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Developer Tools · head to head

GNAT Pro vs Sentry

GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Free plan
No
Full reviewWebsite
Sentry logo

Sentry

Technology

Application monitoring platform built by developers for developers

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Sentry has a free tier, so it costs nothing to try first.
  • Each has a real cost: GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes; Sentry spending caps stop event ingestion when reached, eliminating visibility during critical moments
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which GNAT Pro and Sentry actually diverge.

Attributes where GNAT Pro and Sentry differ
AttributeGNAT ProSentry
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWebWeb, iOS, Android, React Native, Desktop, 30+ frameworks and languages
CategoryDeveloper ToolsTechnology
FoundedUnknown2011

Identical on both: 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 GNAT Pro

Nothing recorded that Sentry does not also cover.

Only in Sentry

  • Error tracking
  • Performance monitoring
  • Release tracking
  • Real user monitoring
  • Alerting
  • Issue assignment
  • Breadcrumbs
  • Source maps

What people use each for

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

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot Sentry
  • Developing automotive embedded systems with ISO-26262 compliancenot Sentry
  • Integrating Ada, C/C++, and Rust components in single codebasenot Sentry
  • Managing software supply chain vulnerabilities and SBOMsnot Sentry
  • Supporting long-lived software systems spanning decadesnot Sentry

Sentry

  • Error monitoringnot GNAT Pro
  • Performance trackingnot GNAT Pro
  • Debug production issuesnot GNAT Pro
  • Release managementnot GNAT Pro
  • User monitoringnot GNAT Pro

Where each one falls short

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

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

Sentry

  • Spending caps stop event ingestion when reached, eliminating visibility during critical moments
  • Complex configuration required for filters, sampling rules, issue grouping, and alert policies
  • Difficult to configure custom alerts and alert content without creating email inbox bloat
  • Error grouping is imperfect with noise and filtering issues causing incorrect error prioritization
  • Weak for distributed tracing across microservices compared to dedicated APM tools
  • UI dashboard is less customizable than alternatives like Datadog APM for complex monitoring needs

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Sentry

Free
  • Developer (Free)Free
    • 5K errors per month
    • 1 user seat
    • 30-day data retention
  • Team$26/month
    • 50K errors per month
    • 5M transaction spans
    • 90-day data retention
  • Business$80/month
    • Higher quotas
    • Extended retention
    • Advanced filtering
  • Organization$199/month
    • SSO integration
    • Audit logs
    • Advanced security

Which should you pick?

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from Sentry on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Choose Sentry if

  • You need error tracking.
  • You want to start without paying.
  • You work on Web, iOS, Android, React Native, Desktop, 30+ frameworks and languages.
  • You also want performance monitoring.
Sentry review

Questions people ask

Is GNAT Pro or Sentry better?
Neither clearly leads. GNAT Pro starts at On request and Sentry at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Sentry?
Sentry has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Sentry.
Does GNAT Pro or Sentry run on more platforms?
GNAT Pro runs on Web. Sentry runs on Web, iOS, Android, React Native, Desktop, 30+ frameworks and languages.
Can I use Sentry for free?
Yes. Sentry has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is GNAT Pro best used for?
GNAT Pro is most often used for building certified avionics software meeting do-178b/c standards, developing automotive embedded systems with iso-26262 compliance, integrating ada, c/c++, and rust components in single codebase, managing software supply chain vulnerabilities and sboms. Of those, building certified avionics software meeting do-178b/c standards and developing automotive embedded systems with iso-26262 compliance are not what Sentry is typically brought in for.
What can GNAT Pro do that Sentry cannot?
Sentry covers Error tracking, Performance monitoring, Release tracking, Real user monitoring.

Answered from the vendors’ own pages

GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
Sentry: Does Sentry have a free tier?

Yes. The free Developer tier includes 5,000 errors per month, one user seat, 30-day retention, and 50 session replays per month.

Source
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
Sentry: How much do Sentry's paid plans cost?

Team plan starts at $26/month (annual) or $29/month (monthly) with 50K errors and 5M spans included. Business plan is $80-89/month. Organization plans start at $199/month with SSO and advanced compliance features.

Source
Sentry: What programming languages does Sentry support?

Sentry supports over 30 languages and frameworks including JavaScript, Python, Go, Ruby, Java, .NET, PHP, Node.js, and mobile platforms including iOS, Android, and React Native.

Source
Sentry: Does Sentry support self-hosting?

Yes. Sentry can be self-hosted, and the open-source version is available for deployment in on-premises environments.

Source
Sentry: How does Sentry billing work if I exceed my quota?

Sentry offers spending caps that stop ingestion when reached, meaning you lose visibility exactly when you need it most. You can pre-purchase reserved capacity at 20% discount or pay per event on-demand when exceeding included allotment.

Source
Sentry: What integrations does Sentry support?

Sentry integrates with GitHub, GitLab, Jira, Slack, PagerDuty, most CI/CD pipelines, and many other developer tools.

Source
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