Free tier — no card required

Your backends, unified.

One URL. Stays alive.

WatsonLB sits in front of your scattered free-tier backends on Render, Railway, Fly.io — and routes traffic intelligently. If one goes down, traffic moves to another. If all are cold-starting, your requests queue and flush automatically instead of returning 502.

Start for free →See it in action
terminal
# Before WatsonLB
BACKEND_URL=https://myapp.onrender.com  # 💀 single point of failure

# After WatsonLB
BACKEND_URL=https://watsonlb.online/p/a1b2c3d4/
# Routes to: render.com → railway.app → fly.io
# Request queue: holds cold-start requests → flushes when backend wakes
99.9%
Uptime target
<30s
Cold-start queue
5min
Health check interval
60s
Alert response time

How it works

Three steps from scattered backends to a single resilient URL

→ Open live simulation
1
Add your backends
Paste in your Render, Railway, Fly.io URLs. WatsonLB pings them every 5 minutes and tracks health automatically.
2
Get your proxy URL
One URL replaces all your backend URLs. Point your frontend at it. WatsonLB handles routing, failover, and queuing.
3
Sleep at night
Morning health reports, real-time alerts, and circuit breakers mean your app stays alive even when backends are flaky.

Everything included

Round-robin routing
Traffic distributed across all healthy backends. Failed ones are automatically bypassed and retried later.
Request queue
Free-tier apps cold-start in 10–30s. Requests queue silently and flush the moment the backend wakes — no 502.
Health monitoring
Pings every backend every 5 minutes. Circuit breaker trips after 3 failures. Visual uptime bars in dashboard.
Morning reports
Email at 8am covering what happened while you slept — uptime percentage, downtime windows, response times.
Shield middleware
Blocks bad bots, path traversals, scrapers, and rate-limit offenders before they reach your backend.
Real-time alerts
Instant email (and WhatsApp on Pro) within 60s of any backend going down. Know before your users do.

My Render service goes to sleep every 15 minutes. WatsonLB queues the wake-up request and my users never see a 502 again. It's exactly what I needed.

— Developer on free tier, saving ₹0/month

Pricing

First week free on any plan. No card required.

Free
Free
  • 2 backends
  • Load balancing
  • Request queue (20s)
  • Dashboard
Get started →
Starter
₹50/week
  • 2 backends
  • Morning health report
  • Queue 30s
  • Shield add-on
Get started →
POPULAR
Pro
₹75/week
  • 4 backends
  • Real-time alerts
  • WhatsApp alerts
  • Shield included
  • Queue 60s priority
Get started →
Max
₹100/week
  • Unlimited backends
  • DB query routing
  • Priority support
  • Queue 90s priority
Get started →

Read the docs

Integration guides, API reference, and examples for every major platform.

View docs →

Stop babysitting your free-tier backends.

Used by developers who just want their first app to stay alive.

Get started — it's free