> ## Documentation Index
> Fetch the complete documentation index at: https://docs.replit.com/llms.txt
> Use this file to discover all available pages before exploring further.

# January 16, 2026

> 3 min read

export const WistiaEmbed = ({videoId, title = "Wistia video", playerColor = "FF0000", controlsVisibleOnLoad = false}) => {
  if (!videoId) {
    return null;
  }
  const url = "https://fast.wistia.net/embed/iframe/" + videoId + "?seo=false&playerColor=" + playerColor + "&controlsVisibleOnLoad=" + controlsVisibleOnLoad;
  return <Frame>
      <iframe src={url} title={title} allow="autoplay; fullscreen" allowFullScreen></iframe>
    </Frame>;
};

## What's new

* [Mobile Apps on Replit](#mobile-apps-on-replit)
* [Redesigned tool calls UI in Agent chat](#redesigned-tool-calls-ui-in-agent-chat)
* [Node.js security patch](#nodejs-security-patch)

## Platform

### Mobile Apps on Replit

<WistiaEmbed videoId="qic3maaggy" title="Mobile Apps on Replit" />

Build native iOS apps from a simple prompt. Agent creates full React Native apps, and you can add features like databases, Stripe payments, or OpenAI integrations as you go. Preview your app instantly by scanning a QR code with Expo Go, then publish to the App Store with one click.

Ready to build your first mobile app? Check out [Native Mobile Apps](/replitai/building-mobile-apps) to get started, or follow the [Build and launch a mobile app](/tutorials/build-and-launch-a-mobile-app) tutorial.

<Callout>
  **\$15K Mobile Buildathon**: Join the Mobile Buildathon to build something amazing and compete for prizes. [Learn more](https://replit.com/buildathon).
</Callout>

### Redesigned tool calls UI in Agent chat

Agent chat now features a cleaner, more compact interface for tool calls. Tool calls collapse into grouped rows with stacked icons, making it easier to see what's happening at a glance. File edits and creations link directly to the diff panel for easy review. This streamlined design helps you follow Agent runs with less noise and more clarity.

<Frame>
  <img src="https://mintcdn.com/replit/IvL8Us0zb5BGb7sp/images/changelog/2026-01-16/image_0b63088fa20e.png?fit=max&auto=format&n=IvL8Us0zb5BGb7sp&q=85&s=36247e9aaafa27f30008caba29810657" alt="Agent chat before redesign showing verbose output" width="589" height="588" data-path="images/changelog/2026-01-16/image_0b63088fa20e.png" />

  <img src="https://mintcdn.com/replit/IvL8Us0zb5BGb7sp/images/changelog/2026-01-16/image_31bff1284252.png?fit=max&auto=format&n=IvL8Us0zb5BGb7sp&q=85&s=f82a988d2055998eabccc3ebb16d7218" alt="Tool calls after redesign showing compact grouped actions" width="512" height="521" data-path="images/changelog/2026-01-16/image_31bff1284252.png" />
</Frame>

### Node.js security patch

A critical security vulnerability was announced in Node.js this week. All Agent development environments and Replit's Node.js applications have been patched to use secure versions. Your apps will also update to the secure version when you republish them.