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Mobile Development · head to head

Flutter vs Expo

Flutter logo

Flutter

Mobile Development

Google’s open-source framework for building apps from one codebase

From
Free
Rated
-
Full reviewWebsite
Expo logo

Expo

Mobile Development

React Native framework and cloud platform for building and shipping apps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Flutter dart is used almost nowhere else, so the language itself is a hiring and learning cost; Expo free tier build counts and MAU support are low, pushing active projects to paid plans quickly.
  • They diverge on capability: Flutter covers Single codebase, many targets, Expo covers Expo SDK.

Where they differ

Only the attributes on which Flutter and Expo actually diverge.

Attributes where Flutter and Expo differ
AttributeFlutterExpo
Pricing modelOpen source, no licence feefreemium
PlatformsiOS, Android, Web, Windows, macOS, Linuxweb, ios, android, api

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

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 Flutter

  • Single codebase, many targets
  • Own rendering engine
  • Hot reload
  • Widget library
  • Ahead-of-time compilation
  • DevTools

Only in Expo

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

What people use each for

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

Flutter

  • Shipping one app to iOS and Android with a small teamnot Expo
  • Interfaces with heavy custom design that need to look identical on both platformsnot Expo
  • Adding web or desktop builds to an existing mobile codebasenot Expo
  • Prototyping quickly where hot reload shortens the design loopnot Expo

Expo

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

Where each one falls short

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

Flutter

  • Dart is used almost nowhere else, so the language itself is a hiring and learning cost
  • Because Flutter draws its own widgets, apps can feel subtly unlike the platform unless deliberately styled per-platform
  • Binary sizes are larger than equivalent native apps because the engine ships with the app
  • Access to a brand-new platform API waits on a plugin, or on writing platform channel code yourself

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.

Pricing, plan by plan

Flutter

Free
  • FlutterFree
    • Full framework
    • All platform targets
    • Dart toolchain

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

Which should you pick?

Choose Flutter if

  • You need single codebase, many targets.
  • You want to start without paying.
  • You work on iOS, Android, Web, Windows, macOS, Linux.
  • You also want own rendering engine.
Flutter review

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

Questions people ask

Is Flutter or Expo better?
Neither clearly leads. Flutter starts at Free and Expo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flutter or Expo?
Flutter starts at Free and Expo at Free.
Does Flutter or Expo run on more platforms?
Flutter runs on iOS, Android, Web, Windows, macOS, Linux. Expo runs on web, ios, android, api.
Can I use Flutter for free?
Both have a free tier, so you can try either at no cost before committing.
What is Flutter best used for?
Flutter is most often used for shipping one app to ios and android with a small team, interfaces with heavy custom design that need to look identical on both platforms, adding web or desktop builds to an existing mobile codebase, prototyping quickly where hot reload shortens the design loop. Of those, shipping one app to ios and android with a small team and interfaces with heavy custom design that need to look identical on both platforms are not what Expo is typically brought in for.
What can Flutter do that Expo cannot?
Flutter covers Single codebase, many targets, Own rendering engine, Hot reload, Widget library. Expo covers Expo SDK, EAS Build, EAS Submit, EAS Update.

Answered from the vendors’ own pages

Flutter: Is Flutter free?

Yes. Flutter is open source with no licence fee. The framework is under a Creative Commons Attribution 4.0 licence and its code samples under the 3-Clause BSD licence.

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
Flutter: What language does Flutter use?

Dart, a language Google designed for fast startup and ahead-of-time compilation to native code.

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
Flutter: Can Flutter build for more than mobile?

Yes. The same codebase targets iOS, Android, web, Windows, macOS, Linux and embedded devices, though mobile remains the most mature target.

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
Flutter: How is Flutter different from React Native?

Flutter draws its own widgets with its own engine, so the result is pixel-identical across platforms. React Native renders to the real native components of each platform. Flutter uses Dart; React Native uses JavaScript and React.

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