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.
App Overview
Greeting Cards App - Pro
The No.1 Greeting Cards App since 2012
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
181 ratings · Top 30%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Greeting Cards App - Pro: map the core Social Networking workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Offer a wider variety of designs and customization options.
Assumption to check: Limited card designs compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement easier sharing options to social media and messaging apps.
Assumption to check: Difficulties in sharing cards
Validate with people who use this workflow before building.
Hypothesis 3
Introduce features like comments and reactions on shared cards.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 4
Add seasonal templates for holidays and events to attract more users.
Assumption to check: Lack of templates for special occasions
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
The No.1 Greeting Cards App since 2012. Search from thousands of greetings for any occasion, or create your own personalised greetings within seconds. SHARE INSTANTLY! - Greetings designed for any occasion. - Personalise stock greetings with a message. - Tools to create your own personalised greetings. - Tens of thousands of greetings to search and choose from. - Create greetings within seconds. - Set reminder notifications so you never forget an occasion. - Share greetings instantly via, - Facebook - Twitter - Instagram - Messenger - Text - Email - All Social apps We have made greetings accessible rite at your finger tips on the go ! Quickly find great cards for: - Birthday - Thanks - Happiness - Congrats - Baby - Wedding - Friendship - Couples - Funny - On the Fly - Bromance - Love - All festive seasons You name it we have it covered! All you need to do is download Greeting Cards App, head to the search tab and enter a topic and you will have hundreds of images to choose from your topic search. The best part is that it’s FREE! It's all about spreading the love instantly :) Connect with us anytime, Facebook, @greeting_cards_app Instagram, @greeting_cards_app
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
expo-image-picker
BUILD KIT DIFFICULTY
Intermediate
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.
