Start free
your friendly content sidekick

Write one post. It fits every app, and posts it for you.

Bring a rough idea. Quillcaster turns it into the right version for each platform, publishes it on your schedule, and shows you what is working, so social media stops eating your evenings.

Start free See how it works free to start, no card →

Live today on Bluesky, Mastodon, and Farcaster. Instagram, Facebook, and LinkedIn are rolling out. Join early access.

your idea
We finally opened our online store this week, after a year of nights and weekends. Here’s what building it taught us.
…becomes a post for each app ↓
M
Mastodonthread
A short thread on opening our online store after a year of weekends, the messy parts included.
in
LinkedInpost
After a year of nights and weekends, our little shop is finally online. Here’s what we learned building it.
bs
Blueskypost
it’s live. the shop is finally live. thank you to everyone who kept asking when.
three easy steps

You do the fun part. We do the rest.

1Toss in an idea

A note, a link, a voice memo. However it falls out of your head. No format required.

2Get your posts, written

We rewrite it to fit each app, always in your voice, never a robot.

3We post & learn

We publish at the right time, notice what people liked, and leave next week half-drafted. You review and approve before anything goes out.

see it in action

One idea in. A post made for each app.

The same thought, rewritten to fit each app, in your voice.

Composing one idea and getting drafts made for Bluesky and Mastodon
what it does for you

Two jobs, both handled.

It writes each postthe writing

Give it one idea. It turns that into the right version for each app, in your voice, so you are not staring at a blank box eight times.

It posts and learnsthe posting

It publishes at the right time, notices what people liked, and leaves next week half-drafted. You review and approve before anything goes out.

the good stuff

It does more than schedule posts. It writes them too.

Anyone can line up a post. These are the bits that actually save your week.

Written to fit each app, never copy-pasted
Every app gets its own version in its own language, never one caption pasted eight times.
Knows when to post
It learns the times your audience actually shows up, per platform, instead of a generic best-time chart.
Sounds just like you
It learns your voice from your old posts, so everything reads like you wrote it. Nothing stiff or generic.
Drafts your whole week
It reads what’s working and hands you next week half-done. You review and approve before anything goes out.
On the newer apps too
It posts to Bluesky, Mastodon, and Farcaster as well, so you are ready wherever your audience goes next.
Feed it anything
Point it at a blog post, a podcast, or a newsletter, and out comes a whole week of posts.
made for

For anyone with too much to post.

If you need to be in a lot of places and only have one pair of hands, this one is for you.

Creatorsbe everywhere
You have to be on every app, but you can only make the thing once. Now once is enough.
Small teamsno social hire
Promote your product across every channel without hiring someone just to run social.
Agenciesmany clients
Run a dozen clients, each with their own voice and their own approval flow, from one tidy place.
Small businessesone pair of hands
You run the shop and the socials both. Quillcaster posts everywhere for you, so your evenings are yours again.
apps we support

Everywhere your people are.

The apps you already use, plus a few newer ones the big tools skip. Official connections only, no sketchy workarounds.

Ready nowconnect and post today
BlueskyMastodonFarcaster
In reviewbuilt, awaiting each platform’s approval
InstagramThreadsFacebookLinkedInPinterest
On the roadmapcoming, not here yet
TikTokYouTubeX
good questions

Bits you might be wondering.

What is Quillcaster, in one breath?
You bring one idea; Quillcaster turns it into a post made for each app, publishes them at the right time, and learns what your audience responds to. One idea in, a little you on every app.
Is this just an AI caption button?
No. It writes a genuinely different post for each app in your voice: a longer post here, a caption for a photo there, a polished version for LinkedIn, a short punchy one for a quick post. Then it schedules, publishes, and learns what works. The scheduling is the boring part, not the point.
Will everything sound like a robot?
It learns your voice from your own posts, so it reads like you on a good day. Every workspace gets its own brand voice, and you can always edit before anything goes out.
Do I have to approve every post?
You are in charge. Review it, tweak it, or just hit go. Once you trust a channel you can let it run, and the approval workflow is there for teams and agencies that need a second set of eyes.
Which apps can I post to right now?
Three are open and ready today: Bluesky, Mastodon, and Farcaster. Connect your account and post. Five more are built and going through each platform’s app review: Instagram, Threads, Facebook, LinkedIn, and Pinterest. Others (TikTok, YouTube, X, and more) are on the roadmap. Official APIs only, no sketchy workarounds.
How much does it cost?
Free to start while we are in early access, and no card is needed to begin. Paid plans come later, priced per seat or per workspace.
psst, got an idea?

That’s the hard part done. We’ll take it from here.

Start free today. Bring one idea and watch it become a post made for each app.

Start free