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
Crystal Guru
Crystal Guru is an easy to use educational tool for those who seek to deepen their knowledge of crystals and gemstones
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
22 ratings · Top 30%
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 included14 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 Crystal Guru: map the core Lifestyle 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
Incorporate user-generated content and community features.
Assumption to check: Limited content variety in crystal descriptions
Validate with people who use this workflow before building.
Hypothesis 2
Add functionality for users to share crystals on social media.
Assumption to check: No social sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced search and filtering options.
Assumption to check: Difficulty in finding specific crystals
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline mode for crystal guides and articles.
Assumption to check: Lack of offline access to content
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
Crystal Guru is an easy to use educational tool for those who seek to deepen their knowledge of crystals and gemstones. As an extension of the Aura Shop, we intend to provide you with an incredible service to help facilitate your personal transformation and ascension. FEATURES Extensive list of nearly 200 crystals, and minerals each described with the following attributes: -High Resolution images (For every mineral and crystal!!) -Name -Color -Origin -Metaphysical Properties -Chakra Correspondence -Astrological Correspondence -And more! Categorize your mineral and crystal dictionary to see your crystals grouped by Chakra Correspondence, Metaphysical Properties, Colors, Origin, and Astrological Correspondence. Filter feature allows you to refine your dictionary so you can quickly view only entries that match the attributes of your choosing. Favorites feature lets you keep track of your favorite minerals and crystals for easy access. Keep handy notes on what you’ve learned in the Crystal Journal. Wealth of background information including: -Recommended Reading selected by experts at Aura Shop -Chakra & Astrological information describing which crystals/minerals relate to which Chakras/Signs -Detailed instructions on how to work with your cystals/minerals to maximize the effectiveness of your crystals and minerals All photos used in our app are original photo’s taken in-store by us at the Aura Shop in Santa Monica, California, unless otherwise noted. DISCLAIMER We feel that crystals can complement other therapies and support energetic well being. Crystals should not be used as a replacement for medical treatment. For medical advice, please consult a licensed healthcare specialist.
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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.
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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.
