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
The Sidewinder Checklist
The Sidewinder Checklist: Dive Simplified
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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 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 The Sidewinder Checklist: 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
Allow users to customize checklist themes and colors.
Assumption to check: Limited customization options for checklists
Validate with people who use this workflow before building.
Hypothesis 2
Implement reminder features for checklist items.
Assumption to check: No reminders or notifications
Validate with people who use this workflow before building.
Hypothesis 3
Add sharing functionality via links or social media.
Assumption to check: Difficult to share checklists
Validate with people who use this workflow before building.
Hypothesis 4
Introduce analytics for users to track their checklist completion over time.
Assumption to check: No progress tracking over time
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 Sidewinder Checklist: Dive Simplified Welcome to The Sidewinder Checklist app – your ultimate digital companion for rebreather diving! Say goodbye to paper waste and embrace the digital revolution with our user-friendly app, specifically designed for iPhone and iPad. This innovative application is crafted to streamline your diving experience, making rebreather assembly and dive planning more efficient, environmentally friendly, and enjoyable. Key Features: Dedicated Checklists: Our app follows the manual lists to provide dedicated checklists for rebreather assembly. Ensure you never miss a step with intuitive and comprehensive guidance. Countdown Timers: Set precise countdown timers for Positive, Negative, and Pre-breathes, ensuring your rebreather preparation is timely and accurate. Comprehensive Task Management: Manage your build prep with ease. Our checklist helps you track every detail of your dive preparation. Save the Planet: Move away from throwaway paper checklists for every dive. Our digital solution not only streamlines your preparation but also contributes to reducing paper waste, helping you dive sustainably. Gear List with Locally Saved Data: Keep a detailed gear list and save your data locally on your device. Access your equipment checklist anytime, ensuring you’re always prepared for your dive. Notifications: Stay on top of your dive planning with timely notifications. Our app reminds you of crucial preparation steps and countdowns, so you’re always ready to dive without delay. Build History with Locally Saved Data: Stay on top of your cell health with cell accuracy charts. Along with build history that includes all the mV values stored from your build. Your Dive, Our Priority: The Sidewinder Checklist app is more than just a checklist; it's a comprehensive tool designed to enhance your diving experience. Whether you’re a seasoned rebreather diver or just starting, our app ensures your preparation is thorough, efficient, and environmentally conscious. Download Now: Ready to transform your diving routine? Download The Sidewinder Checklist app today and take the first step towards a more organized, efficient, and eco-friendly diving experience!
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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
Zustand
React Navigation
TypeScript
Supabase
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.
