Sentry vs Supabase
Both are developer tools. Here is what separates them.
What Sentry is
Sentry captures application errors and performance data from code running in production. An error report includes a stack trace that shows the values of local variables at each frame, so the state that produced the failure is visible without reproducing it locally, and breadcrumbs record the sequence of events that led up to it. Distributed tracing links a single request across every service and function call it touches, with the SDK sampling rate set through tracesSampleRate. From that data Sentry detects performance problems on its own, including N plus 1 queries, slow database calls and uncompressed assets. Logs can be filtered on structured attributes such as a customer id rather than by matching raw strings. Session Replay covers web frameworks and mobile through React Native, Android, iOS and Flutter, and flags rage clicks and dead clicks where a user taps an element that does not respond. It masks all text, inputs and media by default before a recording leaves the user's browser. Release Health reports crash free session rates, adoption per version and failure rate. SDKs cover JavaScript, Python, Java, Kotlin, PHP, Ruby, Go, Rust, Elixir, Perl, Scala, .NET and native C and C++, along with mobile and game platforms including Android, Apple, React Native, Flutter, Unity, Unreal Engine and Godot. Sentry integrates with GitHub, Jira and Slack, and can assign a new issue automatically to the developer whose commit introduced it. The free Developer plan is limited to a single user seat and includes 5,000 errors, 5 million spans, 50 session replays, 5GB of logs, 5GB of application metrics, one uptime monitor, one cron monitor, 1GB of attachments and 10 custom dashboards, with a 30 day lookback on data. The Team plan costs $26 per month on annual billing, places no limit on seats, raises the error allowance to 50,000 and extends retention to a 90 day lookback. The Business plan costs $80 per month on annual billing and adds unlimited custom dashboards and 1,000 metric monitors, against 20 on Team. Enterprise is quoted individually with custom quotas on every dimension. Usage above an allowance is charged separately: logs and application metrics beyond the included 5GB cost $0.50 per additional GB, extra uptime monitors $1.00 each and extra cron monitors $0.78 each.
What Supabase is
Supabase is an open source backend for web and mobile applications, built around Postgres. Every project gets a dedicated Postgres database, and the rest of the platform is a set of services attached to it rather than a layer that hides it. That decision is the reason to choose it. The database is a real Postgres instance, so SQL, extensions and the wider Postgres ecosystem all work as they normally do, and there is a SQL editor for running queries and mutations directly. REST and GraphQL APIs are generated automatically from the schema, the GraphQL side through a Postgres extension, so an API exists the moment a table does. Auth handles email and password, phone and one-time codes, magic links for passwordless sign-in, and more than twenty social login providers. Access control is enforced with Postgres row-level security policies, which means the rules about who can read which row live in the database rather than in application code that has to remember to apply them. Authentication flows can be extended with serverless functions. Storage is S3-compatible object storage behind a global CDN spanning more than 285 cities, with image transformations available on the way out. Edge Functions are TypeScript on Deno with Node.js compatibility, deployed close to users. Realtime synchronises over WebSockets and covers three distinct cases: listening to database changes, tracking presence so an application knows who is online, and broadcasting messages between clients. For applications that need semantic search or retrieval, the AI toolkit is built on pgvector, storing, indexing and querying embeddings in the same database as everything else rather than in a separate service. There are integrations with OpenAI and Hugging Face, and client libraries make it straightforward to use from JavaScript applications. All the core tools are open source and self-hostable. The hosted platform is free to start on, which makes the practical difference: a project can begin on the managed service and move onto its own infrastructure later without changing the database it was built on.
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