Knock vs Render
Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
vs. Unified cloud for apps, databases, and static sites
Pricing tiers
Knock
Developer
Free forever. 10K messages, 500 guide users, 500 AI credits/month.
$0 base (usage-based)
Starter
$250/mo. 50K messages, 2.5K guide users, 2K AI credits. Remove branding.
$250/mo
Enterprise
Custom pricing. White-label, i18n, data warehouse, Datadog, SCIM, SAML, HIPAA/BAA.
Custom
Render
Postgres — Free
30-day limit. 256 MB RAM, 0.1 CPU, 1 GB storage. Rotates.
Free
Hobby (Free)
Free workspace. 1 project, 2 envs, 100 GB bandwidth. Includes free Web Services + static sites + dev DB.
Free
Key Value (Redis) — Free
25 MB. Ephemeral.
Free
Web Service — Free
Free (spins down with idle). 512 MB RAM, 0.1 CPU.
Free
Postgres — Basic
256 MB RAM, 0.1 CPU. Always-on.
$6/mo
Web Service — Starter
Always-on. 512 MB RAM, 0.5 CPU.
$7/mo
Key Value — Starter
256 MB RAM.
$10/mo
Professional
$19/user/month. Unlimited projects, 500 GB bandwidth, up to 10 team members.
$19/mo
Web Service — Standard
Always-on. 2 GB RAM, 1 CPU.
$25/mo
Organization
$29/user/month. Unlimited members, 1 TB bandwidth, compliance certs.
$29/mo
Postgres — Pro
4 GB RAM, 1 CPU.
$55/mo
Web Service — Pro
Always-on. 4 GB RAM, 2 CPU.
$85/mo
Web Service — Pro Plus
Always-on. 8 GB RAM, 4 CPU.
$175/mo
Enterprise
Custom. Centralized team management, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing starter on Knock vs hobby on Render.
| Metric | Knock | Render |
|---|---|---|
| guide users | 2500 users | — |
| guide users overage | $0.05/user USD/user | — |
| messages monthly | 50000 messages/mo | — |
| messages overage | $0.005/message USD/message | — |
Features
Knock · 13 features
- AI Agents — Autonomous notification drafting & workflow generation.
- Batch + Digest — Group notifications into digests on schedule or window.
- Chat — Slack, Microsoft Teams, Discord.
- Email — Send via SendGrid/Postmark/Resend/Mailgun/AWS SES as relays.
- Guides — In-product messaging, announcements, modals, banners.
- i18n / Localization — Translate templates by user locale.
- In-App Feed — Notification inbox with React/Vue/iOS/Android drop-in components.
- Multi-tenancy — Per-tenant branding, preferences, quiet hours.
- Outbound Webhooks — Subscribe to delivery events.
- Preferences — User + tenant preference center with granular controls.
- Push — iOS (APNs), Android (FCM), Expo, Web Push.
- SMS — Twilio, MessageBird, Telnyx, Vonage as providers.
- Workflows — Visual notification orchestration (branch, batch, delay, throttle).
Render · 13 features
- Autoscaling — Metric-based autoscale of instances.
- Background Workers — Process queue workers. No HTTP entrypoint.
- Blueprints (render.yaml) — Infrastructure-as-code config for all services.
- Cron Jobs — Scheduled Docker jobs.
- Custom Domains — Free SSL, automatic cert renewal.
- DDoS Protection — Built-in.
- Persistent Disks — Attach persistent SSD to services.
- Preview Environments — Per-PR preview envs with their own DB and services.
- Private Services — Internal services not exposed to the public internet.
- Render Key Value (Redis) — Managed Redis-compatible key-value store.
- Render Postgres — Managed PostgreSQL with automated backups.
- Static Sites — Git-backed static hosting with global CDN, free SSL.
- Web Services — Long-running HTTP services with auto-scale + health checks.
Developer interfaces
| Kind | Knock | Render |
|---|---|---|
| CLI | Knock CLI | Render CLI |
| SDK | knockapi (Python), knockapi (Ruby), knock-elixir, knock-go, knock-java, @knocklabs/node, @knocklabs/react | — |
| REST | Knock REST API | Render REST API |
| MCP | Knock MCP Server | Render MCP |
| OTHER | Outbound Webhooks | — |
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