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
Plinkr
Plinkr will keep you up-to-date on the latest 2A news from trusted sources.
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
8 ratings · Top 5%
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 included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Plinkr: map the core News 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
Implement a more robust preferences section allowing users to easily select interests and categories.
Assumption to check: Users often find it difficult to customize their news feed.
Validate with people who use this workflow before building.
Hypothesis 2
Add a feature that allows users to download articles for offline access.
Assumption to check: Limited offline reading options.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize notification settings based on topics or categories.
Assumption to check: Push notifications can be overwhelming.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize search algorithm and implement caching for faster results.
Assumption to check: Search functionality can be slow.
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
Plinkr will keep you up-to-date on the latest 2A news from trusted sources. Plinkr is the most comprehensive 2A enthusiasts mobile app ever built helping you find your favorite range, training facility or FFL. Plinkr is a social presence aggregator for all sporting goods stores with a FFL. A virtual community for all FFLs One stop app to browse all the social media outlets that a sporting goods store has elected to use to promote their business. View your favorite FFL's Youtube content right in the app to see their latest reviews or other content. With over 7,000 shooting ranges available in our database you will be sure to locate the perfect place to train or bring your family for exciting range outdoor/indoor fun. There are over 80,000 FFL's available in our database all of it comes directly from the ATF and is up-to-date! With all this data you can find any sporting goods retail store around you or in any city of your choosing. When using the app notifications will keep you informed of new products and industry events. You'll be able to even get some good deals too! Every time you admire a FFL's details the FFL is dynamically checked with the ATF eZCheck website to ensure the license is still valid! Leave a review or comment regarding a local store or range and include a photo too to share if so inclined. Plinkr presents curated news feeds that present a variety of industry news, political news affecting the 2A rights and entertainment from a few select YouTube channels and blogs. You can browse all GunBroker items, such as hunting and outdoor sports items for your next fishing or camping trip or whatever. Mark all your favorite sporting goods stores that have a FFL to follow their special deals and current customer events. This is the most comprehensive app available that shows both ranges, training facilities and 2A retail stores (FFLs) in one place. Rich and comprehensive experience for 2A enthusiasts throughout the known USA! This can also be used to look up related info in Canada and Europe via the "Local Search" feature. Built by a fellow 2A enthusiast for fellow 2A enthusiasts.
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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
Axios
React Navigation
AsyncStorage
Zustand
BUILD KIT DIFFICULTY
Advanced
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.
