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
Spesify
stop wasting time on complicated excel sheets! spesify automatically calculates your meal allowances according to german bmf guidelines 2025/2026 and creates legally compliant pdf receipts – in less than 3 minutes.
$3.99 · In-app purchases
PRICE
$3.99
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/
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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 Spesify: map the core Business 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 feature request system to gather user input.
Assumption to check: Lack of user reviews and feedback on features
Validate with people who use this workflow before building.
Hypothesis 2
Create an interactive tutorial for first-time users.
Assumption to check: Difficulty onboarding new users
Validate with people who use this workflow before building.
Hypothesis 3
Add integrations with popular project management tools.
Assumption to check: Limited integration with other tools
Validate with people who use this workflow before building.
Hypothesis 4
Enhance task editing with more options and flexibility.
Assumption to check: Inconvenient task management features
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
stop wasting time on complicated excel sheets! spesify automatically calculates your meal allowances according to german bmf guidelines 2025/2026 and creates legally compliant pdf receipts – in less than 3 minutes. perfect for: • business travelers & field staff • freelancers & self-employed • employees with frequent business trips • hr departments & accounting intelligent calculation • automatic allowances per bmf 2025/2026 • international travel (190+ countries) • city-specific rates (e.g., paris, london) • meal deductions (breakfast, lunch, dinner) • arrival/departure day rules (8-24h) • overnight allowances easy to use 1. create trip (destination, dates, transport) 2. select meals (provided by employer?) 3. generate pdf & email to accounting done! legally compliant documentation • pdf receipts according to german tax law • digital signature integration • direct submission to accounting • audit-proof & revision-safe professional features • transport modes: train, plane, car, company car • multi-day trips auto-calculated • centralized trip management • status tracking (draft/submitted)
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
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.
