★★★★★
"I described a habit tracker on Sunday and shipped it to TestFlight on Monday. The Expo project just… ran. Genuinely uncanny."
One sentence to a runnable mobile app. New features in repos you already ship. Clean maps of codebases you inherited. Powered by your own Claude Code or Codex CLI — no AI markup, no lock-in.
I'll wire referrals into your existing ProfileScreen and add a new tab for the leaderboard. Plan:
useReferrals store + api/referrals.ts hitting your Supabase tablesReferralCard component (matches your NativeWind tokens)ProfileScreen + AppNavigator to mount the card and tabLeaderboardScreen as a fifth tab rootstore/useReferrals.ts+86api/referrals.ts+62components/ReferralCard.tsx+48screens/ProfileScreen.tsx+34 −2navigation/AppNavigator.tsx+12Build Speedy reads your project once, then re-uses that map across every Build and Extend pipeline. Our Claude Code CLI and Codex CLI runs touch only the files that matter — your conventions preserved, fewer tokens spent.
.build-speedy/ and reuse across phases — ~68% fewer tokens vs. re-explaining each prompt.Build new mobile apps from a sentence, layer features onto apps you already shipped, or read an unfamiliar codebase like a senior engineer would.
Describe the app, pick a built-in style — or drop in screenshots to clone any design. Get a real Expo / Xcode / Gradle project: screens, navigation, theming, install.
Point Build Speedy at the codebase you already ship. It maps the project, plans the change, and writes the feature in your style — not a parallel rewrite.
Get a screen-by-screen map, data-flow summary, and a punch list of risk areas. The codebase explains itself, in your terms.
Build Speedy plans the work and orchestrates the prompts. Every token runs through your Claude Code or OpenAI Codex CLI subscription — your usage, your limits, no AI markup from us.
Sign in with your Claude Code or OpenAI Codex CLI. Every prompt runs on your subscription, within your existing usage limits — Build Speedy never resells inference.
One sentence for a brand-new app — or point at an existing repo to extend or analyze. Pick a built-in design system or clone one from a screenshot.
Speedy plans phases, runs them in parallel through your CLI, and hands back a runnable project or a clean diff. Token-efficient by design — caching specs to disk so prompts never re-explain context.
Not just screens — complete codebases with navigation, theming, and structure ready for production.
Generates complete Expo, Xcode, or Gradle projects. Not snippets — real buildable apps you can run today.
Point at an existing repo and Build Speedy plans, edits, and lands a feature in your codebase's own style. Diffs you can actually review.
Every line is yours. No vendor lock-in, no runtime dependency. Eject, modify, and ship freely.
Plan once, generate many. Specs are cached to disk, screens run in parallel, and prompts never re-explain context — fewer tokens, faster builds.
50+ pre-built components per design system — buttons, cards, modals, inputs, toggles, charts, and more.
Open a project you didn't write. Get screen maps, data-flow notes, security hot-spots, and a refactor punch list — written like a senior engineer's first PR review.
Pick from ten production-ready themes — tokens, typography, components, and icons all wired up. Or drop in screenshots from any app you love and Build Speedy clones the style into a fresh, themed component set.
Clean, modern dark UI. Subtle borders, crisp typography, cyan accents.
High-energy gradients, punchy colors, playful shadows. For apps that pop.
Warm naturals, soft greens, rounded corners. Calm and approachable.
Gentle pastels, light backgrounds, rounded shapes. Friendly and delicate.
Pure black and white. Maximum contrast, editorial feel. Typography-driven.
Raw edges, hard shadows, monospace type. Industrial and unapologetic.
Send a screenshot of an app you love (or a paragraph describing the vibe) and Build Speedy clones the design system: tokens, typography, components, and icons. No designer required.
Indie hackers, agencies, and product teams using Build Speedy to ship, extend, and inherit mobile codebases.
"I described a habit tracker on Sunday and shipped it to TestFlight on Monday. The Expo project just… ran. Genuinely uncanny."
"We used the Extend mode to drop a referrals feature into our 3-year-old React Native app. It actually matched our patterns. Saved a sprint."
"Inherited an undocumented SwiftUI app. Build Speedy's analyzer gave me a screen map, data flow, and a TODO list in 4 minutes. That's a week of onboarding."
"Token bill went down ~60% after we switched our internal AI tools to use Build Speedy's spec-cache pattern. The pipeline architecture is the real product."
"We pitched three KMP prototypes to a client in one afternoon. They picked one. We shipped it. The themed components are genuinely production-ready."
"The Claude Code CLI integration means I can keep iterating after the initial build. It's not a black box — it hands me a project and gets out of the way."
"Tried v0, tried Bolt, tried half a dozen others. Build Speedy is the first one that actually outputs a buildable mobile project, not a web app pretending."
"Ran the analyzer on a client's legacy app before quoting the rebuild. Found 3 critical auth issues nobody had flagged. We doubled the project scope."
"Codex on the heavy refactors, Claude on the planning, my engineers on the parts that matter. Build Speedy stitches it together so we don't have to."
"$14/mo and I shipped four side projects in a quarter. Two of them are paying customers now. Math kind of works itself out."
One plan with everything. Early adopters keep the lower price forever.
Describe your app. Get production code. Ship faster than you thought possible.
Start Building — $14/mo