Reloadium / InstaVibe Simulator

Simulate Your Instagram Posts with AI

InstaVibe Simulator is an AI-powered creative tool that lets you preview exactly how your photos would look and perform on Instagram — before you post. Upload your images and get instant AI-generated captions, hashtags, estimated likes, and realistic comment threads.

Whether you're a content creator, social media manager, or just curious about your photo's potential, InstaVibe gives you actionable insights to craft better posts and maximize engagement.

Key Features

Multi-Image Upload

Upload one or multiple photos and get a complete Instagram post simulation including captions and hashtags tailored to your images.

Realistic Comment Threads

AI generates authentic-sounding comments with replies, likes, and engagement patterns based on your content and audience settings.

Engagement Insights

Receive actionable suggestions to improve your post's reach, timing, and audience interaction specific to your content.

Profile Customization

Set your username, follower count, audience description, and privacy settings for more accurate, personalized simulations.

Simulation History

Browse and reload past simulations stored locally in your browser — your data never leaves your device.

Caption & Hashtag Generator

Get creative, on-brand captions and relevant hashtags automatically generated from your images and profile context.

How It Works

  1. 1

    Upload Your Photos

    Drag and drop or select one or more images you want to simulate as an Instagram post.

  2. 2

    Customize Your Profile (Optional)

    Set your username, follower count, and audience description so the AI tailors the simulation to your actual account.

  3. 3

    AI Analyzes & Simulates

    Gemini AI analyzes your images and generates a realistic Instagram post — caption, hashtags, estimated likes, comment threads, and engagement suggestions.

  4. 4

    Explore & Iterate

    Review your simulation, load more comments, or reset and try different images to refine your content strategy.

Perfect For

Content Creators

Preview how your posts will be received before publishing. Optimize captions and hashtags to maximize reach and engagement.

Social Media Managers

Quickly simulate posts for clients to set realistic expectations on engagement and get AI-generated copy suggestions.

E-commerce & Brands

Test product photography and promotional content to see which images and captions resonate best with your target audience.

Students & Learners

Understand Instagram engagement patterns and learn what makes content perform well — powered by AI analysis.

Powered by Advanced AI

InstaVibe Simulator is powered by Google Gemini's multimodal AI, which analyzes the visual content, mood, and aesthetic of your images to generate contextually accurate Instagram simulations.

  • Google Gemini multimodal AI for image understanding and natural language generation
  • Secure /api/hello proxy — your API key is never exposed in the browser
  • Firebase Authentication for secure, personalized access
  • IndexedDB (via idb) for private, local simulation history storage
  • React 19 + Tailwind CSS v4 for a fast, responsive experience

Privacy & Data

InstaVibe Simulator is designed with privacy in mind. Your images and data are handled responsibly and never used beyond generating your simulation.

  • Your uploaded images are sent to the AI only to generate the simulation and are not stored on our servers
  • Simulation history is stored locally in your browser using IndexedDB — only you can access it
  • Firebase Authentication handles sign-in securely — we never store plain-text passwords
  • No personal data is sold or shared with third parties

Frequently Asked Questions

How does InstaVibe Simulator work?
You upload photos and the AI analyzes their visual content to generate a realistic Instagram post simulation — including captions, hashtags, comment threads, and engagement metrics.
Does it actually post to Instagram?
No. InstaVibe Simulator is a creative planning tool. It simulates what your post might look like and how it might perform without ever connecting to your Instagram account.
Can I customize the simulation for my account?
Yes. In the Profile Settings panel you can set your username, follower count, audience description, and account privacy to get more tailored and realistic results.
Where is my simulation history stored?
Simulation history is stored locally in your browser using IndexedDB. Nothing is sent to any external server — your data stays on your device.
Can I load more comments?
Yes. After the initial simulation, click 'Load more comments' to generate additional authentic-sounding comments up to the estimated total comment count.
Do I need an account to use InstaVibe?
No account is required to try it. However, signing in with a Reloadium account lets you use credits for unlimited simulations and access your history across devices.

Ready to Check Your Post Vibe?

Upload your photos and see AI-simulated captions, comments, and engagement insights in seconds.

Launch InstaVibe Simulator