a0.dev · Owned Expo after agent preview
An a0.dev project that looks finished after the AI coding agent writes React Native/Expo screens—and after one-click App Store or Google Play upload—is still a lab until you own the Expo tree, Convex or Supabase project credentials, and store signing outside a0’s agent session. Production means install → auth → core journey on binaries you can rebuild without reopening a0, secrets injected by your backend and EAS (or equivalent), and store listings you can update when a0 is unavailable. You keep the mobile UX a0 already proved; you stop treating “agent green + submitted” as the release bar.
30 min · senior team · leave with a clear next step
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CodeCross LLC frames a0-to-production as graduating an a0.dev Expo/React Native MVP from agent preview and one-click store upload to owned builds and backends. Operators pin Convex or Supabase credentials, App Store Connect / Play Console access, and signing to org accounts, then prove device journeys without the a0 agent session. Done when a clean Expo checkout ships and store updates no longer require a0’s publish button.
What a0 web preview and one-click upload hide
a0.dev compresses prompt-to-device into chat, web preview, and Generate & Submit. Real testers expose camera and payments that never ran on react-native-web, Convex or Supabase keys that only exist in the agent session, and a store listing that only updates while someone still has a0 open.
Camera, biometrics, push, and IAP need an IPA/APK or the a0 app / Expo Go. Treating web preview as store-ready hides the first crash on a real device.
If Convex or Supabase credentials rotate only by reopening a0, closing the chat orphans TestFlight and Play clients already installed.
One-click App Store Connect Deployment proves a0 can ship a binary. It does not prove a second engineer can sign with org credentials when a0 is down.
Build Settings runtime must match the shipped binary. An OTA that assumes a0’s preview chrome will brick clients after the first store cutover.
The Expo-ownership pass we actually run
Keep the screens the agent already sold. Move ship authority to an Expo tree and store consoles you name. a0 remains a prompt workshop until device journeys succeed with the chat closed.
01
Pin Expo SDK and lockfiles. A teammate who never opened a0 can install and run a local or EAS profile. Document which Convex vs Supabase project the agent wired.
02
Copy secret names, mint fresh values, and stop treating agent history as the vault. Preview defaults stay off production tracks.
03
App Store Connect Deployment and Play Console live under company accounts. Dual-allow a0-managed upload only during the cutover window.
04
Deep links and payments fail closed when env is wrong. If those hold with the a0 agent closed, the mobile UX stays; one-click publish is optional.
How to
Owned Expo checkout, Convex or Supabase admin, and store credentials. Success is the primary device journey completing after you close the a0 agent.
Step 01
Keep the Expo screens if they still match what operators will buy. Do not treat a green react-native-web panel or Generate & Submit as durable ownership.
Step 02
Record runtime version so OTA stays compatible. Document which screens only worked in the a0 app or Expo Go versus web preview.
Step 03
Mint new values. Split sandbox from production. Never leave production keys only in agent message history.
Step 04
Align Bundle ID and Team ID. Prefer EAS (or equivalent) when rollback and second-engineer binaries matter. Write down which model production uses.
Step 05
Confirm IAP fails closed when store/env credentials are wrong. Closing the a0 agent must not stop updates or crash the live backend.
Read next
These pages are already on the site. Use them to pressure-test the bet before a call.
Production-ready checklist
Tool-agnostic ship gate this a0.dev Expo origin still has to meet.
a0.dev MVP hardening
Seal agent secrets and store privacy before you buy traffic onto a public listing.
Auth and data checklist
Session and Convex/Supabase access after you leave the a0 agent session.
App Store / Play ready
Signing, compliance labels, and crash soak before review.
Proof dashboard
Named charts and methodology for the headline numbers.
Book a discovery call
Thirty minutes with a senior teammate. Honest next steps.
Verified on Clutch · 29 reviews
“What impressed us most about CodeCross was their ability to deeply understand our vision and translate it into a complete digital solution. Unlike many agencies that just focus on technical delivery, CodeCross approached our project like true partners.”
Harris Edelmam
CEO · Ombligo, Inc.
Read on Clutch“Their project management was top-notch.”
Greg Moreno Earle
Technology Executive · Driven Brands Inc.
Read on Clutch“Their eye for clean, modern design combined with technical excellence was very impressive.”
Robert Valentino
Founder · Lean Coach
Read on Clutch“We appreciated Codecross's practiced approach to development.”
Brice Wiley
Marketing Director · Lex Mundi
Read on Clutch“On the development side, everything has gone quite smoothly and perfectly.”
Brandon Patterson
Co-Owner · Cap Tech Services, LLC.
Read on Clutch“They are very thorough in their approach to the project.”
Lukas Haynes
Member Board of Directors · Protect Our Winters Action Fund
Read on ClutchInternals
Stay inside the vibe-coding cluster, or open booking and the Austin money page.
Continue
Shared intents and the rest of the a0.dev pack.
Continue
When the job is leaving a0 as the release plane, not scoring the last Generate & Submit.
Continue
Keep agent rhythm while store and backend ownership move to org seats.
Continue
Expo extract when the tree must boot as standard mobile CI.
Continue
Bring the a0.dev project and the journey web preview already sold.
Continue
Named charts and methodology behind the headline numbers.
Continue
Studio page if you want a partner on the a0.dev Expo handoff.
Before you book
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No. One-click publish proves a0 can build, create or update a listing, and upload on your behalf. Ownership means you can reproduce the Expo project from source, sign with org credentials, and ship a hotfix without the a0 agent. Until then, store presence is convenience—not a durable release plane.
Auth, data writes, and any built-in AI inference routes must succeed with destination secrets on a backend project your org administers. If schemas, RLS, or API keys only exist inside a0’s session context, closing a0 orphans the mobile clients already in TestFlight or Play. Document which backend a0 wired and who can rotate it.
Prefer a0-managed upload while store-iteration risk is acceptable and you explicitly budget platform lock-in. Prefer EAS (or equivalent) plus org App Store Connect / Play Console when rollback, second-engineer binaries, and vendor reviews matter. Write down which model production uses before a launch spike discovers only a0’s button works.
Install a binary from your pipeline (not only a0 preview), complete signup/session, exercise write paths against the owned backend, and confirm IAP or subscription wiring fails closed when store/env credentials are wrong. Closing the a0 agent must not stop updates or crash the live backend. If those hold, a0-shaped UX stays; control has matured past one-click publish.
Bring the Expo checkout and the store-listing story. We will say whether this week is an owned binary — or another agent session pretending to be production.
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