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
Typster - Big Keys Keyboard
tired of frustrating typos and squinting at tiny keys? it's time to rediscover the joy of typing on your phone.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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/
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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 Typster - Big Keys Keyboard: map the core Utilities 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
Allow users to create custom layouts and themes.
Assumption to check: Lack of customization options for key layout
Validate with people who use this workflow before building.
Hypothesis 2
Implement haptic feedback for better user experience.
Assumption to check: Limited feedback on key presses
Validate with people who use this workflow before building.
Hypothesis 3
Add multi-language support for wider accessibility.
Assumption to check: No support for multiple languages
Validate with people who use this workflow before building.
Hypothesis 4
Offer various themes and styles to attract different user preferences.
Assumption to check: Basic design may not appeal to all users
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 frustrating typos and squinting at tiny keys? it's time to rediscover the joy of typing on your phone. introducing typster, the custom keyboard designed for comfort, clarity and accuracy. by providing larger, perfectly spaced keys, typster helps you type what you mean to type, reducing errors and increasing your speed. it's the simple, elegant solution to the fat-finger problem. spacious layout: enjoy extra-large keys that are easy to see and tap. improved accuracy: drastically reduce typos caused by hitting the wrong key. clean & simple design: a minimalist aesthetic that's easy on the eyes in both light and dark mode. privacy-focused: typster does not require "full access," so what you type stays completely private. quick setup: enable your new keyboard in seconds with our easy-to-follow guide. download typster today and transform your typing experience from a hassle into a breeze!
Written user reviews are not shown here. Check current App Store reviews >
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.
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BUILD KIT DIFFICULTY
Starter
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.
