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 123s
This is an app full of games, activities, and videos, which will help teach your child about numbers and counting.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
91 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.
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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 Elmo Loves 123s: 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
Introduce new games regularly and user-generated content.
Assumption to check: Limited content variety, leading to quick boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Implement robust user profiles with detailed progress tracking.
Assumption to check: Difficulty in tracking individual progress.
Validate with people who use this workflow before building.
Hypothesis 3
Add interactive elements like rewards and challenges.
Assumption to check: Limited interaction and engagement for young users.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the purchase process and clearly present value.
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
This is an app full of games, activities, and videos, which will help teach your child about numbers and counting. Elmo loves exploring numbers! This app has songs and videos about numbers. It has coloring pages and games about numbers. It has all the numbers from 1 to 20! Elmo’s friend Abby is here, too! Come on! Explore numbers with Elmo and Abby! FEATURES • Trace your favorite numbers to unlock surprises. • Slide, swipe, touch and trace to discover sixty classic Sesame Street clips, sixty coloring pages, hide-and-seek, jigsaw puzzles, counting games and more! • Touch the Abby button to play number games with Abby and her friends. • 123s tracker for grown-ups to see what your child is learning. LEARN ABOUT • Number identification • Number tracing • Counting groups of objects • Addition & Subtraction • Problem Solving • Art and creativity And if you enjoy learning your 123s, you’ll love learning your ABCs! Check out the Parents' Choice Silver Award winner “Elmo Loves ABCs” in the App Store. 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
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BUILD KIT DIFFICULTY
Expert
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.
