PromptHub
100% Free AI Social Suite

Post daily. Go viral.

Captions, hashtags, YouTube scripts and ad copy — generated by AI for every platform. Free, no account, powered by Google Gemini.

4

Social Tools

5+

Platforms

Free

No account

Viral

Hook-first copy

The Social Studio

Your entire content calendar, covered

Four tools that handle the whole content lifecycle — from the post to the ad.

Workflow

From idea to published post

1

Pick a hook

Describe your content once. The tools generate multiple hooks so you always have a scroll-stopping opener.

2

Generate per platform

Captions adapt to Instagram, TikTok, X or LinkedIn. Scripts get timestamps and visual cues. Ads respect each network's character limits.

3

Post & test

Use the ranked hashtags to extend reach, split-test ad variants, and let data decide what to post next.

Who it's for

Creators, brands and marketers

Stop staring at a blank caption box. Generate on-brand content in seconds, then spend your time engaging, not writing.

Creators Influencers SMMs YouTubers E-commerce Marketers
  • Content creators posting daily without writer\u2019s block
  • Social media managers scaling multi-platform calendars
  • YouTube creators outlining scripts in minutes
  • E-commerce brands writing ad variations for split testing
  • Influencers optimizing hashtag strategies for reach
  • Marketers launching campaigns faster

AI Social Studio — FAQ

Everything you need to know about the free social media tools.

Are the social tools really free?

Yes. All four tools — Captions, Hashtags, YouTube Scripts and Ad Copy — are free with no account required, powered by the free Gemini API tier.

Which platforms are supported?

Captions: Instagram, TikTok, X, LinkedIn and Facebook. Hashtags: Instagram, TikTok and X. Ads: Facebook, Google, TikTok and LinkedIn.

Will the content look unique?

Every generation is written fresh with varied hooks and structures. Still, add your own voice and community references to make it unmistakably yours.

Do the tools follow platform limits?

Yes. Ad copy respects headline and description character limits per platform, and captions are sized for mobile scrolling.

Can I use the generated ads commercially?

Yes. Use the ad copy and scripts for your business or clients. Review them before launching paid campaigns.