Second Brain

Spec sheet

Product

Second Brain is an iPhone notes app that lets users capture thoughts and ask questions about them later in plain language.Read 10 Oct 2026 · secondbrainnotes.app

Privacy

The maker says notes are isolated per account, AI processing requires explicit consent before the first note is processed, and notes are not used to train AI models.Read 10 Oct 2026 · secondbrainnotes.app

Maker

The app is described as developed by one person, Gökhan Çelikkaya.Read 10 Oct 2026 · secondbrainnotes.app

Answers

Second Brain answers questions from a user's notes and shows which notes it used.Read 10 Oct 2026 · secondbrainnotes.app

Capture formats

Users can capture text, voice notes, and photos in one chat.Read 10 Oct 2026 · secondbrainnotes.app

Deletion

The maker says users can delete everything at any time and that deletion is immediate and complete.Read 10 Oct 2026 · secondbrainnotes.app

Designed for

The maker describes use cases including parents remembering appointments, travelers recalling restaurants, and homeowners retrieving contractor quotes.Read 10 Oct 2026 · secondbrainnotes.app

Interface languages

The app interface is available in English and Turkish.Read 10 Oct 2026 · secondbrainnotes.app

Lists and reminders

The app can extract list items and schedule reminders from what users say.Read 10 Oct 2026 · secondbrainnotes.app

Organization

The app infers categories and does not ask users to file notes into folders.Read 10 Oct 2026 · secondbrainnotes.app

Photos

Photos receive captions automatically.Read 10 Oct 2026 · secondbrainnotes.app

Voice

Voice notes are transcribed in the background.Read 10 Oct 2026 · secondbrainnotes.app

Plans and prices

Every Second Brain plan and price →

Where Specifiction places it

• AI Note-Taking Apps#37 of 427.5