Heddy vs RemNote: notes that become cards, or lessons that do

RemNote's idea is that your notes and your flashcards should be the same document. Heddy's is that your flashcards should come out of being taught. Both are attempts to remove the card-writing wall, from opposite ends.

At a glance

What RemNote does better

The core insight is genuinely good. Card-writing dies because it's a separate chore at the end of studying. RemNote's answer — mark a phrase in your notes and it becomes a card, in place, still attached to the context it came from — attacks that directly and elegantly. When it works, it's the best version of the "notes become revision" idea anyone has shipped.

It's a real workspace. Hierarchical documents, backlinks, PDF annotation, references. For a student building a body of knowledge across a whole course, that's a serious tool and Heddy isn't trying to be one.

Cards keep their context. A RemNote card knows which note it came from, so a card you can't answer can be traced back to the paragraph that explains it. That's the closest any pure flashcard product gets to answering "but why?".

It scales to university and beyond. Its keenest users are medical students with tens of thousands of cards. Heddy covers seven school subjects and stops.

What it asks of you

A workflow. That's the whole caveat, and it's a big one for the age we build for.

RemNote is excellent if you already take structured notes. It cannot help you if you don't, and most fourteen-year-olds don't — not from laziness, but because writing notes worth reviewing is a skill usually taught late, if at all. A tool whose input is good notes has the same failure mode as Anki, one step earlier: Anki needs you to write good cards, RemNote needs you to write good notes.

There's also a version of a familiar problem hiding in the elegance. A card made from your own notes contains your own understanding of the topic — including whatever you misunderstood when you wrote them. If you noted a definition slightly wrong in October, RemNote will faithfully schedule that wrong definition into your long-term memory until March. There's no second pair of eyes in the loop.

Where Heddy's cards come from instead

From a tutor who just watched you get something wrong.

/cards at the end of a session and the professor writes the deck — one fact per card, correct by construction, with the misconception you actually displayed recorded on the relevant cards. You didn't have to have taken notes, and nothing wrong of yours got copied forward. How that works.

And the tracing-back that RemNote does with a note, Heddy does with a person. On the back of a card you've marked Again, you can take that card to the professor who owns the subject, arriving with the question already asked. A note explains what you wrote down. A tutor can tell you why you keep getting it wrong. The difference.

Which to choose

RemNote if you're an organised sixth-former or university student who already takes real notes, wants one workspace for everything, and enjoys building a system.

Heddy if you're in KS3 or early GCSE, don't have a note-taking practice yet, and the actual problem is that some of this was never explained clearly to you.

Honestly, both, later. RemNote is a good place to grow into. Heddy is built for the years before you can use it well.

Comparison written 10 Sep 2026 from each product's public description. Features and pricing change — check the current App Store listing before deciding. Written by Duke Harewood, who builds the tutors at aitutors.me.