AI that sounds like you

The AI learns how you write from your own posts — and writes captions in that voice

Not a generic copywriter with your topic pasted in. Postgust reads your published posts, works out the tone, the length, the emoji habit, the openings and sign-offs and hashtags you actually use, and every generated caption follows that. Add your own rules on top. Then describe a picture and get one behind the words.

GenericYoursReads like a toolReads like you
Same topic, two writers.

01

Why it matters

People follow a voice
The reason someone stays is that the account sounds like one person. A caption that could be anyone's is the first thing they scroll past.
Learned, not described
You do not have to write a brand book. The voice comes from what you already published; you can add the rules only a human knows.
Pictures in the Studio
Describe the picture, pick a style, and it lands behind your headline at the network's size. Text and image from one place.

02

How it works

  1. 01

    Press Learn

    Settings → Brand voice. It reads up to forty of your posts and shows what it found: tone, emoji, length, typical openings, hashtags.

  2. 02

    Add your rules

    “We say you, never dear customers. No exclamation marks.” Your rules win over anything it learned.

  3. 03

    Generate as usual

    The AI studio in the composer works the same way — it just sounds like you now. Switch the voice off any time.

FAQ

Frequently asked questions

Short answers to what people ask before signing up.

Facebook Pages, Instagram (Professional accounts post directly; personal ones get a reminder at the scheduled minute), TikTok, LinkedIn, Pinterest boards and X. Each one connects through its own login — Postgust never sees your password.

The AI learns how you write from your own posts — and writes captions in that voice

Built for creators and small labels who post everywhere and have better things to do at 7pm.