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
3D Spirit Board PLUS
***3D Spirit Board PLUS is the paid version of 3D Spirit Board FREE
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
5 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
Preview a sample Build Kit No email needed
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 3D Spirit Board PLUS: map the core Entertainment 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
Add social sharing for questions and answers.
Assumption to check: Limited user engagement due to lack of features
Validate with people who use this workflow before building.
Hypothesis 2
Optimize graphics and reduce resource usage.
Assumption to check: Inconsistent performance on lower-end devices
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize board themes and pointer styles.
Assumption to check: Minimal customization options for users
Validate with people who use this workflow before building.
Hypothesis 4
Introduce sound effects and animations for a more immersive experience.
Assumption to check: Limited feedback on spirit interactions
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
***3D Spirit Board PLUS is the paid version of 3D Spirit Board FREE. 3D Spirit Board PLUS automatically saves all of your previous Spirit Board sessions for later viewing! PLUS is also ad-free!*** Cross over into other worlds and interact with the supernatural by using the 3D Spirit Board app! Gather a group of friends into a circle around your mobile device and launch the 3D Spirit Board app. With the mobile device (the board) in the middle of your group, have all participants hold the mobile device off the ground and parallel to the floor. Ask questions to the supernatural and any active spirits or entities in the area will influence the direction of the on-screen Planchette by subtly tilting your mobile device to spell out their responses. Take heed, only ask the supernatural questions that you are prepared to hear answered. Not all spirits are friendly and not all entities are "human".
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
react-three-fiber
react-navigation
react-native-gesture-handler
@react-native-async-storage/async-storage
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.
