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
Mugmojis
Some crimes don't make the news
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 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 Mugmojis: 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
Provide more customization features like stickers, fonts, and effects.
Assumption to check: Limited customization options for mugmojis
Validate with people who use this workflow before building.
Hypothesis 2
Introduce subscription tiers for premium content or features.
Assumption to check: Single pricing model may not attract diverse users
Validate with people who use this workflow before building.
Hypothesis 3
Integrate social sharing options for users to showcase their creations.
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Add features like contests or community showcases to increase engagement.
Assumption to check: Lack of user engagement features
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
Some crimes don't make the news. They make the group chat. Mugmojis is a mugshot booking-photo app and coming soon, sticker pack for the pettiest offenders alive. 142 fictional perps, each one booked for a crime you've absolutely witnessed in real life --putting pineapple on pizza, starting a slow clap no else joins, clapping when the plane lands, starting a reply-all chain, etc. Drop their mugshot straight into your conversation when someone in the chat deserves to be charged. All charges can be edited to avoid false accusations. WHAT'S INSIDE - 142 original mugshots, every one a fictional AI-generated character - Sorted into themes: Food & Drink, Tech & Work, Social Crimes, Shopping, Driving & Public, and Personal Life - 100 of them ship as a native iMessage sticker pack — tap to send, no copy-paste - Favorite the ones that hit closest to home - Edit any WANTED FOR to make it personal before you send it MAKE YOUR OWN Caught someone red-handed? Book them. Snap a photo, slap on a height-chart or jail-bars filter, and type exactly what they're WANTED FOR. Your custom mugshot saves to Favorites and sends through the standard share sheet. KEEP THE PERPS COMING Got a charge we missed, a perp idea, or a feature request? Tap "Get Support" in the app and send it over. We review suggestions weekly and ship new perps and features regularly — the pack keeps growing. HONEST DISCLAIMER Every face is AI-generated and completely fictional. Every charge is made up for laughs. No real people, no real arrests, no real crimes — just the universal truth that everyone you know is guilty of something. No accounts. No ads. No tracking. Nothing leaves your phone unless you send it. Send the evidence.
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
Zustand
react-navigation
expo-image-picker
react-native-svg
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.
