OTel + Pub = Dart and Flutter Magic*
Deliver standard mobile observability without jank.
Observe apps end-to-end with an OpenTelemetry stack specialized for Dart and Flutter.
Free private pub? That's Dartastic!
* OK, it's not magic, it just looks like magic.
By the author of dartastic_opentelemetry, Dart's official OpenTelemetry SDK, currently undergoing donation to the CNCF.



The OpenTelemetry Wave

The future-proof OpenTelemetry (OTel) observability standard has created a major industry shift. OTel breaks vendor locks and reduces costs while offering interoperability. Dart is the last of OpenTelemetry's 15 target languages to get an OTel SDK. Finally, the power of OpenTelemetry is available for Dart and Flutter.
Dartastic.io is committed to stewarding the OpenTelemetry standard for Dart and Flutter. Beyond donating dartastic_opentelemetry to the CNCF, we are leading the Dart and Flutter SIG at OpenTelemetry, maintaining hundred of otel libraries, many OpenSource, to ease migration and powerful tools the makes an OTel migration a major upgrade. Dartastic maintains extensive documentation and examples for OpenTelemetry on Dart and Flutter.
Dartastic.io offers a standard native Dartastic OTel SDK that takes telemetry off the calling thread to keep apps fast while tightly integrating with underlying platforms to handle native crashes, errors and metrics.
Dartastic Observatory is an observability stack specialized for Dart and Flutter. Dartastic Observatory combines OTel, private Pub and AI to create eye-opening developer experiences including automatic PRs fixes for errors happening in production. Dartastic Hosted Observatory drastically lower costs with a new simple pricing model for large deployments - pay by the box, not by the byte. Dartastic Cloud Observatory offers low-cost quick ramp o11y.
PRO OTEL FOR FLUTTER & DART
Dartastic Native OTel SDKs
Break Heisenberg's Law — observe without affecting performance.
- Move OTel to native threads. Observability shouldn't cost you frames.
- Never Lose a Crash Native catches errors that Dart can't.
- Jank Attestation Know which widget is too busy.
- Metrics for Mobile and Server — see what your users actually feel:
- Stutters and dropped frames
- App freezes and hangs
- Memory leaks
- Crash-free sessions, per release
- Anything in iOS MetricKit
- Anything in Android Vitals
- Automatic PII scrubbing — emails, IPs, auth tokens, SSNs, credit cards redacted before they are saving in your backend.
- Safe in the Swarm Your mobile fleet backs off during OTel endpoint backpressure.
- Remotely tunable at runtime.
- Compatible with any OpenTelemetry stack. Use with Dartastic Observatory or your bring your own OTel-compliant backend.



OBSERVABILITY STACKS FOR DART AND FLUTTER
Dartastic Observatory
Observability stacks specialized for Dart and Flutter, integrated with private Dartastic Pub and Dartastic Symbolizer.
- Dashboards for Flutter apps & Dart servers - Crash Reports, Fleet Health, Janky widgets.
- Dartastic Hosted Observatory Sign up and your private dedicated box is live in 5–15 min integrated with your Private Dartastic Pub & Dartastic Symbolizer.
- Dartastic Cloud Observatory Powerful tools for Dart and Flutter on shared infrastructure, integrated with private Dartastic Pub and Dartastic Symbolizer.
- Dartastic Pub Publish and share packages on your own private infrastructure.
- Dartastic Symbolizer Resolve productions errors to source code lines on your own private infrastructure.
- Includes Dartastic OTel native packages licenses.
- Dartastic AI add-ons detect and solve problems as they occur. We don't train on your data, it's yours.
- Already on Sentry? Flip one DSN and try Dartastic Hosted Observatory — keep your
Sentry.init, reduce your bill.

YOUR PRIVATE PUB.DEV
Dartastic Pub
Pub that's private to your team, partners, and customers.
- Your own private pub for your private Dart and Flutter packages.
- Familiar pub.dev feel with new capabilities.
- Team and app management.
- Fine-grained access control with fast revocations.
- Daily backups, dual-region storage.
- Free with 100 MB, enough for dozens of packages.
- Just $4/mo for 10GB for each of your organization's members, pooled.
- Dartastic Pub uses shared infrastructure. Dartastic Pub on private infrastructure is available on Dartastic Hosted plans.
PRODUCTION ERRORS → SOURCE-CODE LINES
Dartastic Symbolizer
Dartastic Symbolizer turns production errors into actionable source-code lines, privately.
When the Native SDK detects an error it can call Dartastic Symbolizer and augment the error with its source code location. Your o11y platform gets the error with a finger pointing to a line of source code, automatically.
Debug symbols (or source maps) + your app = your source code. Uploading them to your observability vendor adds an attack surface for your IP and devops pain.
Keep your symbols where you publish packages, in Dartastic Pub, where you control who sees your IP.
E/Crash: NoSuchMethodError
at d.a.b(Unknown:0)
at d.a.c(Unknown:0)
at io.flutter.embedding...NoSuchMethodError: 'price' on null
CartItem._renderTotal
cart_item.dart:87
CartPage.build
cart_page.dart:142INSTRUMENTATION LIBRARIES
Dartastic LabsBeta
Adopt OTel without waiting for vendors.
- 650
otel_*integration packages, maintained as a consistent set to the OpenTelemetry Standard and the latest OpenTelemetry Semantic Conventions. - 50 OSS integrations on pub.dev — popular Dart and Flutter packages including shelf, dio, state-management, loggers.
- 600 Pro integrations on your private Dartastic Pub — Anthropic, OpenAI, AWS, Azure, GCP, Kafka, Okta, Stripe, Supabase and more.
- O11y vendor integrations for Sentry, Datadog, New Relic — we have ways of making them talk OTel.
+ 96 more categories
Ready to get started?
Experience the power of OpenTelemetry in your Flutter and Dart applications today.
Trusted by Developers
Hear what Flutter and Dart developers are saying about Dartastic.io
Jane Smith
Flutter Developer, XYZ Inc
"Dartastic.io has completely transformed how we monitor our Flutter apps. The automatic tracing saves us hours of debugging time."
Mark Phillips
Lead Engineer, ABC Corp
"The integration was seamless. We went from blind spots in our apps to complete visibility across our entire stack."
Alex Johnson
CTO, StartupX
"Being able to correlate front-end actions with backend services has been game-changing for our team's productivity."