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
Mini Murder Mysteries
Solve cozy, crafty whodunits
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
53 ratings · Top 15%
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/
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 Mini Murder Mysteries: map the core Games 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
Introduce user-generated content or regular updates.
Assumption to check: Limited content variety may lead to player boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Offer a one-time purchase option for all content.
Assumption to check: In-app purchases may frustrate users wanting full access.
Validate with people who use this workflow before building.
Hypothesis 3
Implement hints or a help system to guide players.
Assumption to check: Some clues may be too obscure or difficult to solve.
Validate with people who use this workflow before building.
Hypothesis 4
Add an optional skip feature for difficult puzzles.
Assumption to check: Pacing issues can occur if players get stuck.
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
Solve cozy, crafty whodunits. Puzzle your way through nine unique investigations and use your noggin to make intelligent deductions. Explore the evidence, scrutinize statements, and connect the dots. Mini Murder Mysteries is a cozy investigative deduction game made for fans of head-scratching whodunits. - Solve cozy whodunits Become a detective and solve a series of twisty, tricksy murder mysteries. Examine evidence, read witness statements, and collect deduction words that you'll use to solve each case. - Explore the evidence Leave no stone unturned as you gather clues and discover truths. Cross-reference information, piece things together, and use lateral thinking. - Scrutinize every statement Witness or suspect? Every case offers "useful" input from people closest to the victim. Along the way you'll encounter power-mad movers and shakers, innocent bystanders, gamblers, spies, liars and lotharios. And, who knows, maybe even a lifelong nemesis? - Deduce the truth Sort the coincidental from the crucial to make smart deductions. Each case revolves around 24 'Deduction Words' that you'll use to assert whodunit. The problem? You'll only need a handful of those words to make the correct conclusion. Close your case list and you might even unravel a deeper, interconnected mystery...
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
Supabase
React Navigation
Zustand
react-native-reanimated
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.
