LingoHive | Devpost

Inspiration

Meet the future of language learning (and e-learning!). I built one of the most powerful language apps on the planet – entirely without writing a single line of code (100% Bolt magic!).
A problem many people have is being able to learn skills and languages in a quick, fun, interactive and memorable way that they enjoy.
LingoHive solves that. I've built interactive e-learning systems before for industry and have seen the impact they have on the world when done right.
A key inspiration I had was to get my 11 year son involved in Bolt, AI and tech, he helped with this project and also submitted 3 of his own

Talk to 42 AI Tutors! Chat naturally (type OR speak!) with 42 unique AI personalities on diverse topics. They speak back (thanks Deepseek & ElevenLabs)! Get real-time grammar & spelling correction in any language.
Interactive Video Tutors! Engage with AI-powered video teachers (powered by Tavus). It's like having a personal coach anytime.
Smart, Adaptive Learning: Dynamic difficulty adjustment, personalized quizzes, and engaging lessons that go way beyond the basics.
Seamless Experience: Full user logins & progress tracking (Supabase backend), smart notifications, recent activity feeds, and a slick permissions system (Free, Registered, Paid tiers – try the demo logins on the login forms).
Massive Scalability: 12 languages live (I can easily add more!), slick onboarding, and a platform I can instantly adapt to create any e-learning tool imaginable.
Built for Real Impact (and Value): This app can dent the language learning and so many other markets whilst teaching people skills in ways that really help them learn with ease and fun.
Professionally designed UI/UX (which I did with my own sketched and Google's new UI tool, Google Stitch). Fully mobile-responsive,

Shoutout to my 11-year-old son who helped me a bit on this app, he's also submitted 3 of his own apps to this hackathon.

I've been working in Product and Tech for 15 years and am an early adopter of many AI tools.

Bolt (not one piece of custom code or any other software dev tool), *Deepseek to generate chatbot message, dynamic personas, hints, spelling & grammar checks and response *ElevenLabs for text to speech and speech to text, *Tavus for Video interactive bots and *Supabase for the authentication, databases to save users progress and edge functions.

The project started getting too big for Bolt so I had to spend a lot of time optimising the project and dynamically loading content into it to bypass this
Had to get creative with LLMs to dynamically generate content to reduce hardcoding some elements
Tavus API was tricky to integrate and also very unique as there are some key thing I needed to do to force the video bot session to end on Tavus's servers
ElevenLabs voices were getting too excited after a few conversations so I had to create some custom workaround to naturalise them
I shared many of my tips with the Discord community and it helped quite a few people

One of the most powerful, engaging, simple and advanced language learning and e-learning tools in existence
An app that is so cool that you can have 2 way voice and text conversations with 40+ chatbots
Dynamic real-time learning content that constantly adapts to each user
Managed to make this fully with Bolt, not a single line of custom code or other code-gen tools
This app should have taken 5 developers, 4-5 months and $50k+ to build. I know this and have got it checked out by multiple people to confirm.

How to work around the 'project being too large' and solving that
How to push Text to speech, speech to text, LLM personas and video bots to their limits
How to rapidly create interactive lessons for multiple languages (modules, lessons, quizzes,etc), chatbots and video bots
How to create learning content that adapts to each individual user in real-time
How to perfect notifications that are slick, engaging and proactive for each different user

Improve latency on one of the APIs. I noticed the Deepseek API (used to power the chatbots conversations and personas) slowed down when you use the Netlify deployed URL after I moved the Deepseek API to Supabase edge functions
Integrate Stripe, I've already done that on my other project submission
Create lesson content for many more languages and modules and get them to dynamically load in from Supabase for users