Jannis Ringwald

Co-Founder, Born

[Jannis Ringwald @JannisRingwald]

Today, we’re officially releasing React Native Godot to the public.

For the first time, every React Native developer can create games with an amazing UI on top.

This unlocks a new era of apps and games.

https://t.co/FD2kpOKcoB

[Y Combinator @ycombinator]

TesterArmy is the simplest way to QA your website or mobile app.

It runs real tests across browsers and devices, catches regressions on every PR, generates tests from natural language, and much more.

Try now and start testing in minutes: @TesterArmy

[Jannis Ringwald @JannisRingwald]

@ycombinator @TesterArmy Congrats!!

[Din Bisevac @DinBisevac]

Q: How committed is the team at Buena?

@karlvili: Look at my arm

[Ben Carr @benatanam]

Introducing cara-3, the fastest real-time avatar model on the market.

Cara model delivers unmatched realism with sub-180ms response times, setting a new industry standard.

70% of users prefer video over voice.

Every pixel is generated in real time, unlocking natural eye movement, micro-expressions, and emotional subtlety so each conversation feels real.

Comment "CARA" for 500 free credits.

[Fabian Kamberi @fabiankamberi]

1.2M DAUs on Friends

[Szymon Rybczak @SzymonRybczak]

first day at @borndotcom today!

time to build some amazing React Native apps 🚀

[Jannis Ringwald @JannisRingwald]

Super cool to see how positive the feedback on our new Product Preview Life is.

It’s exciting to see people extending their social graph with AI friends and building real relationships with them

[Jannis Ringwald @JannisRingwald]

Happy to share with the public what we’ve been working on. Today, we’re previewing Life: AI friends that feel alive and real. Friends that can send you TikTok’s, know what’s going on in the world, and share content that’s relevant to the era you’re currently in.

One of the biggest challenges with AI friends is making conversations stay engaging and genuinely feel real over time.

Under the hood, Life combines a recommendation engine with large language models to predict what users want to talk about next. Every conversation generates preference signals that influence future topics, content, and timing, allowing interactions to evolve naturally.

[Fabian Kamberi @fabiankamberi]

Today we introduce Friends and preview Life, as we continue shaping the future of AI companionship.

Pengu evolved into Friends. A platform of trustworthy, fun, and social AI characters designed for moments that matter most. Pengu for social connection, Mellow for learning, Bao for wellbeing. With 1M+ daily actives and growing, Friends is the defining AI companion platform for a generation.

For the first time, we're also previewing Life, a photorealistic digital companion experience. Each AI friend becomes an extension of their user, creating personalized content that is shaped by ongoing interaction. Every breakout consumer company has emerged from a major technology or platform shift. AI friends is next and we're building it.

[Jannis Ringwald @JannisRingwald]

@prcWrites @OfficialLoganK Reached out to him!

[Born @borndotcom]

We’re excited to welcome @o_kwasniewski and @SzymonRybczak to Born.

They are exceptional engineers and fit perfectly into our mission to rethink how people connect with AI friends through our upcoming product.

Together, we’re building the category-defining company in companionship.

[Baran @barany6m]

We are hiring React Native engineers

If you care deeply about craft, product, and building the future of consumer social AI, join us

You’ll be working closely with @fabiankamberi and me

DMs are open

[Jannis Ringwald @JannisRingwald]

@AtheX_web3 Checkout my latest post

[Jannis Ringwald @JannisRingwald]

A technically interesting challenge when building Pengu was generating transparent images for each user’s unique Pengu.

With over 350 clothing items and countless possible combinations, plus varying device sizes, pre-generating images in the cloud quickly became infeasible.

To solve this, we moved the computation to the device itself by leveraging React Native Godot.

Here’s how it works:

① The user changes the Pengu’s clothing, and React Native calls a GDScript function.
② Godot opens a subwindow with a specific scene that renders the Pengu.
③ Godot takes a “screenshot” and closes the subwindow.
④ React Native receives the File Path of the screenshot as a return value.

You can get quite creative with how you leverage Godot’s subwindows. Screenshots are captured in just a few milliseconds, without the user ever noticing.

[Jannis Ringwald @JannisRingwald]

@lxnmnnn Yes

[Jannis Ringwald @JannisRingwald]

Today, we’re officially releasing React Native Godot to the public.

For the first time, every React Native developer can create games with an amazing UI on top.

This unlocks a new era of apps and games.

https://t.co/FD2kpOKcoB

[Jannis Ringwald @JannisRingwald]

We’ve also opened new positions in Berlin and New York! We’re looking for the best React Native Engineers who want to reach millions of people every day and work at the frontier of technology.

Check out our openings at: https://t.co/XerY9tJrRu

[Jannis Ringwald @JannisRingwald]

@WillMendoncaDev @BioblazePayne The final tests are running.

[Jannis Ringwald @JannisRingwald]

We’re open-sourcing React Native Godot this Sunday.

After a year of testing, polishing, and making it scalable across all the different Android devices.

Over the next few days, we’ll share all the different features we’ve built and best practices on how to use them.

We built much of Pengu’s core functionality on top of this library, and it opened up a whole new world of possibilities for us.

I can’t wait to see what you’ll all build with it!

[Fabian Kamberi @fabiankamberi]

Start over when good isn't great.

[Jannis Ringwald @JannisRingwald]

@paulocoutinhox We will launch it on Sunday!

[Jannis Ringwald @JannisRingwald]

One of the most important features for Pengu was the ability to download and launch different games (Godot pck's) on the fly.

Under the hood, our React Native Godot library manages the entire Godot lifecycle: stopping, cleaning up, and starting a new instance with a different pck.

Everything happens within milliseconds, without restarting the app.

[Jannis Ringwald @JannisRingwald]

@lastSonOfCy Sunday!