Coding agents write mobile code faster than any team can review it. 🙌 Introducing Expo Simulators: cloud simulators built for agents. Your agent runs its change on a cloud simulator or emulator and brings back the recording before it asks for your attention.

Now your agent can: 1. Start a cloud iOS simulator or Android emulator with one command: 𝚎𝚊𝚜 𝚜𝚒𝚖𝚞𝚕𝚊𝚝𝚘𝚛 --𝚙𝚕𝚊𝚝𝚏𝚘𝚛𝚖 𝚒𝚘𝚜 (or 𝚊𝚗𝚍𝚛𝚘𝚒𝚍) 2. Install the build and tap through it 3. Hand you screenshots and a screen recording as proof Expo Simulators work with the coding agents you already use: Claude, Codex, Grok and more.

Some of what Expo Simulators unlock: → Agentic CI: every PR tested on a simulator, PASS or FAIL with the recording → Bug triage: a TestFlight screenshot becomes a reproduction and a fix → Review from a link: PMs and designers tap through the new build in their browser before merge

No Mac needed. Agents on Linux or Windows get an iOS Simulator in the cloud, several at once, and your laptop’s RAM stays free. Available now on Starter, Production, and Enterprise plans. Get started:

@JI Awesome

@JI One of the biggest pain points for agentic coding is the QA component. Most people just don't do it (or do it enough). Automating some of that change testing is a great idea. Expo Simulators ftw!

@JI I feel the exact same way! I've been running my QA swarms on them and it's been a game changer for catching bugs. For anyone that wants to try:

@JI 🔥🔥🔥

@JI 🔥😎

@JI 👀

@JI Game changer !!!! 📱📱📱

@JI Seriously though!

@JI congrats @expo team!

@JI Thanks @b_szafranow!

@JI An agent that shows a recording before bugging me sounds polite

@JI A recording, screenshots, and a link to a live preview of the build on a simulator 👀 A very polite host for sure 😂

@JI We loved using it in Early Access. Congratulations on the official release!

@JI Thanks @charlesvinette! What's your favorite flow to run on sims?

@JI yaaaaas

@JI 🙌

@JI this is super sick congrats on the launch Expo team!

@JI Thanks @kloss_xyz! We're very excited over here 🙌🏽

@JI The missing puzzle for my cloud agents 🤌

@JI Exactly how I felt when I used it the first time! Where do your agents run right now? 👀

@JI Recording is the best part. watching a quick video is so much easier than pulling the branch and running it myself every time 🙌

@JI

@JI this is gold 😂

@JI Been waiting for this. Pumped to work with you guys.

@JI glad you're here! 🙌🏽

@JI watching my agent test the app while i drink coffee is the dream

@JI truly ☕️ nothing like sitting down to an open PR with screenshots, a recording, and a live link to the build to test yourself. game changer for reviewing code

@JI i've always felt testing mobile apps is harder than writing the actual code 😭

@JI love it, also the agentic CI part is crazy.. every PR gets tested on an actual simulator

@JI And I cannot wait to test it out fr!!

@JI Can't wait to hear what you think! What do you plan to run on it 👀 Here's some ideas from @JacobHammerle for inspo:

@JI the tool i needed 🔥

@JI Oooo, what are you going to use it for?

@JI I loved Expo Go but THIS THIS I NEED Congrats on the launch, finally my agents can check their homework 😍👏👏

@JI Phenomenal product launch team !!

@JI iOS simulator without a mac is huge for linux folks, finally gonna build some stuff! which tools work best for the agent to tap through, appium or agent-device?

@JI Good stuff! This is important for scaling work with coding agents.

@JI Love this. Reviewing mobile code has been the real bottleneck since agents got fast, and showing a recording first fixes that.

@DaehyeonMun @JI less goo

@JI Ok getting the full recording is cool

@JI how many simulator sessions can an agent run in parallel on 1 account?

@JI Depends on your plan! Right now it's 5 on Starter, 15 on Production, and then 20 on Enterprise, with the ability to get more. Here's a link to the pricing page: How many are you hoping to run? 👀

@JI The screen recording as proof makes code reviews so much easier.

@JI this is something I've been waiting for. definitely going to test it.

@JI This could greatly streamline the development process and improve efficiency overall

@JI can a bug-fix PR include recordings of both the original failure and the fixed flow? that would make reviewing it much easier.

@JI Let’s go

@JI if the agent runs the change on a cloud iOS simulator and brings back the recording, has that been enough for review?