Polar vs Convex

Polar

Convex

Polar · 15 features

• Customer Portal — Self-serve subscription management.
• Feature Flags — Simple flag mgmt tied to subscription tiers.
• Framework Adapters — Next.js, BetterAuth, TS, Python, Laravel, Ruby, 11+ more.
• Fraud Protection — Chargeback + fraud handling included.
• GitHub Sponsors Import — Import existing sponsors to Polar.
• Global Tax Compliance — VAT/GST/sales tax filed by Polar.
• Hosted Checkout — Polar-hosted + embeddable checkout.
• License Keys — Generate + validate license keys for software.
• Metering — Track API calls, tokens, custom units.
• One-off Purchases — Single purchases + digital downloads.
• Open-Source Backend — Full platform code on GitHub.
• Sandbox Environment — Test transactions without charging.
• Subscriptions — Tiered plans with upgrades/downgrades.
• Usage-Based Billing — Event ingestion → meter → invoice.
• Webhooks — Resource events with HMAC signatures.

Convex · 18 features

• Actions — Non-deterministic functions for external I/O (fetch, AI APIs, email). Cannot rea…
• Authentication — Convex Auth (built-in) or BYO provider (Clerk, Auth0, Kinde, WorkOS). ID tokens …
• Convex Agents — AI agent framework with durable memory, threads, tool use. Works with OpenAI / A…
• Convex Auth — First-party auth library: passwords, magic links, OAuth, phone — stored in your …
• Convex Components — Reusable backend modules (rate limiter, workflow, aggregate, action-retrier, etc…
• Cron Jobs — Recurring schedules defined in convex/crons.ts. UTC, cron-style patterns.
• Durable Workflows — Long-running multi-step workflows with retries and at-least-once guarantees.
• Exception Reporting — Auto-capture errors to Sentry, Axiom, Datadog.
• File Storage — Upload/download via storage API. Returns storage IDs referenced in documents.
• Full-Text Search — BM25 search index on table fields. withSearchIndex query helper.
• HTTP Actions — Expose public HTTP endpoints for webhooks, OAuth callbacks, third-party integrat…
• Log Streams — Stream function logs to Axiom, Datadog, Sentry. Pro+.
• Mutations — Transactional write functions. All reads + writes in one mutation are ACID; conf…
• Preview Deployments — Every Git branch gets its own isolated deployment. Integrates with Vercel/Netlif…
• Queries — Deterministic read-only TS functions. Automatically cached and re-run when under…
• Real-Time Subscriptions — useQuery auto-subscribes; server invalidates when data a query read changes. No …
• Scheduler — schedule.after / schedule.at — enqueue functions to run later. Durable, survives…
• Vector Search — Native vector index on tables. withIndex + filter fields. Up to 4096 dims.