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.
We started Keep the Sauce after it happened to us one too many times
$4.99
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.
We started Keep the Sauce after it happened to us one too many times. Our family saved recipes from recipe sites and social apps for years. Then we'd go back to make one, and the post was gone, the blog was gone, the recipe was just… lost. Keep the Sauce saves a permanent copy of every recipe: ingredients, steps, photos and your notes. If the original site disappears tomorrow, your recipe doesn't. SAVE FROM ANYWHERE • Share from Safari, any recipe site or social app. We find the real recipe under the ads and life stories. • Snap a cookbook page or a handwritten card and we'll read it for you. • Paste a link, or type it in yourself. • Duplicate check, so the same recipe isn't saved twice. A RECIPE BOX THAT FEELS LIKE YOURS • Beautiful recipe cards, sorted by when you added them. • Categories, favorites, "want to try", ratings and margin notes. • Search every word: titles, ingredients, steps and notes. Search "carrots" and find every recipe with carrots. PLAN THE WEEK, SHOP ONCE • Put recipes on the week's menu in a tap. • One smart grocery list: garlic from four recipes becomes "Garlic, 3 heads", sorted by your store's aisles, with what each recipe needs underneath. • "We have it" for the things already in the pantry. COOK MODE • Big, clear steps, and the screen stays awake while you cook. FAMILY (optional subscription) • Share one recipe box with your household. Everyone's changes sync live. • Plan the menu and check off the grocery list together, in the store. • Your recipes on the web at keepthesauce.com, plus server backups. • $4.99/month or $39.99/year, with your first month free. WITHOUT FAMILY The $4.99 app is complete on its own: save, organize, plan, shop and cook. Everything stays on that one device. No sharing, sync, web access or backups. NO ADS. EVER. You pay for the app, so we don't sell your attention or your data. TELL US WHAT YOU'D LOVE Keep the Sauce is built by a family, for families. Want a feature? Tap "Request a feature" in the app or write to [email protected]. We read every note and we'll seriously consider every request. Family is an auto-renewing subscription. Payment is charged to your Apple ID when the free month ends unless you cancel at least 24 hours before. Manage or cancel in Settings › Apple ID › Subscriptions. Terms: https://keepthesauce.com/terms · Privacy: https://keepthesauce.com/privacy
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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.