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
EmoGuard - Keyword Blocker
EmoGuard is a browser extension that allows you to block text or elements you don't want to see on any website.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
19 ratings · Top 50%
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 EmoGuard - Keyword Blocker: 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 categorize keywords or set alerts for specific keywords.
Assumption to check: Limited customization options for blocked keywords
Validate with people who use this workflow before building.
Hypothesis 2
Implement more prominent notifications with sound or custom alerts.
Assumption to check: Lack of visual feedback for notifications
Validate with people who use this workflow before building.
Hypothesis 3
Provide an edit option for keywords in the block list.
Assumption to check: No ability to edit blocked keywords
Validate with people who use this workflow before building.
Hypothesis 4
Add a search function to filter through blocked keywords.
Assumption to check: Difficulties in managing large block lists
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
EmoGuard is a browser extension that allows you to block text or elements you don't want to see on any website. ▶ KEY FEATURES • Keyword blocking: Block keywords you don't want to see • Customizing CSS selectors: Pursue your own way of blocking • Sync feature: Sync data across all your devices using Dropbox • Cross platform: Supports desktop and some mobile browsers ▶ Why use EmoGuard? • Get over the slander: There are all kinds of people in the world. You can't change them, but you can control the information on the web pages you view with EmoGuard. • Avoid any spoilers: Spoilers sneak up on you like assassins and suddenly appear. Don't worry anymore, you can prevent it by adding the relevant words to EmoGuard. • Focus on what matters: Once people feel bad, they spend their time on distractions. So save your emotions with EmoGuard and use your precious time for what matters. It's time to bring back the fun web. Happy Internet Life! ▶ More Official Website: https://emoguard.app/ Terms of Use: https://emoguard.app/docs/terms-of-use Privacy Policy: https://emoguard.app/docs/privacy-policy ▶ Attribution Twemoji graphics made by Twitter, Inc and other contributors are licensed under CC-BY 4.0: https://creativecommons.org/licenses/by/4.0/
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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
React Navigation
React Native Async Storage
Expo Notifications
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.
