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Mobile Development · head to head

Expo vs Nixpacks

Expo logo

Expo

Mobile Development

React Native framework and cloud platform for building and shipping apps

From
Free
Rated
-
Full reviewWebsite
Nixpacks logo

Nixpacks

Developer Tools

Build system that turns a source directory into an OCI image, now in maintenance mode

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Expo free tier build counts and MAU support are low, pushing active projects to paid plans quickly.; Nixpacks the project is in maintenance mode with no commits on the default branch since May 2026 and no release since October 2025, so support for new language versions arrives only if someone forks it.
  • They diverge on capability: Expo covers Expo SDK, Nixpacks covers Automatic language detection.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Expo and Nixpacks actually diverge.

Attributes where Expo and Nixpacks differ
AttributeExpoNixpacks
Pricing modelfreemiumOpen source, no licence fee
Platformsweb, ios, android, apiLinux, macOS, CLI, Docker
CategoryMobile DevelopmentDeveloper Tools

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Expo

  • Expo SDK
  • EAS Build
  • EAS Submit
  • EAS Update
  • Expo Router
  • EAS Hosting
  • EAS Insights

Only in Nixpacks

  • Automatic language detection
  • No Dockerfile required
  • Nix toolchains
  • Configuration escape hatches
  • Docker layer caching

What people use each for

The jobs each tool is most often brought in to do.

Expo

  • Building cross-platform apps with React Native without native toolingnot Nixpacks
  • Running cloud builds and store submissions via EASnot Nixpacks
  • Shipping over-the-air updates to bypass app store reviewnot Nixpacks
  • Adding file-based navigation with Expo Routernot Nixpacks
  • Hosting companion web apps and APIsnot Nixpacks

Nixpacks

  • Understanding the build behaviour of a platform that adopted Nixpacks before it was frozennot Expo
  • Producing container images from a polyglot monorepo where nobody wants to own several Dockerfilesnot Expo
  • Reproducing an existing Railway build locally while planning a migration to Railpacknot Expo
  • Comparing what a Nix based builder does differently from a buildpack before choosing a successornot Expo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Expo

  • Free tier build counts and MAU support are low, pushing active projects to paid plans quickly.
  • Usage-based overage charges for builds, CI/CD minutes, and MAUs can make costs less predictable.
  • Concurrent build limits on lower tiers slow down teams with frequent releases.
  • Some native functionality still requires ejecting to bare workflow or writing custom native modules.

Nixpacks

  • The project is in maintenance mode with no commits on the default branch since May 2026 and no release since October 2025, so support for new language versions arrives only if someone forks it.
  • Build determinism is softer than it appears, because providers pin a nixpkgs archive commit and bumping that archive silently moves compiler and runtime versions underneath a build that looks unchanged.
  • Caching is limited to Docker layers rather than a content addressed graph, so a small change early in the build invalidates everything after it, which is exactly the limitation Railpack was rewritten to fix.
  • Images carry Nix store layers and come out larger than an equivalent tuned Dockerfile or buildpack output, which costs registry storage and slows cold pulls on scale-out.
  • There is no specification, no vendor neutral governance and no third party provider ecosystem, so a single company was able to redirect strategy and leave every downstream user with a frozen build tool.

Pricing, plan by plan

Expo

Free
  • FreeFree
    • 15 Android and 15 iOS builds
    • Low-priority build queue
    • 60 minutes of CI/CD workflows
  • Starter$19/month
    • $45 build credit included
    • High-priority queue and large workers
    • 3,000 MAUs for updates
  • Production$199/month
    • $225 build credit included
    • 2 concurrent builds
    • 50,000 MAU support
  • Enterprise$undefined/month
    • $1,000 build credit included
    • 5 concurrent builds
    • 1M+ MAU support

Nixpacks

Free
  • NixpacksFree
    • MIT licensed, no usage limits
    • No commercial edition and no support contract
    • In maintenance mode, superseded by Railpack

Which should you pick?

Choose Expo if

  • You need expo sdk.
  • You want to start without paying.
  • You work on web, ios, android, api.
  • You also want eas build.
Expo review

Choose Nixpacks if

  • You need automatic language detection.
  • You want to start without paying.
  • You work on Linux, macOS, CLI, Docker.
  • You also want no dockerfile required.
Nixpacks review

Questions people ask

Is Expo or Nixpacks better?
Neither clearly leads. Expo starts at Free and Nixpacks at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Expo or Nixpacks?
Expo starts at Free and Nixpacks at Free.
Does Expo or Nixpacks run on more platforms?
Expo runs on web, ios, android, api. Nixpacks runs on Linux, macOS, CLI, Docker.
Can I use Expo for free?
Both have a free tier, so you can try either at no cost before committing.
What is Expo best used for?
Expo is most often used for building cross-platform apps with react native without native tooling, running cloud builds and store submissions via eas, shipping over-the-air updates to bypass app store review, adding file-based navigation with expo router. Of those, building cross-platform apps with react native without native tooling and running cloud builds and store submissions via eas are not what Nixpacks is typically brought in for.
What can Expo do that Nixpacks cannot?
Expo covers Expo SDK, EAS Build, EAS Submit, EAS Update. Nixpacks covers Automatic language detection, No Dockerfile required, Nix toolchains, Configuration escape hatches.

Answered from the vendors’ own pages

Expo: What does Expo cost?

Expo offers a free plan, a Starter plan at $19/month with $45 build credit, a Production plan at $199/month with $225 build credit, and custom Enterprise pricing.

Source
Nixpacks: Should I start a new project on Nixpacks?

No. The documentation and README both say it is in maintenance mode and recommend Railpack. Choose Railpack, Cloud Native Buildpacks or a Dockerfile instead.

Expo: Is there a free plan, and what are its limits?

The Free plan includes 15 Android and 15 iOS builds, low-priority build queue access, 60 minutes of CI/CD workflows, and support for 1,000 monthly active users on updates.

Source
Nixpacks: Will my existing Nixpacks builds stop working?

Not immediately. Pinned nixpkgs archives keep resolving, so builds continue. What you lose is support for new runtime major versions and any fix for a provider bug.

Expo: How is usage metered on paid plans?

Beyond included build credit, Expo charges per build by platform and worker size, per CI/CD workflow minute, per million Observe events, and graduated per-MAU overage rates for updates.

Source
Nixpacks: What replaces it?

Railpack, also from Railway and also MIT licensed, rebuilt as a BuildKit custom frontend for finer grained caching and parallel steps.

Nixpacks: Is it still open source?

Yes, MIT, and the repository is not archived. Being open source does not help much when nobody is merging provider updates.

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