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
Category Tabs for Google Keep
Tired of wasting time looking look through and re-sorting all of your notes on Google Keep?
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
3 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 included13 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 Category Tabs for Google Keep: map the core Productivity 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 features like color coding, reminders, and sorting options.
Assumption to check: Limited functionality for note management and categorization
Validate with people who use this workflow before building.
Hypothesis 2
Redesign UI for improved usability and aesthetics.
Assumption to check: Poor user interface and experience as indicated by low ratings
Validate with people who use this workflow before building.
Hypothesis 3
Implement reliable cloud sync and backup options.
Assumption to check: Lack of syncing with cloud services for backup
Validate with people who use this workflow before building.
Hypothesis 4
Introduce sharing and collaboration tools for users.
Assumption to check: Inadequate support for collaboration on notes
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 wasting time looking look through and re-sorting all of your notes on Google Keep? With Category Tabs for Google Keep™, you can now sort your new and existing notes by color. When you want to view the notes you have sorted by color, simply click on the note color you wish to view. If you would like to view your you entire collection of notes/checklists, there is an “All” option next to the color options (this option is set by default). Category Tabs for Google Keep™ seamlessly integrates into the page and the options to look at your notes/checklists in list view or gird view is still available. The ability to post a quick note/list/picture is still available as well and is still placed in the same spot as it usually is. This application supports all the colors offered by Google Keep. You can access the settings by opening the menu in google keep, and hit “Customize Categories”
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.
SUGGESTED BUILD STACK
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Expo
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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.
