leas vs EAS Build: a self-hosted Expo EAS alternative
leas is an open-source, self-hosted alternative to Expo Application Services (EAS) for teams that want to build, sign, submit, and update Expo or React Native apps on infrastructure they control. It is not a copy of Expo’s hosted platform. It automates the same mobile release outcomes while leaving the machines, signing credentials, and CI account under your control.
Choose EAS when you want the simplest managed service and do not want to operate build infrastructure. Choose leas when credential custody, local execution, predictable cost, or running inside your own GitHub account matters more than having Expo operate the fleet for you.
Can you build an Expo app without EAS?
Yes. Expo projects can be generated into native iOS and Android projects with npx expo prebuild and compiled with the native toolchains. You can automate that process yourself, or use leas to automate building, signing, submission, and over-the-air updates without using EAS Build.
npm install --save-dev leas-cli npx leas doctor npx leas build --platform all --profile production --auto-submitleas compared with Expo EAS
| Decision | leas | Expo EAS |
|---|---|---|
| Operating model | Self-hosted engine on your machine or your CI runners | Managed services and Expo-operated build infrastructure |
| Account required | No leas or Expo account for the open-source pipeline | An Expo account or token is required for EAS commands, including local EAS builds |
| Signing-key custody | Your files or your repository secrets; leas.dev has no key-upload endpoint | Expo can manage credentials, or local credentials can be supplied by the team |
| Local builds | The primary code path; local and cloud run the same engine | Supported with eas build --local, subject to documented limitations |
| Cloud builds | Run in your GitHub Actions account or another fleet you operate | Run on Expo’s managed fleet |
| Store submission | App Store Connect and Google Play submission are included | EAS Submit is included in the EAS product family |
| OTA updates | Self-hosted implementation of the Expo Updates protocol | EAS Update is hosted and managed by Expo |
| Pipeline pricing | MIT-licensed engine; you pay only for hardware or CI you choose | Managed-service plans and usage limits; verify current terms with Expo |
What leas replaces, and what it does not
leas provides alternatives for EAS Build, EAS Submit, EAS Update, and build workflows. It also adds preflight checks through leas doctor and credential-expiry reporting through leas creds. It is not presented as an alternative to every Expo service. Expo Hosting, product analytics, and Expo’s managed support organization are different products and are not replaced by the open-source CLI.
When EAS is the better choice
EAS should be the first choice when your team wants managed credentials, does not own or want to operate Apple hardware, prefers a vendor-operated queue and dashboard, or values Expo support more than infrastructure control. EAS is a mature managed platform. leas is the narrower choice for teams that specifically want to own the release pipeline.
Primary sources
This comparison uses Expo’s current documentation for statements about EAS and the public leas source and package for statements about leas. Product behavior changes; use the linked first-party sources for the current details.
- Expo Application Services overview
- Expo EAS local-build reference
- Expo development-build options
- leas source code
- leas-cli package
If the question you actually have is narrower — whether an Expo account is required to build and ship at all — that is answered separately in No account required, which quotes Expo’s own documentation on the point and names the cases where an account is genuinely needed.
Last reviewed 26 August 2026. If an Expo behavior described here has changed, the Expo documentation controls and this comparison should be corrected.