Croni Mobile: The AI-powered Ghostwriter

Social Media AI-Ghostwriter Mobile App

Inspiration

Social media starts on mobile — so we have built a Social Media AI-Ghostwriter mobile app in order to bring social media marketing into the pockets of marketers and creators. Our goal was to build a tool that automates the routine tasks — scheduling, ideation, and optimization — so that users can focus on what matters most: creativity and strategy.

We believe in using AI not to replace humans, but to empower them — removing repetitive work and giving people more time to do what only humans can do best.

What it does

Users can create and manage multiple AI-driven bots, each with customized tone, voice, and posting logic. Once connected to the desired social media platforms, bots can generate, suggest, or directly publish content, based on a smart content calendar built into the app.

The app includes a built-in content assistant that recommends relevant topics, enhances copywriting, suggests improvements, and provides optimal hashtags. It supports both semi-automated and fully automated workflows — users can edit AI drafts or let the bots post autonomously after approval.

Croni’s recommendation engine continuously adapts based on usage data, making post suggestions more personalized and effective over time.

How we built it

Croni’s frontend was built using Bolt.new, which helped us speed up UI development without compromising on design or responsiveness. This allowed our dev team to focus entirely on building a stable backend API.

What powers Croni mobile app is a network of real-time data integrations—from news outlets to social platforms like Reddit, X (Twitter), and more. Using vector embeddings, the app processes this content, detects patterns, and translates it into personalized post suggestions. We built an adaptive ML model that learns directly from user behavior. Every like, post, or comment helps it refine its understanding of your style and audience.

The result? Croni AI doesn’t just react — it anticipates. It doesn’t just generate — it thinks. All the complexity stays behind the scenes while the user gets simple, human-sounding, on-brand content.

Challenges we ran into

One of the biggest challenges in developing the mobile app was integrating the web-based bot setup flow via WebView, ensuring seamless communication between the mobile and web versions of the application.

Additionally, since this was our first experience working with Bolt.new, we had to adapt our workflow to the platform’s unique structure. That included learning how to implement our design system within Bolt, and finding the best way to structure prompts in order to ensure the AI-generated results aligned with our intended tone, logic, and visual consistency.

Accomplishments that we're proud of

We successfully developed a fully functional AI-powered mobile app that solves a real-world challenge: making social media marketing more efficient, accessible, and intelligent — right from your phone.

What we’re especially proud of is delivering a seamless user experience and powerful automation tools in one compact app. Moreover, the calendar view, designed with a familiar monthly layout similar to Google Calendar, gives users full control over their content strategy. It’s already a strong feature, and we’re excited to continue improving it to provide even more flexibility and personalization.

What we learned

This project was a significant learning experience for our team, especially for our younger professionals. We gained hands-on experience with key technologies such as React Native, API development and integration, and WebView communication between mobile and web layers.

We also deepened our understanding of AI technologies — from integrating language models to building intelligent systems that adapt to user behavior. Working on such a technically and creatively demanding project helped us grow not only in skill, but also as a team. We’re proud of how far we’ve come and excited to keep building at this level.

What's next for Croni Mobile: The AI-powered Ghostwriter

We really believe in Croni mobile app and see it as a powerful tool that can make social media marketing smarter and more accessible.

Next up: we’re adding push notifications to let users know when new AI content is ready to review. We’ll also keep training Croni’s brain using real user data, making post suggestions more personalized for each platform’s unique vibe and best practices.

Additionally, we’re planning to support more platforms soon — and bring in image generation so that even visual-first channels like Instagram can be managed more easily. Moreover, we’re working on smarter AI suggestions, tips, and insights — so even if you’re not a marketing expert, AI-Ghostwriter will help you create and grow like one.