Devin adds cloud Mac sandboxes for Xcode and iOS app testing

• Cognition has moved Mac execution into a one-click native sandbox after customers had been stitching together Mac emulators, according to imjaredz's announcement.
• The Mac VM exposes Xcode and the iOS Simulator, and Cognition's Mac announcement says Devin can return a screen recording through Slack and a TestFlight link.
• A week of dabit3's experiment thread spans 11 native-app builds, while dabit3's code collection offers source for those apps plus more than 100 additional examples.
• The scope claim is deliberately broad: dabit3's reply says the environment can do anything a Mac can do.

An image-editor demo from dabit3 has Devin upload a file, modify it, download it, and verify every action. Cognition's Mac announcement names a screen recording and TestFlight invite as the handoff artifacts after an agent run.

Cognition says customers previously had to assemble Mac emulators, while the new environment is native to Devin and launches with one click. The company also calls it the first cloud agent with macOS sandboxes.

Asked whether the setup still depended on another service, dabit3's reply said it is now native to Devin. The public post does not attach a supported-version matrix to the claim that it can do anything a Mac can do.

The agent can use Xcode, boot an iOS Simulator, and operate the GUI through computer use. That gives the run a path to validate a native interaction after compilation.

The same experiment is specific about the interaction loop: upload an image, change it in the app, download it again, and verify the result. That is a more demanding target than producing an IPA or a passing build log.

dabit3's experiment thread lists these 11 cloud-built and tested projects:

1. A multiplayer app across iOS, iPad, and web.
2. A native iOS image editor.
3. A multiplayer native iOS game.
4. A native macOS video editor.
5. A native iOS AI chat client.
6. A macOS CSV-to-chart app with exportable graphics.
7. An iPad 3D design and sculpting app.
8. Multiplayer, multi-platform chess.
9. A simultaneous native iOS and web multiplayer app.
10. A multiplayer native iOS fighting game.
11. A native iOS pocket drum machine.

The code collection promises the code for these projects and more than 100 additional native-app examples.

Cognition describes the delivery sequence as three explicit steps:

1. Build and test an app on the Mac VM with the iOS Simulator.
2. Send a screen recording through Slack.
3. Send a TestFlight link.

The early reaction was predictably loud. DevinAI called the new Mac “smooth,” while AlemTuzlak's post called it one of the team's biggest shipped features.

The native sandbox announcement follows Cognition's July Outposts launch, which introduced named queues that dispatch Devin sessions to machines an organization operates. The Outposts documentation draws the execution boundary clearly: inference and planning remain in Devin's cloud, while commands, file edits, and repository access run on the selected machine.

For the earlier macOS route, Namespace's launch-partner writeup says its Devboxes could provide macOS hardware, a customer image, and internal-network access; it identifies Apple's M5 chip for that Mac configuration. Those Outposts details describe a separately documented deployment path from the new native-sandbox claim.