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
Randonautica
Quantum random exploration can change reality as you know it
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.6
13,335 ratings · Top 50%
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 included18 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 Randonautica: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Quantum random exploration can change reality as you know it. The superpower behind Randonautica gives you a random location to journey to. Set your intention in your mind for what you seek, you will find. Reasons to use Randonautica to generate completely random coordinates for you to travel to: -To go on an unexpected adventure -To test out quantum entropy and the mind's ability to influence reality -To break the matrix -To get some exercise by walking to a random location -To open a real world portal -To get off screens and go on an outdoor adventure -To feel heightened awareness and observation -To feel being present -To find new areas in your neighborhood, town or city -To connect with other people of similar interests across the globe on Randonautica's in-app Social Media feed, Discover Randonautica is the first ever quantumly generated adventure game that takes you on a journey of true randomness. The adventure is yours to have and the legend will be yours to tell. Welcome, future Randonauts! Explore the world beyond the habitual and deterministic patterns of your everyday life, discover adventures right in front of your doorstep. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Written user reviews are not shown here. Check current App Store reviews >
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 more filtering options for types of locations.
Assumption to check: Limited functionality in exploring areas
Validate with people who use this workflow before building.
Hypothesis 2
Optimize map loading and user location handling.
Assumption to check: Inconsistent performance on map loading
Validate with people who use this workflow before building.
Hypothesis 3
Simplify onboarding and location generation process.
Assumption to check: User interface complexity
Validate with people who use this workflow before building.
Hypothesis 4
Provide an ad-free experience with a premium subscription.
Assumption to check: Ads can be intrusive
Validate with people who use this workflow before building.
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 Navigation
React Native Maps
Zustand
Axios
Expo Location
Shadcn/UI
BUILD KIT DIFFICULTY
Advanced
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.
