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.
The #1 Shopping App in the US – The Christmas List is an easy-to-use app to help you organize your Christmas lists and budget so you can spend less time buying presents for the ones you love and more time being presen...
$2.99 · 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.
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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.
Rork plan preview for The Christmas List: map the core Shopping workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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.
Hypothesis 1
Assumption to check: Limited gift suggestion features
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No reminders for shopping
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited customization options
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
The #1 Shopping App in the US – The Christmas List is an easy-to-use app to help you organize your Christmas lists and budget so you can spend less time buying presents for the ones you love and more time being present with the ones you love! _________________________________________ EASY PROGRESS TRACKING Track gifts by to do, purchased, shipping, received, and wrapped. When editing a list you can change the status of multiple gifts at once (for example, when you are wrapping gifts you can change the status of those gifts from purchased to wrapped all at once). EASY BUDGETING Set a budget for a person or don’t – it’s up to you. The Christmas Lists tracks the budget for you. It’s so easy that The Christmas List has been recommended for managing holiday spending by • Good Housekeeping • The Motley Fool • mint.com • BankRate.com • CNBC SHOPPING OVERVIEW Simple, at-a-glance views of shopping progress including budget. ADD GIFTS LIKE JOTTING A NOTE Adding a list of gifts is as simple as typing (or even dictating) a note. Just place each gift name on a new line and The Christmas List transforms your note into a gift list. It’s like Christmas Magic! IMPORT FROM YOUR CONTACTS Get a jumpstart on your lists by importing select recipients from your existing contacts. EASY SHARING Easily share lists using AirDrop, email, iCloud Drive, or Messages. Use AirDrop to quickly share a single recipient or an entire group. SHOPPING LISTS BY STORE Once you select a store for a gift, The Christmas List remembers that store and automatically builds a shopping list for the store to help make sure you get everything you need when you are out and about. MULTIPLE GIFT RECIPIENTS Once you create a gift you can copy it to other recipients on your list without the need to retype the details. POPULAR RETAILERS The Christmas List comes with a list of popular retailers, but if you don’t see the one you are looking for you can easily add your own. You can even use emoji in the store name. ADD PHOTOS Add photos for gifts and people from your photo library, clipboard, or camera. CHRISTMAS COUNTDOWN See a countdown to the number of shopping days until Christmas right in the app. PRINTING Print lists directly from the app. NO PEEKING Optional password protection – set up a PIN or use Touch ID to keep out snoops. EDIT MULTIPLE GIFTS AT ONCE Changing the status of several gifts at once has always been possible on the lists by status (accessed via the Progress tab). Now the lists by person and the lists by store can do it too. Also new is the ability to change the store for multiple gifts at once. It’s never been easier to keep track of what’s wrapped, shipped, and left to do. _________________________________________ PEOPLE ARE TALKING… "The Christmas List is solidly better...with more options and an easier interface." – The New York Times "...it’s happy-making" – Yahoo! News "Some of The Christmas List’s best features are the little details that the app just gets right." – Macworld "Hooray for productivity!" – MSN Tech "It's a handy way to keep track of what you have bought…" – LA Times "…everything you need" – Mashable.com “…great for keeping a budget and tracking shopping progress” – Business Insider _________________________________________ SEE A VIDEO DEMO AT www.limbua.com
Written user reviews are not shown here. Check current App Store reviews >
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.
From the Build Kit assessment.
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.