Staxly

Amplitude vs Convex

Digital analytics + experimentation + CDP
vs. The reactive database where queries are TypeScript code

Amplitude websiteConvex website

Pricing tiers

Amplitude

Starter (Free)
10K Monthly Tracked Users, 10M events/mo. Session Replay + unlimited feature flags + Web Experimentation + AI Feedback included.
Free
Plus
$49/mo (annual). Up to 300K MTUs + 25M events. Unlimited product analytics, behavioral cohorts, feature tagging, custom audiences.
$49/mo
Growth
Custom. Causal insights, Feature Experimentation, real-time streaming, predictive audiences.
Custom
Enterprise
Custom. Cross-product analysis, advanced data controls, mutual exclusion groups, multi-armed bandit.
Custom
Amplitude website

Convex

Starter (Free)
Free with overage via usage-based billing. Great for prototypes.
Free
Professional
$25/developer/month. Overage: $2/M function calls. Daily backups, email support, custom domains.
$25/mo
Business / Enterprise
From $2,500/month. SAML/SSO, SLA, dedicated deployments, Slack Connect support.
$2500/mo
Convex website

Free-tier quotas head-to-head

Comparing starter on Amplitude vs starter on Convex.

MetricAmplitudeConvex
db storage gb0.5 GB
deployments40 deployments
egress gb month1 GB/month
file storage gb1 GB
function calls month1000000 calls/month
team members6 users

Features

Amplitude · 13 features

  • AI Feedback (Asking)Natural language questions over your Amplitude data.
  • Amplitude CDPCustomer Data Platform — identify, segment, sync to 150+ destinations.
  • Causal InsightsAI identifies why a metric changed — root cause.
  • Cross-Product AnalysisAnalyze across multiple apps/products in the same org.
  • Data GovernanceTaxonomies, schemas, approvals, category management.
  • Data Warehouse SyncSync data to/from Snowflake, BigQuery, Redshift, Databricks.
  • Feature ExperimentationServer-side / SDK-level experiments. Growth+.
  • Feature FlagsTargeting rules + rollouts. Unlimited in Starter.
  • North Star MetricPre-built dashboards for key metric tracking.
  • Predictive AudiencesML-based forecasting of user behavior.
  • Product AnalyticsCore events + funnels + retention + segmentation.
  • Session ReplayPixel-perfect user session recording + privacy masking.
  • Web ExperimentationA/B test visual changes on your site without deploy.

Convex · 18 features

  • ActionsNon-deterministic functions for external I/O (fetch, AI APIs, email). Cannot rea
  • AuthenticationConvex Auth (built-in) or BYO provider (Clerk, Auth0, Kinde, WorkOS). ID tokens
  • Convex AgentsAI agent framework with durable memory, threads, tool use. Works with OpenAI / A
  • Convex AuthFirst-party auth library: passwords, magic links, OAuth, phone — stored in your
  • Convex ComponentsReusable backend modules (rate limiter, workflow, aggregate, action-retrier, etc
  • Cron JobsRecurring schedules defined in convex/crons.ts. UTC, cron-style patterns.
  • Durable WorkflowsLong-running multi-step workflows with retries and at-least-once guarantees.
  • Exception ReportingAuto-capture errors to Sentry, Axiom, Datadog.
  • File StorageUpload/download via storage API. Returns storage IDs referenced in documents.
  • Full-Text SearchBM25 search index on table fields. withSearchIndex query helper.
  • HTTP ActionsExpose public HTTP endpoints for webhooks, OAuth callbacks, third-party integrat
  • Log StreamsStream function logs to Axiom, Datadog, Sentry. Pro+.
  • MutationsTransactional write functions. All reads + writes in one mutation are ACID; conf
  • Preview DeploymentsEvery Git branch gets its own isolated deployment. Integrates with Vercel/Netlif
  • QueriesDeterministic read-only TS functions. Automatically cached and re-run when under
  • Real-Time SubscriptionsuseQuery auto-subscribes; server invalidates when data a query read changes. No
  • Schedulerschedule.after / schedule.at — enqueue functions to run later. Durable, survives
  • Vector SearchNative vector index on tables. withIndex + filter fields. Up to 4096 dims.

Developer interfaces

KindAmplitudeConvex
CLIConvex CLI
SDKamplitude-analytics-python, @amplitude/analytics-react-native, amplitude-android, amplitude-js / browser-sdk, amplitude-node, AmplitudeSwift (iOS)Android / Kotlin Client, iOS / Swift Client, JavaScript/TypeScript Client, Next.js Integration, Python Client, React Client (useQuery), Rust Client, Svelte Client, Vue Client
RESTAmplitude HTTP API v2, Batch Event API, Export APIDeploy / Dashboard API, HTTP Actions
OTHERData Destinations (webhooks)WebSocket Subscriptions
Staxly is an independent catalog of developer platforms. Outbound links to Amplitude and Convex are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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