BuildFree

Post Composer

Save your creator context once, then write scripts and captions that already know your niche, voice, and audience.

What it does

Post Composer is home to two tools that share your creator context: Script Writer (three different video scripts per run) and Caption Optimizer (three different captions per run, with hashtags, alt text, and pinned-comment options). Both read from the same saved context, your niche, audience, voice, goal, and CTA, so a script and its caption speak in the same voice and drive to the same action.

Set your shared context once, fill in the rest on your profile, and every run pulls from it automatically. Both tools also remember your inputs: click "Adjust inputs" on any past run and every field comes back exactly as you left it, so you can iterate without retyping.

Post Composer screenshot (1 of 2)
Post Composer screenshot (2 of 2)
Key features

What makes it work

Script Writer: three real angles per run.

Every generation returns an educational take, a contrarian take, and a personal-story take. Same topic, three genuinely different scripts.

Length that maps to a word budget.

Pick your target length and the word count adjusts automatically, with optional b-roll cues and on-screen overlay copy inline.

Two hook modes.

Generate a hook in one of five styles, or paste your own from Hook Generator.

Caption Optimizer: three real openers per run.

A question opener, a statement opener, and a story opener, every time.

See the "…more" cutoff.

Every caption shows where the platform hides the rest behind "…more," so you can make sure your hook lands before the fold.

Hashtags, sorted.

Returned grouped by trending, niche, and branded, at the count you choose, not one flat pile.

Accessibility and pinned comments, optional.

Toggle alt text and a pinned-comment hook on any run.

Iterate without retyping.

"Adjust inputs" on any past run brings every field back.

Who it's for

Pick your scenario

You want three real script angles on one topic without running it three times.

The same idea can be told as a lesson, a hot take, or a personal story. One pass gives you all three genuinely different scripts, so you can pick the angle that fits before you film.

Scripts and captions that already know your voice.

Three angles per script, three openers per caption, all from one saved context.