Captly AI: Captions & Hashtags

Captly AI is the fastest way to write social media posts that actually land. Whether you are a creator, a founder, a marketer or a small business owner, Captly AI turns one idea into scroll-stopping captions, punchy hooks and discovery-ready hashtags in seconds.


WHAT CAPTLY AI DOES FOR YOU

Stop staring at the blinking cursor. Type a topic, pick a channel, and let Captly AI draft a ready-to-post caption with the right tone, length and hashtag mix for that platform. Need a stronger opening line? Generate five scroll-stopping hooks with one tap. Want to know which version performs better? Run an instant A/B test. Plan your cadence for the week ahead with the built-in content calendar. Everything you need to keep posting consistently, all in one app.


FEATURES

AI caption generator that writes on-brand posts tuned to each platform.

Hook generator that crafts five scroll-stopping opening lines for any topic.

Hashtag research across three tiers: broad reach, mid-size balanced and laser-targeted niche.

One-tap remix that reshapes any post for seven platforms at once.

A/B split test that scores two caption variants on likely engagement.

Content planner with monthly grid, weekly auto-fill and per-day reminders.

Draft archive with pin, search, filter by platform and quick copy-to-clipboard.

Daily check-in streak that rewards you with free credits every day you show up.


PLATFORMS WE SUPPORT

Captly AI writes for Instagram, TikTok, LinkedIn, Twitter X, YouTube, Facebook and Threads. Each draft respects the character limit, pacing and tone of its platform, from the 280-character edge on X to the 2200-character Instagram caption, from SEO-rich YouTube descriptions to community-first Facebook stories.


BUILT FOR CREATORS ON THE GO

Offline-first design means your drafts live on your device, not in the cloud. Beautiful glass-morphism interface with light and dark themes. Haptic feedback and gentle animations make every tap feel premium. No clutter, no bloat, just a clean workspace that gets out of your way so you can focus on the work.


YOUR PRIVACY

Captly AI is built offline-first with a strict no-tracking policy. We do not collect analytics, we do not sell data and we do not show ads. Your drafts stay on your device. The only time your text leaves the app is when you explicitly hit generate, at which point your prompt is sent to an AI provider to produce a response. Read our full privacy policy for details.


WHO IS CAPTLY AI FOR

Creators who post daily and want to maintain quality without burnout. Solopreneurs building a personal brand on LinkedIn. Small business owners juggling Instagram and TikTok for their local shop. Marketing managers who need to ship cross-platform content on a budget. Anyone who has ever stared at a draft and thought, there must be a better way to write this.


GET STARTED IN THIRTY SECONDS

Install Captly AI, claim your welcome credits, type your first topic, and watch the words flow. No sign-up required. No email needed. Just open the app and start creating.


Crafted with AI, built for creators.