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
Logic Kit
the "logic kit" app helps you to simplify boolean algebra expressions by using boolean algebra laws, solve karnaugh map, truth table, sum of product (sop), product of sum (pos), convert numbers from any base to any ba...
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
8 ratings · Top 5%
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/
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 Logic Kit: map the core Education 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
Expand the range of topics and question types.
Assumption to check: Limited variety of exercises and quizzes
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate forums or discussion boards for users.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline downloads for course materials.
Assumption to check: No offline access to courses
Validate with people who use this workflow before building.
Hypothesis 4
Offer more flexible pricing options or a freemium model.
Assumption to check: High subscription cost
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
the "logic kit" app helps you to simplify boolean algebra expressions by using boolean algebra laws, solve karnaugh map, truth table, sum of product (sop), product of sum (pos), convert numbers from any base to any base, do arithmetic between these numbers, find complements, and more. all this is provided with a detailed step-by-step to learn while solving. boolean algebra features • simplify boolean algebra expression using boolean algebra laws and show the detailed solution step-by-step. • simplify the boolean algebra expression using karnaugh map and show the detailed solution step-by-step. • solve karnaugh map by inserting values (sop, pos) directly in the map with the ability to use "don't care". • find the truth table from the boolean algebra expression and show the detailed solution step-by-step, or easily insert values (sop, pos) directly in the truth table and get the boolean algebra expression consisting of minterms or maxterms. • find sop and pos from the boolean algebra expression and show the detailed solution step-by-step. • deal with the sum of product (sop) and the product of sum (pos), and get the boolean algebra expression consisting of minterms or maxterms. • easily show a circuit diagram for any simplified boolean expression using and-or gates, nand gates only, or nor gates only. • in the boolean algebra expressions you can use all the english letters (26 variables) and 11 different logic gates (and, or, not, nand, nor, xor, xnor, imply, not-imply, converse, not-converse). • truth table and karnaugh map can solve up to 10 variables. • special design keyboard for the boolean algebra to write expression variables and gates easily. number systems features • convert numbers (with decimal points) from any base to any base (binary, octal, decimal, hexadecimal, etc.) up to base 36 and show detailed step-by-step. • find r's and (r-1)'s complement for any base up to base 36 and show detailed step-by-step. • do arithmetic (plus, minus, multiplication, and divide) between numbers in different bases and get the solution with detailed step-by-step. • special design keyboard for the number systems that interact with the selected bases to write easily with no mistakes. more features • the logic kit app works with no need for an internet connection, and there are no ads. • there will be many added features in the upcoming updates.
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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
Supabase
React Navigation
react-native-video
react-native-paper
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.
