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
BlockLab
Your phone is designed to distract you
$2.99 · In-app purchases
PRICE
$2.99
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 included15 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 BlockLab: 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
Implement a feedback system to gather user reviews and improve features.
Assumption to check: Lack of user reviews and feedback.
Validate with people who use this workflow before building.
Hypothesis 2
Add advanced features like recurring tasks and collaboration.
Assumption to check: Limited features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate with Google Calendar or iCloud for better task management.
Assumption to check: No sync options with other calendar apps.
Validate with people who use this workflow before building.
Hypothesis 4
Design a more minimalist and user-friendly interface.
Assumption to check: User interface may feel cluttered.
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
Your phone is designed to distract you. BlockLab is designed to stop it. BlockLab uses Apple's Screen Time framework to block distracting apps during focus sessions and scheduled blocks — the same system-level protection built into iOS, with a cleaner, more intentional interface built around how you actually work. Focus your way Create Focus Profiles with the exact apps you want blocked. Start a manual session when you need to lock in, or set a recurring schedule so blocking happens automatically — no willpower required. Real blocking, not suggestions When a session is active, blocked apps are shielded at the system level. There's no sneaking past it. Grace Period Need a moment before a block kicks in? BlockLab gives you a grace period so you can wrap up what you're doing before focus mode takes over. Pay once. Use forever. No subscription. No monthly fee. No paywalled features. Buy BlockLab once and it's yours. BlockLab is for people who want a simple, honest tool — not an app that gamifies your attention or monetizes your habits.
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
Advanced
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.
