AI Caption Writer
Generate scroll-stopping captions in 13 different tones — from casual to witty, motivational to sexy. Pick your language, hit generate, and get three ready-to-post options instantly.
Create brand characters, write captions, generate images, craft hashtags, and manage DMs — all from one beautiful desktop app. Text AI powered by LM Studio (local) or OpenRouter (cloud). Image generation powered by Gemini’s Nano Banana.
13+
Tone styles
6
Aspect ratios
100%
Local & private
3+
AI providers

Your Instagram credentials, content, and data never leave your machine. No cloud storage, no third-party access.
Captions, hashtags, and DM replies use LM Studio (local, free) or OpenRouter (cloud). Image generation requires Gemini’s Nano Banana model with an API key.
Bring your own API keys for OpenRouter and Gemini. Text generation also works fully local with LM Studio — no API key needed. No middleman, no markup.
everything you need
Stop juggling between apps. LMInsta combines AI-powered content creation, brand character management, and smart content planning into a single desktop workspace.
Generate scroll-stopping captions in 13 different tones — from casual to witty, motivational to sexy. Pick your language, hit generate, and get three ready-to-post options instantly.
Get hashtags that actually work. AI groups them into High reach (1M+), Medium (100K–1M), and Niche (<100K) tiers so you can nail your discoverability strategy every time.
Turn a text prompt into stunning visuals powered by Gemini’s Nano Banana model. Refine prompts with AI, pick from 6 aspect ratios (1:1, 4:5, 9:16, and more), and send images straight into your post workflow. A Gemini API key is required.
Create unique brand characters — human, animal, or company. Each carries an AI-generated 'soul' so every caption, reply, and image stays perfectly on-brand.
Never struggle with DM replies again. Give the AI your brand persona and incoming message — get three perfectly crafted replies with different angles: warm, playful, or direct.
Track everything you create. Browse your archived posts, filter by character or status, and revisit your content anytime.
how it works
No complex setup, no learning curve. Just open the app and start creating content that matches your brand.
Generate AI images with prompt refinement, or drag in your own photos and videos. Choose from 6 aspect ratio presets optimized for Instagram.
Pick a tone, select your language, and let AI write captions that match your character's voice. Add smart hashtags grouped by reach potential.
Preview your complete post, copy caption and hashtags with one click, then paste into Instagram. Save everything to your archive for future reference.
simple pricing
Every plan unlocks the complete LMInsta desktop app with all AI tools, character system, and content planning features.
MONTHLY
Perfect for creators who want flexibility. Full access to every AI tool and feature, cancel anytime.
$12 / mo
YEARLY
Best value for serious creators and teams. Everything in Monthly, plus you save $45 per year.
$99 / yr
downloads
Grab the latest desktop installer for macOS or Windows. Install in minutes, connect your local AI model, and start creating.
New releases will appear here automatically when published. Check back soon!
get started
Join creators who are saving hours every week with AI-powered content creation that runs entirely on their machine.
Privacy-first by design
Your content and credentials never touch our servers.