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
Tapline: Digital Business Card
Your whole introduction on one screen
$1.49
PRICE
$1.49
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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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.
What's included16 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 Tapline: Digital Business Card: map the core Business 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
Allow users to upload custom images and backgrounds.
Assumption to check: Limited customization options for cards
Validate with people who use this workflow before building.
Hypothesis 2
Integrate analytics to track how many times cards are viewed or shared.
Assumption to check: No analytics on card views or shares
Validate with people who use this workflow before building.
Hypothesis 3
Enable users to link their social media profiles directly on their cards.
Assumption to check: Lack of social media integration
Validate with people who use this workflow before building.
Hypothesis 4
Implement QR code generation for easy sharing.
Assumption to check: Basic sharing features only
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
Your whole introduction on one screen. Tapline is your digital business card: share your contact details, links, and payment handles with a single tap or QR scan, with no app to install on their end and no paper to reprint. ONE LINK, ALWAYS CURRENT Change your title, number, or links anytime and everyone who has your card sees the new version. Print your QR code once and never reprint it again. SHARE IN A TAP Show your QR code for someone to scan, or send your link in a text, email, or DM. They save your details in seconds. No app required on their side. BUILT FOR HOW YOU WORK - Name, title, company, and tagline - Phone, email, and website - Unlimited custom links for your portfolio, socials, booking page, and more - Payment handles: Venmo, Cash App, Zelle, PayPal, Apple Cash, and more - Custom sections for anything else you want to share MAKE IT YOURS Choose your colors, add a profile photo and logo, set a background, and switch between light and dark. Your card looks like you. MORE THAN ONE YOU Keep separate cards for work and personal life and switch between them whenever you like. PRIVATE BY DESIGN No ads and no tracking. Sign in with Apple is optional and only used to keep your cards safe across your devices. Made by JimDoes.it - https://jimdoes.it
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-native-paper
react-native-color-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.
