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
Bing Play
"Bing: Let's Play" is a collection of fun, beautiful learning games from the Award-Winning preschool series Bing
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
1 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 included15 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 Bing Play: 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 content offerings with more interactive activities and videos.
Assumption to check: Limited content variety for children
Validate with people who use this workflow before building.
Hypothesis 2
Implement thorough testing and quality assurance for a smoother experience.
Assumption to check: Occasional bugs with video playback
Validate with people who use this workflow before building.
Hypothesis 3
Add user profiles with preferences and recommendations based on activity history.
Assumption to check: Lack of personalization options
Validate with people who use this workflow before building.
Hypothesis 4
Create clearer prompts and explanations for in-app purchases to enhance user understanding.
Assumption to check: In-app purchase confusion
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
"Bing: Let's Play" is a collection of fun, beautiful learning games from the Award-Winning preschool series Bing. Download the app to meet Bing and friends in 18 mini activities. Specifically designed for children aged 2+, nursery, preschool or in Early Years Education. Our app is completely safe, ad-free and allows Bingsters to play Bing games either at home or on the go. Download this app on your child's device to start exploring with Bing: :: 18 Bing mini learning games and activities for everyday fun and play :: Get creative! Draw, color, stick and personalize your own Bing, Sula and Pando artboards. Share your creations with friends and family :: Stimulate and develop your Bingster's memory with beautifully themed pair games :: Practice motor skills and hand-eye coordination by solving puzzles based on Bing and friends Enjoy "Bing: Let's Play" for a one-off cost. No subscriptions, no ads - pay just once and enjoy unrestricted access! **Technical help** We do everything we can to make this app bug-free. However, if you are experiencing any technical difficulties, please email [email protected], and we'll do all we can to help fix things. Terms: https://us.bingbunny.com **About Bing** Produced by Acamar Films, with Dublin-based studio Brown Bag Films, Bing has seen extraordinary success since it launched in the UK in 2014, winning the International Emmy for Best Children’s Programme, the Writer’s Guild Award for best writing in a children's programme, and a BAFTA nomination for best children’s programme. Adapted specially for television, from the original books by Ted Dewan, Bing celebrates the joyful, messy reality of preschool life and finds the big stories in the little moments. Bing is broadcast in 130 territories worldwide and continues to “move and delight” Bingsters and their grown-ups through an increasing range of award-winning films, books, magazines, apps, consumer products, digital, live shows and cinema experiences.
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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
Zustand
Firebase
React Navigation
Axios
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.
