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Software · head to head

Amplitude vs Bun

Amplitude logo

Amplitude

Software

The digital analytics platform to understand your users

From
Free
Rated
-
Full reviewWebsite
Bun logo

Bun

Software

JavaScript runtime, bundler, test runner and package manager unified in single toolchain

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Amplitude metered on event volume, so instrumenting more of a product raises the bill even if the audience does not grow; Bun linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported

Where they differ

Only the attributes on which Amplitude and Bun actually diverge.

Attributes where Amplitude and Bun differ
AttributeAmplitudeBun
Pricing modelUnknownopen-source
PlatformsWeb, Ios, Android, ApimacOS, Windows, Linux, FreeBSD, Android
Founded2012Unknown

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

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 Amplitude

  • Event tracking
  • User segmentation
  • Funnel analysis
  • Retention analysis
  • Cohort analysis
  • A/B testing
  • Revenue analytics
  • Predictive analytics

Only in Bun

Nothing recorded that Amplitude does not also cover.

What people use each for

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

Amplitude

  • User behavior analysisnot Bun
  • Feature adoption trackingnot Bun
  • Conversion rate optimizationnot Bun
  • Customer journey mappingnot Bun
  • Retention improvementnot Bun

Bun

  • High-performance JavaScript services prioritising startup time and memory efficiencynot Amplitude
  • Single-file executable deployment without Node runtime dependenciesnot Amplitude
  • Monorepo management with workspace supportnot Amplitude
  • Full-stack development with unified toolchainnot Amplitude
  • Systems programming and shell scripting with JavaScriptnot Amplitude

Where each one falls short

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

Amplitude

  • Metered on event volume, so instrumenting more of a product raises the bill even if the audience does not grow
  • The free plan covers 2M events a month
  • The Plus plan scales to 70M events, above which pricing is custom
  • Growth and Enterprise pricing is not published

Bun

  • Linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported
  • Native Node.js addons not supported directly; requires FFI workarounds for C libraries
  • Ecosystem less mature than Node.js; fewer third-party packages optimised for Bun
  • Windows support newer and less mature than Linux/macOS; occasional edge cases

Pricing, plan by plan

Amplitude

Free
  • StarterFree
    • 2 million events per month
  • Plus$49/month
    • $0.049 per MTU
    • Up to 300k MTUs
    • Advanced analytics
  • GrowthFree
    • Causal insights
    • Feature experimentation
    • Real-time streaming
  • EnterpriseFree
    • Cross-product analysis
    • Advanced permissions
    • Dedicated account manager

Bun

Free

No published plan breakdown. See the Bun review.

Which should you pick?

Choose Amplitude if

  • You need event tracking.
  • You want to start without paying.
  • You work on Web, Ios, Android, Api.
  • You also want user segmentation.
Amplitude review

Choose Bun if

  • You want to start without paying.
  • You work on macOS, Windows, Linux, FreeBSD, Android.
Bun review

Questions people ask

Is Amplitude or Bun better?
Neither clearly leads. Amplitude starts at Free and Bun at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Amplitude or Bun?
Amplitude starts at Free and Bun at Free.
Does Amplitude or Bun run on more platforms?
Amplitude runs on Web, Ios, Android, Api. Bun runs on macOS, Windows, Linux, FreeBSD, Android.
Can I use Amplitude for free?
Both have a free tier, so you can try either at no cost before committing.
What is Amplitude best used for?
Amplitude is most often used for user behavior analysis, feature adoption tracking, conversion rate optimization, customer journey mapping. Of those, user behavior analysis and feature adoption tracking are not what Bun is typically brought in for.
What can Amplitude do that Bun cannot?
Amplitude covers Event tracking, User segmentation, Funnel analysis, Retention analysis.

Answered from the vendors’ own pages

Amplitude: Does Amplitude have a free plan?

Yes, Amplitude offers a free Starter plan with 2 million events per month and access to the entire platform including analytics, session replay, and experimentation features.

Source
Amplitude: What is Amplitude's pricing based on?

Amplitude's pricing is based on the number of monthly tracked users (MTUs), data volume, and advanced features selected. The Plus plan starts at $49 per month with a rate of $0.049 per MTU.

Source
Amplitude: What analytics features does every Amplitude plan include?

Every plan includes access to the full platform: analytics, session replay, feature experimentation, web experimentation, guides and surveys, activation, and AI tools like AI Feedback and AI Assistant.

Source
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Related pages

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