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
Elmo Loves ABCs
Elmo loves this app! It has songs and videos about letters
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
141 ratings · Top 30%
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 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 Elmo Loves ABCs: map the core Education 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
Add more diverse and engaging games to enhance learning.
Assumption to check: Limited games and activities for users.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more robust progress tracking system with visual graphs.
Assumption to check: Difficulty in tracking progress over time.
Validate with people who use this workflow before building.
Hypothesis 3
Improve transparency around what additional content can be purchased.
Assumption to check: In-app purchases can be unclear or frustrating.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce different learning modes such as quizzes, songs, and interactive storytelling.
Assumption to check: Lack of variety in teaching methods.
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
Elmo loves this app! It has songs and videos about letters. It has coloring pages and games about letters. It has all the letters from A to Z! Elmo even made a new alphabet song for it. Elmo thinks it’s the best ABC app ever! Come on, explore the alphabet with Elmo! FEATURES • Slide, sweep, swipe, touch, trace and dig to discover over eighty classic Sesame Street clips, seventy five Sesame Street coloring pages, and four different ways to play hide and seek! • Touch and trace your favorite letter to unlock its surprises. • Tap on the star button to discover even more letter activities. • Personalize by adding your own photos and videos to the game. • ABCs tracker for grown-ups to see how your child is doing. • Ability to purchase even more great letter content and holiday surprises. LEARN ABOUT • Letter identification (uppercase and lowercase) • Letter sounds • Letter tracing • Art and creativity • Music appreciation TIPS • If you wish to personalize Elmo Loves ABCs by adding your own content, remember to complete all the fields: name, recording, photo, and video! If you do not have all four, your content will not appear in the game. • PLEASE NOTE: Personalized photos and videos, are not backed up to the device library. To save or access this content, use the device's camera to create your content. ABOUT US Sesame Workshop’s mission is to use the educational power of media to help kids everywhere grow smarter, stronger, and kinder. Delivered through a variety of platforms, including television programs, digital experiences, books and community engagement, its research-based programs are tailored to the needs of the communities and countries they serve. Learn more at www.sesameworkshop.org. PRIVACY POLICY The Privacy Policy can be found here: https://sesameworkshop.org/about-us/legal/privacy-policy/ CONTACT US Your input is very important to us. If you have any questions, comments, or need help, please contact us at: [email protected].
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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
Zustand
React Navigation
TypeScript
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.
