Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
FOCO watches every page you visit in Safari and highlights the words and phrases you tell it matter: a street address in a listing feed, a case number, a competitor's name, your kid's school
$5.99 · In-app purchases
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Your first Build Kit is free with a verified email.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
FOCO watches every page you visit in Safari and highlights the words and phrases you tell it matter: a street address in a listing feed, a case number, a competitor's name, your kid's school. They jump out without you scanning for them. ON IPHONE AND MAC One purchase covers FOCO on your iPhone and your Mac. Turn on iCloud sync and your lists, words and settings follow you between them. LISTS & COLOR Group words into colored lists: solid fill, colored underline, or an outline box. Two curated palettes, Soft and Neon, plus any custom color, with text colors chosen for contrast automatically. MATCHING THAT SCALES WITH YOU Literal by default, with accent folding, so "cafe" matches "café" too. Add wildcards or full regular expressions when you need them. SCOPED TO WHERE IT MATTERS Limit any word to specific sites, or exclude it from a few. Block FOCO entirely on chosen sites, subdomains included, toggleable right from the Safari popup. A QUIET SAFARI POPUP Master on/off, a per-site mute, and a collapsible breakdown of what's highlighted on the current page and how many times each word matched. Tap a word to jump to it on the page, with a small bar for stepping through the matches. Add the selected text to any list, edit a list's words and colors, or select several words to delete, move or limit them to sites, all without leaving the page. A REAL APP FOR THE HEAVY LIFTING Browse your lists, Domains and Current Page Highlights. Search across every list, export/import, and recover anything from Recently Deleted for 30 days. Notify on Match alerts appear on your Mac. PRIVACY No account, no sign-in, no server of ours. Your word lists live on your device. If you turn on iCloud sync, they are stored in your own private iCloud, which only you can access; FOCO's developer never sees them. No analytics, no tracking, no telemetry of any kind. Page content is read and highlighted entirely on-device, in the browser. FOCO is a one-time purchase. No subscription, no in-app purchases.
Written user reviews are not shown here. Check current App Store reviews >
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
Not assessed in a Build Kit yet.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.