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
MyRigs - Fishing Knots
The choice of the right fishing knot and the correct tying are elementary components of fishing and can make the difference between success and failure.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
2 ratings · Top 15%
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 included16 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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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 MyRigs - Fishing Knots: map the core Reference 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
Expand database with more knot types and user submissions.
Assumption to check: Limited variety of knots compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline storage for saved knots.
Assumption to check: No offline access to favorite knots.
Validate with people who use this workflow before building.
Hypothesis 3
Add user engagement features to enhance community interaction.
Assumption to check: Lack of user engagement features (e.g., comments, ratings).
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a free trial period for premium features.
Assumption to check: In-app purchases might deter users from trying the app.
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 choice of the right fishing knot and the correct tying are elementary components of fishing and can make the difference between success and failure. This app is a must-have for every passionate angler. MyRigs Fishing Knots is one of the most comprehensive reference guide for fishing knots. The detailed pictures and descriptions make it easy for you to learn and rebuild these knots. All knots are explained in an understandable step-by-step guide and are described with a lot of additional information such as knot strength and intended use. A total of 81 different knots in the categories: - special hook knots - terminal tackle knots - line to line knots - stopper knots - loop knots - dropper knots - spool knots - boating knots - many more tips and tricks The app includes: - 81 of the most important fishing knots and boating knots - 8 different categories - Simple and comprehensible description - Includes useful tips and tricks - Large and clear description images - Completely usable without internet connection - Retina support for iPhone and iPad Whether carp fishing, predator fishing or deep sea fishing - everyone will find the right fishing knots here!
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
TypeScript
BUILD KIT DIFFICULTY
Starter
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.
