Coffee is a native Mac Markdown editor. Your notes stay plain Markdown files in a folder you choose. Answers to sums appear beside the line, maths and Mermaid diagrams are drawn natively, and you review every change an AI tool makes to a note. 14 days free.
Hi, I'm Pedro. I made Coffee because I wanted one Mac app for writing in Markdown that stays out of the way, keeps notes as plain files, and answers the small sums I write anyway: a trip budget, hours times a rate, how many workdays are left.
1.4 is about finding your way around a big library: folders in the sidebar with pinned notes and a sort order per folder, replace across all your notes with a preview where you can untick any change, and version history that says what changed ("New section 'Goals', +40 words") and lets you name the versions you want to keep. Light and dark can also follow a schedule you set.
Earlier versions added maths and Mermaid diagrams drawn natively (no web view), calculations in plain words, and EPUB books from a folder of notes.
It's Mac only for now. I'd really like to hear what you'd change.
version history that says what changed, like "New section Goals, +40 words", is a nice touch for plain files. can you restore an older version without losing the newer one?
The plain Markdown files in a folder I choose is the part that would win me over — I’ve lost notes to proprietary formats before, so that plus native Mermaid is a strong combo. The sums beside the line are clever too, especially for a running total in a list. Curious: when an AI tool edits a note, is the review a diff I approve line by line, or a whole-file accept/reject?
Will it total a shopping list where each line just ends with a price, with no plus signs anywhere?
Update for anyone arriving now: there's a 50-second demo at the top of the gallery, with sums answering themselves, a diagram drawing as you type and an AI edit being reviewed.
One question I'd love answers to: what's the one thing your current notes app gets wrong for you?
About Coffee on Product Hunt
“A quiet Markdown editor for Mac, with sums in your notes”
Coffee launched on Product Hunt on November 10th, 2026 and earned 99 upvotes and 9 comments, placing #10 on the daily leaderboard. Coffee is a native Mac Markdown editor. Your notes stay plain Markdown files in a folder you choose. Answers to sums appear beside the line, maths and Mermaid diagrams are drawn natively, and you review every change an AI tool makes to a note. 14 days free.
Coffee was featured in Productivity (665.5k followers) and Notes (8.4k followers) on Product Hunt. Together, these topics include over 183.9k products, making this a competitive space to launch in.
Who hunted Coffee?
Coffee was hunted by Pedro Thomaz. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Coffee stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Pedro Thomaz
Hi, I'm Pedro. I made Coffee because I wanted one Mac app for writing in Markdown that stays out of the way, keeps notes as plain files, and answers the small sums I write anyway: a trip budget, hours times a rate, how many workdays are left.
1.4 is about finding your way around a big library: folders in the sidebar with pinned notes and a sort order per folder, replace across all your notes with a preview where you can untick any change, and version history that says what changed ("New section 'Goals', +40 words") and lets you name the versions you want to keep. Light and dark can also follow a schedule you set.
Earlier versions added maths and Mermaid diagrams drawn natively (no web view), calculations in plain words, and EPUB books from a folder of notes.
It's Mac only for now. I'd really like to hear what you'd change.