formed ideas

One mic tap transcribes live and keeps the original audio. From there, Eureka does the filing for you — labeling each spark, surfacing the ones that connect, and handing you a weekly digest of what you've been thinking about. No cloud required.

• Capture, hands-free

  Live transcription with an on-device recognizer, the original audio kept, a real recording clock, and a typed fallback whenever voice isn't an option.

• Auto-labels, transparently

  Each spark is tagged — idea, hypothesis, dialogue, personal, place — plus a topic, by on-device heuristics you can actually understand.

• Ideas that find each other

  Related sparks and threads are computed from your own data, so connections you'd have forgotten resurface on their own.

• A Sunday digest

  A weekly local notification with the through-line of your week — headline, a standout pair, and the count — scheduled on your phone, not a server.

• Search that respects the truth

  Exact-word search with highlighting over your real sparks. And Ask (Pro) answers only by citing the actual sparks it came from — no invented claims.

• Yours to take with you

  Everything persists locally, and one tap exports all your sparks and tasks as JSON through the system share sheet.

Built to last

Private by architecture, not by promise

Eureka's privacy isn't a policy line — it's the design. Recognition, labeling, linking and even the Pro "Ask" feature run on your device, so your thoughts never need to leave your phone. That discipline is the same one behind every Pralayantaka app. See how we build →