Render vs Knock
Unified cloud for apps, databases, and static sites
vs. Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
Pricing tiers
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
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
Free-tier quotas head-to-head
Comparing hobby on Render vs starter on Knock.
| Metric | Render | Knock |
|---|---|---|
| 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
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.
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).
Developer interfaces
| Kind | Render | Knock |
|---|---|---|
| CLI | Render CLI | Knock CLI |
| SDK | — | knockapi (Python), knockapi (Ruby), knock-elixir, knock-go, knock-java, @knocklabs/node, @knocklabs/react |
| REST | Render REST API | Knock REST API |
| MCP | Render MCP | Knock MCP Server |
| OTHER | — | Outbound Webhooks |
Staxly is an independent catalog of developer platforms. Some links to Render and Knock may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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