Agents write the code. You architect the system.
The deployment stack advisor
Describe your app and get the right infrastructure — with real cost estimates, an interactive architecture canvas, and a forecast of what scaling will cost. Built for developers and the agents that code for them.
Type it like a ChatGPT prompt — AI fills the form, you tweak it. No signup required.
Your indie SaaS · 2,000 daily users · SSR web app
our recommendation
Drag the dial — every stop is a real stack with real monthly prices.
The engineering dial — five stacks for the same app, from $0 duct tape to web-scale overkill.
"I built an app. Where do I host it without overspending?"
Answer a few questions and get the cheapest stack that actually fits — plus more ambitious options if you want headroom.
"I'm launching on HN tomorrow. Will it survive?"
See exactly what your stack costs at 100, 1k, 10k and 100k daily users, and which piece falls over first.
"I have 30 apps on 10 providers. Help."
One dashboard for every app's architecture, with alerts when a provider ships a cheaper tier you could use.
How it works
Describe your app
App type, expected traffic, storage and compute needs, how hands-on you want to be. Two minutes.
Get your stack
A concrete recommendation — compute, database, storage, jobs — on an interactive canvas with real monthly pricing from a hand-curated knowledge base.
See the future
Drag the DAU slider, swap plan tiers, watch costs recompute live. Know your bill before you get it.
Numbers you can trust
Cost estimates come from a hand-curated, versioned knowledge base of provider pricing — not an LLM's imagination. The AI explains the trade-offs; the math is deterministic and auditable.
Get my recommendationLearn the platforms — or let us pick
Free written guides on Cloudflare Workers, Vercel, Railway, Fly.io, Hetzner and AWS. Understand what you're deploying to — then let StackPlan do the heavy lifting.