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
Unsheet
Unsheet is a sentence-driven budget calculator
$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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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/
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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 Unsheet: map the core Finance 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 automatic transaction categorization and bank linking.
Assumption to check: Users often find tracking expenses tedious and time-consuming.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce graphs and charts for better insights.
Assumption to check: Limited visualization of financial data can make it hard to understand spending habits.
Validate with people who use this workflow before building.
Hypothesis 3
Clearly outline features available in each subscription tier.
Assumption to check: Subscription models can confuse users about what features are included.
Validate with people who use this workflow before building.
Hypothesis 4
Provide templates or tips for budget creation based on user spending patterns.
Assumption to check: Users may struggle with setting budgets effectively.
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
Unsheet is a sentence-driven budget calculator. You fill in the blanks, it does the math. Pick an action. Choose how to measure it. Set a goal. Unsheet builds the question as you go and gives you a plain-English answer with the math shown. If I pay off my credit card, how long until I can? If I lose my job, how long could I last without income? If I get a roommate, how long until I can take a trip? If I cut my phone bill, how much sooner could I reach my savings target? If I put a lump sum toward my car loan, how much sooner could I pay it off? Add your income, bills, and debts once. Then ask as many what-ifs as you want. Change a number, the answer updates instantly. No bank sync. No account. Your data stays on your device. One-time purchase - Unsheet will never charge you again.
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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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.
