# Archly > Archly is a prompt engineering workspace for people building apps with AI. It turns ideas, project context, and design decisions into structured prompts for AI app builders and coding assistants. Archly helps users organize projects and chat sessions, reuse platform profiles, and prepare prompts with technology choices, design preferences, behavior rules, brand settings, and skills. Users take the resulting prompts into their chosen builder. Archly does not itself build or deploy their applications. The public free tools are separate from the account-based AI workspace. All 20 free tools assemble documents, calculate values, or generate structured output locally in the browser. They require no signup and make no AI calls or use of AI credits. Their output should be reviewed before use; a generated specification does not implement or enforce application behavior. ## Start here - [Changelog](https://archly.online/changelog): Product updates, improvements, and fixes; unpublished work is marked Unreleased. - [Archly](https://archly.online/): Product overview and how the prompt workspace works. - [Free tools](https://archly.online/tools): Browse all 20 tools by category. - [Use cases](https://archly.online/use-cases): Practical workflows with example briefs and related tools. - [Pricing](https://archly.online/#pricing): Current workspace plans, credits, and limits. - [Frequently asked questions](https://archly.online/#faq): Product and plan questions. ## Languages Public pages and tool interfaces are available in English and 12 additional languages. English URLs have no language prefix. Other languages retain the same page paths after their locale prefix, such as /fr/tools and /ja/use-cases. User-entered values, technical identifiers, and generated exports retain their original format. The account-based application remains in English. - [Español](https://archly.online/es): Spanish. - [Français](https://archly.online/fr): French. - [Deutsch](https://archly.online/de): German. - [Português (Brasil)](https://archly.online/pt-br): Brazilian Portuguese. - [日本語](https://archly.online/ja): Japanese. - [简体中文](https://archly.online/zh): Simplified Chinese. - [Italiano](https://archly.online/it): Italian. - [Nederlands](https://archly.online/nl): Dutch. - [한국어](https://archly.online/ko): Korean. - [Русский](https://archly.online/ru): Russian. - [Türkçe](https://archly.online/tr): Turkish. - [Polski](https://archly.online/pl): Polish. ## Free tools - [Visual UI Prompt Builder](https://archly.online/tools/ui-prompt-builder): Build a visual direction with live typography, color, spacing, and radius controls. Copy a precise UI prompt or download the CSS variables. - [Lovable Knowledge Builder](https://archly.online/tools/lovable-knowledge-builder): Create a Lovable project knowledge document from your app's audience, workflows, stack, and design rules. Free Markdown export, no signup. - [Project Rules Generator](https://archly.online/tools/project-rules-generator): Create AGENTS.md, CLAUDE.md, or Cursor project rules from your stack, commands, and conventions. Free, browser-based, with downloadable files. - [Forgotten Screens Checklist](https://archly.online/tools/forgotten-screens-checklist): Find commonly missed screens and edge cases for authentication, bookings, payments, search, and uploads. Build and download a free app checklist. - [Bug Report & Debug Prompt Builder](https://archly.online/tools/bug-report-generator): Turn reproduction steps, errors, and previous fix attempts into a clear bug report and debugging prompt. Free, no AI calls or signup required. - [App Feature Prompt Builder](https://archly.online/tools/feature-prompt-builder): Choose a feature recipe, add your app context, and assemble a scoped build prompt with states and verification steps. Free, no AI calls. - [Prompt Checklist Checker](https://archly.online/tools/prompt-checklist-checker): Check an app-building prompt for explicit audience, pages, workflows, stack, constraints, and acceptance sections. Free deterministic checklist with manual overrides. - [App Permissions Matrix Builder](https://archly.online/tools/permissions-matrix-builder): Map roles to resource permissions in an editable CRUD matrix. Export a clear access specification as Markdown or JSON, free in your browser. - [UI State Matrix Generator](https://archly.online/tools/ui-state-matrix-generator): Build a component-by-state coverage matrix for loading, empty, error, success, offline, and permission states. Export a UI checklist without AI. - [Acceptance Criteria Builder](https://archly.online/tools/acceptance-criteria-builder): Create Given/When/Then acceptance criteria from user actions, expected outcomes, and selected edge cases. Free Markdown export for app teams. - [Feature Build Sequence Planner](https://archly.online/tools/feature-build-planner): Arrange selected app features into a dependency-aware build sequence, with scoped prompts and verification steps. Free browser-based planning tool. - [Design Token Generator](https://archly.online/tools/design-token-generator): Create semantic color, spacing, radius, and typography tokens with a live component preview. Export CSS custom properties or JSON, free without AI. - [Color Contrast Checker](https://archly.online/tools/color-contrast-checker): Check WCAG AA and AAA text contrast for opaque hex colors. Preview your pair, swap colors, and apply a higher-contrast text alternative. - [Typography Scale Playground](https://archly.online/tools/typography-scale-playground): Preview a modular typography scale with adjustable base size, ratio, font, and line height. Export CSS sizes for body text and six heading levels. - [Responsive Layout Brief Builder](https://archly.online/tools/responsive-layout-builder): Specify mobile, tablet, and desktop columns, gutters, and navigation behavior. Preview a schematic layout and export a responsive implementation brief. - [Form Specification Builder](https://archly.online/tools/form-specification-builder): Build a form schema with field types, validation limits, choices, required fields, and conditional visibility. Preview and export JSON or an implementation brief. - [App Sitemap Builder](https://archly.online/tools/app-sitemap-builder): Arrange public, authenticated, and admin pages into an editable app sitemap. Export a page tree, navigation brief, or JSON without AI. - [Database Schema Planner](https://archly.online/tools/database-schema-planner): Plan entities, typed fields, and relationships with an editable schema view. Export a structured JSON specification or Mermaid ER diagram, free in your browser. - [Project Handoff Pack Builder](https://archly.online/tools/project-handoff-builder): Create a project handoff document with stack, commands, completed features, known issues, and next steps. Free structured Markdown export. - [Realistic Demo Data Generator](https://archly.online/tools/demo-data-generator): Generate seeded users, products, orders, and transactions with consistent references. Export JSON or table-specific CSV, free without AI or external APIs. ## Use cases - [Non-technical founders](https://archly.online/use-cases/non-technical-founders): Turn an app idea into a focused first release. Map your screens, plan the build, and write a clear feature brief with Archly's free tools. - [Indie developers](https://archly.online/use-cases/indie-developers): Keep AI coding work aligned with your existing project. Prepare repository rules, testable acceptance criteria, and a useful handoff with Archly. - [Design engineers](https://archly.online/use-cases/design-engineers): Translate design decisions into a UI brief, reusable CSS tokens, and explicit screen states. Free design planning tools from Archly. - [Client projects](https://archly.online/use-cases/client-projects): Make client app projects easier to brief and review. Capture project context, agree on acceptance criteria, and prepare a clear handoff with Archly. - [Feature development](https://archly.online/use-cases/feature-development): Plan a feature before adding it to your app. Define role permissions, form validation, and acceptance criteria with Archly's free specification tools. - [Debugging](https://archly.online/use-cases/debugging): Give your next debugging session a reproducible starting point. Write a structured bug report, cover failure states, and document the fix with Archly. ## Platform guides Archly is an independent product. Platform guides explain how to prepare prompts for the named third-party builders and assistants; they do not imply ownership or endorsement by those platforms. - [Archly for Lovable](https://archly.online/for/lovable): Platform-specific prompt preparation. - [Archly for Bolt.new](https://archly.online/for/bolt): Platform-specific prompt preparation. - [Archly for v0](https://archly.online/for/v0): Platform-specific prompt preparation. - [Archly for Cursor](https://archly.online/for/cursor): Platform-specific prompt preparation. - [Archly for Replit](https://archly.online/for/replit): Platform-specific prompt preparation. - [Archly for Claude Code](https://archly.online/for/claude-code): Platform-specific prompt preparation. - [Archly for Codex](https://archly.online/for/codex): Platform-specific prompt preparation. - [Archly for OpenCode](https://archly.online/for/opencode): Platform-specific prompt preparation. - [Archly for Antigravity](https://archly.online/for/antigravity): Platform-specific prompt preparation. - [Archly for AI Studio](https://archly.online/for/ai-studio): Platform-specific prompt preparation. - [Archly for Anything AI](https://archly.online/for/anything): Platform-specific prompt preparation. - [Archly for Base44](https://archly.online/for/base44): Platform-specific prompt preparation. ## Optional - [Privacy policy](https://archly.online/privacy): How Archly handles information. - [Terms of service](https://archly.online/terms): Terms for using Archly. - [Sitemap](https://archly.online/sitemap.xml): Public page discovery.