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
MuvaMoji by Amber Rose
Presenting the official MuvaMoji app by Amber Rose
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.6
465 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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Combine features and design from your favorite apps.
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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 MuvaMoji by Amber Rose: 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
Expand emoji library and include user-generated content.
Assumption to check: Limited emoji variety compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching strategies.
Assumption to check: Inconsistent performance and loading times
Validate with people who use this workflow before building.
Hypothesis 3
Add functionality to share emojis directly to social media.
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Offer tiered pricing or subscription model for better accessibility.
Assumption to check: High pricing for premium 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
Presenting the official MuvaMoji app by Amber Rose. Featuring over 900 brand new emoji personally curated by Muva herself, browse from over a dozen categories of insane emojis you won’t find anywhere else. Ranging from LGBT pride to adult-themed emojis to insane animated emojis, you’ll be amazed at what’s included. Make sure to check back frequently as we will be updating the app with new content weekly. Features Include: -Over 900 emoji in brilliant high-definition -Brand new animated emoji -Customize the size your emoji sends at -Customize the skin colors -Optimized resolutions for use in iMessage -Send from keyboard (iOS8 or higher) or send directly from App Emojis are compatible across devices, so the receiver doesn’t need to have the app installed or even an iPhone to see them. For any questions or press inquiries please email [email protected] A NOTE ABOUT ALLOW FULL ACCESS: Rest assured that MuvaMoji will NEVER collect any personal information or transmit what you type over any network. Turning on “Allow Full Access” is simply an iOS requirement for third party keyboard. We take our user’s privacy very seriously. Should you not want to use the keyboard, all of the content can be accessed directly from the app instead. Use the hashtag #MuvaMoji ! Instagram- @MuvaMoji Twitter - @MuvaMoji Facebook- @MuvaMoji MuvaMoji.com © Copyright 2016 AppMoji Inc. & © Copyright 2016 Behind Her Shades Inc. All Rights Reserved.
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-native-gesture-handler
@react-native-async-storage/async-storage
expo-router
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.
