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
Rescue Knots
27 OF THE MOST POPULAR AND USEFUL SEARCH AND RESCUE KNOTS!
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
3 ratings · Below Average
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/
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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 Rescue Knots: map the core Sports 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 premium knots with detailed guides and videos.
Assumption to check: Limited content variety and depth for knots.
Validate with people who use this workflow before building.
Hypothesis 2
Implement gamification elements like quizzes and achievements.
Assumption to check: User interface is not very engaging.
Validate with people who use this workflow before building.
Hypothesis 3
Clearly communicate the value of premium features and provide a free trial.
Assumption to check: In-app purchases for additional knots may confuse users.
Validate with people who use this workflow before building.
Hypothesis 4
Conduct user feedback sessions to identify and address pain points.
Assumption to check: Low ratings suggest user dissatisfaction.
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
27 OF THE MOST POPULAR AND USEFUL SEARCH AND RESCUE KNOTS! • #1 Sports app in 3 Countries! • Top 20 Sports app in the USA and Canada! • "This is a great app....very useful for anybody in firefighting…" - App Store USA • "This is an amazing app. I'm a firefighter and use this as a cross reference...in the field.." - App Store USA ****** Geared towards professional search and rescue, police, fire and military training, Search and Rescue Knots provides an at-your-finger-tips reference for tying 27 of the most popular and useful knots used in emergency situations. The selection of knots was determined through research, consultation and our history of developing sophisticated training materials for the fire rescue field. The precisely designed and detailed graphics emphasize key steps and clearly show critical overlapping elements, arrows and other guides to help you understand complex knots. Follow along with the written steps or rotate your phone to the side for a zoomed view. • Search and Rescue Knots includes these great knots and a visual glossary Loops ▸ Bowline ▸ Butterfly Loop ▸ Double Bowline ▸ Double Figure Eight ▸ Figure Eight Follow-Through ▸ Figure Eight on a Bight ▸ Inline Figure Eight Hitches ▸ Clinch Hitch ▸ Clove Hitch ▸ Girth Hitch ▸ Half Hitch ▸ Load Releasing Hitch ▸ Münter Hitch ▸ Prusik Hitch ▸ Tensionless Hitch ▸ Timber Hitch ▸ Trucker's Hitch Bends ▸ Double Fisherman's Knot ▸ Figure Eight Bend ▸ Water Knot ▸ Sheet Bend Stoppers ▸ Double Overhand ▸ Figure Eight ▸ Overhand Knot Harness ▸ Fireman's Chair ▸ Karash Harness ▸ Triple Bowline • SUPPORT: fissionmedia.com
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
Axios
React Navigation
React Native Share
Shadcn/ui
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.
