Who it is for
Learners who want a card deck that fills up from the chats where they first met the material.
Overview
SFT Brain is a flashcard service with a ChatGPT connection for building and working through cards without switching apps. An account has to be linked first.
Once connected, the app can store question and answer pairs, search cards already saved, pull up the ones due for review, and record how each answer went with feedback from the model. It can also save visual study widgets and report on learning progress.
The record lists study cases including language learning, coding concepts, exam preparation, and holding on to information that came up during a conversation.
Learners who want a card deck that fills up from the chats where they first met the material.
Cards are not just created here: review queues and answer grading run in the conversation too.
Availability
SFT Brain is listed in the ChatGPT apps directory only. NutriGuide LLC has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
Nearby
Create language flashcards synced to a mobile app
ChatGPT
Generate Quizlet flashcard sets from prompts or files
ChatGPT
Generate quizzes and flashcards from lesson material
ChatGPT
Checks on citations, spelling, logic and BibTeX records
ChatGPT
Builds flashcard decks from uploaded study documents
ChatGPT
Builds quiz questions from supplied source content
ChatGPT
This is an independent catalogue entry compiled by Node8 from SFT Brain's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with NutriGuide LLC, and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.