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
MSU Spartans Official Keyboard
msu spartans social hub, official keyboard and free stickers
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.2
15 ratings · Below Average
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 included16 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 MSU Spartans Official Keyboard: map the core Sports 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 more diverse themes and user-generated content.
Assumption to check: Limited customization options for keyboard themes
Validate with people who use this workflow before building.
Hypothesis 2
Optimize app for various device types and screen sizes.
Assumption to check: Inconsistent performance across devices
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate a wider array of emojis and customizable emoji packs.
Assumption to check: Lack of commonly used emojis
Validate with people who use this workflow before building.
Hypothesis 4
Enhance the restore purchases feature for better user experience.
Assumption to check: Difficulty in restoring purchases
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
msu spartans social hub, official keyboard and free stickers msu spartans official keyboard is an officially licensed app for enjoying the full msu experience. this app is owned and published by 2thumbz, a leading mobile app development company and a trusted collegiate publisher since 2003. go green! download the official msu spartans keyboard and discover its amazing features. use amazing icons that connect directly to msu athletics, have access to sports news, videos, social media (twitter, instagram, facebook), official spartans’ merchandise, game tickets, and msu fight songs. bonus – free exclusive official msu stickers within the msu custom keyboard. these exclusive stickers are specifically designed for msu fans, alumni, and students, and are exclusively found within this app. typically stickers packs are $1.99 and this official pack is free for true spartan fans! don’t miss it! msu custom keyboard provides you with the latest msu news and social media posts in one easy to connect social hub. stay in touch with spartan athletics at all times, right from your keyboard! represent the msu spartans with your messaging and connect to everything white and green with the msu spartans keyboard! we are privacy first! everything you type and your contact list is 100% private. this keyboard has been custom designed for michigan state university. you can easily use as your keyboard of choice. connect to the exclusive recommended retailer sites on your browser and any m-commerce within the network will support msu academics and athletics. why keep enriching big tech when you can rep your team with your everyday normal shopping from clothes to travel, from groceries to take-out. msu receives a small commission for purchases within the recommended msu network of retailers within the keyboard. this will not affect your retail purchase price. thank you and go green! college keyboards are officially licensed and published by 2thumbz, inc. all college content is copyrighted and owned by the respective university. college keyboards are developed by 2thumbz and keemoji, a revolutionary fan engagement company powering visual, social and commerce experiences with affinity brands. for customer support email [email protected] and [email protected] keemoji complies with the legal requirements as stated in the data protection act 2018; the general data protection regulation (gdpr), the california consumer privacy act (ccpa), and other laws and regulations relating to data protection and privacy when processing personal data. for more information, please review our privacy policy.
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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
Redux
React Navigation
Expo Image Picker
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.
