Euclid
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How it worksBuild PromptFeaturesPricingQuestionsSign inStart free
Four months of Indie for the price of threeSee the offer

Build what your users actually want.

Euclid is the feedback board you add to your app in one line. It shows you what users want most, then writes the prompt your AI coding agent needs to build it.

Start freeSee how it works
Free plan, no credit card. Installs with one script tag.
Prompts formatted for the tools you already build with
Claude CodeCodexCursorLovableBoltv0WindsurfReplit
  1. 1Users suggest and vote inside your app
  2. 2Euclid ranks what matters
  3. 3Your coding agent gets the brief
The problem

Feedback is everywhere. Your roadmap isn’t.

Ideas arrive in DMs, emails, Discord threads and app reviews. None of them are counted, so you build for whoever messaged last.

  • The loudest user winsWhoever messaged last sets the roadmap, not the people who pay you.
  • Duplicates hide real demandThe same request shows up five different ways, so nothing ever looks urgent.
  • Every feature starts with a blank promptTurning a vague request into a clear brief for your coding agent eats the first hour.
How it works

One loop, from request to release.

Set it up once. After that, every idea your users share has a clear path to a shipped feature.

  1. Step 1

    Embed in one line

    Paste one script, or ask your coding agent to add it. Style the board to match your app.

  2. Step 2

    Users suggest and vote

    They see similar ideas as they type, so they vote instead of posting the same thing twice.

  3. Step 3

    Euclid finds the signal

    It merges duplicates, groups posts into themes and shows which ones your paying users want.

  4. Step 4

    Your agent builds it

    One click turns a request into a prompt for Claude Code, Codex, Cursor or your builder of choice.

When it ships, Euclid emails every voter and updates your public roadmap.
Build Prompt

Your next feature, already briefed.

Pick any request. Euclid combines it with your stack and your users’ own words into a prompt your coding agent can run with.

  • Knows your stack from a one-time project profile
  • Quotes real users, safely marked as data
  • Acceptance criteria, edge cases and a test plan
  • Flags its own assumptions for you to confirm
  • Formatted for the tool you actually use
Start free
build-prompt.claude.mdUser text quoted as data
# Task: Export journal entries to CSV and Markdown
Start in plan mode. Propose a plan and wait for approval.

## Why this matters (184 votes, 62% paying users)
> "Backups. I don’t trust any app with two years of my writing."
> "One file per entry, with the date in the filename."

## Project context (from CLAUDE.md)
- Next.js 15 (App Router), Supabase, Clerk

## Acceptance criteria
- [ ] "Export" button in Settings › Data
- [ ] Markdown files named YYYY-MM-DD-slug.md
- [ ] Free plan gets CSV only

## Assumptions to verify
1. Entries live in a table named entries
From #142, 184 votes, 3 merged posts
Features

Everything a solo founder needs. Nothing they don’t.

No seats, no setup calls, no roadmap software to learn. Just the parts that help you ship.

A board that looks like your app

Pick a preset, set your accent colour and corners, and choose inline or floating. Changes go live without a redeploy.

Duplicates merge themselves

Euclid spots the same idea worded five ways and keeps every vote.

Themes, not 400 posts

Posts are grouped by meaning, so you see six clear themes instead of an endless list.

Ask Euclid anythingPro

Plain-language answers about your feedback, with links to the posts behind them.

See who is asking

Pass each user’s plan from your app and see demand split by the people who pay you.

Ship it, then tell them

Publish a changelog entry and Euclid emails every person who voted, marks the request Shipped and drafts the note for you.

A public roadmap, included

A hosted page your users can bookmark, at your own subdomain.

Pricing

Simple pricing. No per-user fees.

Flat plans that don’t grow with your user count. Start on Free, upgrade when your board gets busy.

Launch offer

Four months of Indie for the price of three.

25% off for your first four months — $9 a month instead of $12, so $36 covers four months where list price covers three. A month of Bernn Monthly ($4.99 a month on its own) comes with it. Nothing to type: the discount applies itself at checkout.

Get Indie for $9Indie monthly only. First 50 customers, one each.
  1. 7 days free firstThe trial doesn't use up a discounted month
  2. Then 4 months at $9$36 in total, where list price is $48
  3. A month of Bernn Monthly, freeSingle-use code, emailed when your first payment clears
  4. After that, $12 a monthRenews as normal. Cancel any time

Free

For your first board and first users.

$0forever
Start free

No card needed.

  • 1 board with widget and public page
  • Anonymous and email voting
  • 3 Build Prompts a month
  • Euclid badge on your board

Indie

Best for solo founders

For a live app with real users.

$12a month
Get Indie for $9Get Indie at $12 a month

$9 a month for your first four months, then $12. Includes a free month of Bernn Monthly.

7-day free trial. Cancel any time.

  • 3 boards
  • 50 Build Prompts a month
  • Duplicate merging, themes and analytics
  • Slack and Discord alerts, export to GitHub and Linear
  • User plans from your app (signed token)
  • No Euclid badge

Pro

For apps with more than one product.

$29a month
Get Pro

7-day free trial. Cancel any time.

  • Unlimited boards
  • 300 Build Prompts a month
  • Ask Euclid chat, 500 credits a month
  • Weekly digest and read-only GitHub repo context
  • Custom domain for your roadmap

Run out before the month does?

Buy a pack. It lands on your account straight away and never expires — your monthly allowance is always spent first.

  • 50 Build Prompts$5Indie and Pro
  • 200 Build Prompts$15Indie and Pro
  • 250 Ask Euclid credits$5Pro only
  • 1,000 Ask Euclid credits$15Pro only

Prices in USD, billed by Polar. Studying? Verify your school email in the app for 50% off for as long as you’re enrolled.

Questions

Everything you’re wondering.

Something else on your mind? Email the founder and you’ll hear back from a real person.

25% off Indie for your first four months: $9 a month instead of $12, so $36 covers four months where the list price covers three. Your 7-day trial runs first and doesn't use up one of the four — the discount starts with your first real payment. After the four months the subscription simply renews at $12; nothing cancels itself. It's Indie on monthly billing only, limited to the first 50 customers, one each, and there's no code to type — it applies at checkout.

Bernn is an iOS app that totals your AWS, Anthropic and OpenAI spend into one figure, with per-provider breakdowns, budget alerts that fire before you cross the line, and a home-screen widget. Its paid tier is $4.99 a month, and the launch offer includes one month of it free. You'll get a single-use code by email once your first payment clears — not at signup, since the trial doesn't charge anything — and it's on your billing page in the app too.

Yes. Euclid is out now, and there is no waitlist left to join. Sign up, create your board and paste in the script tag the app generates for you — the Free plan needs no card, and every paid plan starts with a 7-day trial.

You can buy a top-up pack: 50 Build Prompts for $5, or 200 for $15. It lands on your account right away and never expires, and your monthly allowance is always spent first. Ask Euclid credit packs work the same way on Pro.

Yes — 50% off for as long as you're enrolled. Verify your school email inside the app and it applies itself; there's no code to ask us for. Verifications are good for a year, then you re-verify. It doesn't combine with the launch offer — only one discount applies to a checkout — but at 50% off with no end date, the student rate is the better one to be on.

No. The widget loads after your page does, runs in its own isolated container and is built to stay small. If Euclid is ever down, your app keeps working as normal.

Claude Code, Codex and Cursor get prompts in their own format. Lovable, Bolt, v0 and anything else get a clean Markdown prompt you can paste wherever you build.

No. You describe your stack once, or paste your package.json, and Euclid uses that. On Pro you can also give Euclid read-only access to a GitHub repo, which makes the prompts more precise — it is optional, and read-only.

No. Feedback is only used to run your workspace, and you can export or delete it whenever you want.

Most feedback tools stop at showing you what users want. Euclid goes one step further: it hands your coding agent a ready-to-run brief, then tells every voter when the feature ships.

Stop guessing what to build next.

Euclid is out now. Add the board to your app today and let your users, and your coding agent, do the heavy lifting.

Start freeSee pricing
Free plan, no credit card. Paid plans start with a 7-day trial.