Collie

Does Collie have a moat?

No.

4/100 · Moatless

“The founder says he built Collie in a couple of weekends with AI agents. A clone takes the same time, and nothing keeps users from leaving.”

Code to copy

a weekend

Moat to cross

none

Market

Crowded market

Share on X

Moat depth

MoatlessShallowReal

Revenue not verified. Founders can list on TrustMRR to show it here.

01/The verdict

A $19 one-time-purchase Mac writing app with focus mode, a reader mode for notes, automatic revisions and milestones. Bought by individual writers and thinkers who want a calm place to draft.

Collie is a polished side project in one of the most crowded app categories on the Mac. On the Why page, founder Kacper Cygan says it took a couple of weekends of agent-assisted coding and admits it can surely be vibe coded. There's no audience to speak of (his GitHub has 6 followers and no X following turned up), no App Store presence, no sync network and no data lock-in, so nothing slows down a clone or a switch to iA Writer, Bear or Ulysses.

02/Moats

No moats found. Nothing here would take a good clone longer than a weekend.

03/The gap

Easy to copy

Focus mode, reader mode with annotations, and auto-saved revisions with milestones are standard text-editor features that agents rebuild in days.
The $19 one-time price is easy to undercut. MinimalWriter already sells at $9.99 one-time, and free options like Apple Notes and Obsidian exist.
The generated wallpapers and the calm design are taste, not a barrier. Another builder with good taste matches them in a weekend.
Documents are personal writing that's easy to export, so users lose little by moving to another app.

How you'd go after it

Ship the same calm editor with iPhone and iPad sync. Collie is Mac-only and Apple Silicon-only, and cross-device sync is the main thing Bear and Ulysses charge for.
List on the Mac App Store and Setapp, where Collie isn't sold and where impulse buyers of writing apps actually shop.
Aim at a niche with a real workflow, like journaling with prompts, engineers' work logs or newsletter drafting, and build the content and SEO around it.
Offer a free tier or a lower one-time price to pull in users who compare iA Writer at $49.99 with Collie at $19.

04/Build against it?

Stay away

Minimalist Mac writing apps are a saturated, low-price market with entrenched leaders and dozens of weekend clones. Only enter if you already have an audience of writers or a distribution channel like a newsletter or an App Store feature. Otherwise you ship to nobody, the same as Collie does today.

Already selling this:iA WriterUlyssesBearTyporaObsidianDrafts

05/Receipts

Checked 2h ago by Claude Opus 5.5 on high effort, with web search. Confidence: high.

Does yours?

Paste your website. You get your score in about a minute.