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
Light emoji: Memes & Stickers
tired of the same emojis on your phone? want to socialize easily? let’s try light emoji
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
102 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 Light emoji: Memes & Stickers: map the core Social Networking 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 advanced editing features like filters and effects.
Assumption to check: Limited customization options for memes and stickers
Validate with people who use this workflow before building.
Hypothesis 2
Optimize sticker pack loading with caching and preloading.
Assumption to check: Slow loading times for sticker packs
Validate with people who use this workflow before building.
Hypothesis 3
Include social features like commenting and sharing within the app.
Assumption to check: Lack of community features for sharing
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the purchase flow and provide clear explanations of what each tier includes.
Assumption to check: In-app purchases can be confusing
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
tired of the same emojis on your phone? want to socialize easily? let’s try light emoji. light emoji is a mobile app that integrates memes（including memes, emojis, stickers and more）download, custom emojis and wallpaper. it allows you to download all kinds of fun memes, create your own personality emojis, and easily find your favorite wallpaper. your phone, you call the shots! featured functions: --memes download and share: 5000+ popular and funny memes, plus exclusive resources for daily updates. whether it's dynamic or static memes, you can easily get them to make your conversation more interesting. in addition, you can share with one click to convey your happiness in time! -- memes editing: you can make edits on the original meme, such as adding text, decorating, changing the size, etc. make your memes more special! -- custom emojis: say goodbye to the same emojis, using the powerful functions of light emoji, you can freely create your own unique emoji. --massive wallpaper library: we have hd wallpapers in a variety of styles and themes, including beauty, christmas, scenery, characters, abstract, cartoons and more. we will update the resources in the app regularly, and there are more holiday limited themes and materials for you to unlock. we are committed to creating a richer and more interesting light emoji, and we will develop more new features and exclusive resources in the future, so stay tuned! thank you for using light emoji! privacy agreement : https://sites.google.com/view/lightemoji/ membership agreement : https://sites.google.com/view/lightemoji-membership/ terms of use：https://sites.google.com/view/light-emoji-term/ price : week : $9.99, first week: $1.99 month : $27.99, free 3-day trial quarter：$59.99 halfyear：$42.99 year : $98.99 about the auto-renewable subscription of light emoji: -payment will be charged to itunes account at confirmation of purchase. -subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. -account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. -subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's account settings after purchase.
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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
expo-image-picker
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.
