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
BA Financial Calculator Max
Turn your phone into a professional financial calculator.
$0.99
PRICE
$0.99
No 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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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Turn your phone into a professional financial calculator. BA Financial Calculator Max is a full-featured BA II Plus-style financial calculator designed for finance professionals, students, analysts, and CFA/FRM candidates. It combines familiar financial calculator workflows with a fast, modern mobile experience, making it useful for finance study, investment analysis, business calculations, and everyday professional work. KEY FEATURES Time Value of Money (TVM) - Present Value (PV) - Future Value (FV) - Number of Periods (N) - Interest Rate (I/Y) - Payment (PMT) - END / BGN payment modes - Configurable periods per year Cash Flow Analysis - Uneven cash flow calculations - Net Present Value (NPV) - Internal Rate of Return (IRR) - Cash flow frequency support Loans and Amortization - Loan and mortgage calculations - Principal and interest analysis - Amortization calculations - Payment planning Bond Calculations - Bond price calculations - Yield calculations - Bond analysis tools Statistics - Statistical calculations - 1-variable and 2-variable analysis - Common statistical workflows Depreciation - Depreciation calculations - Common depreciation methods Business and Finance Tools - Percent change - Breakeven analysis - Profit margin calculations - Interest conversion - Date calculations Scientific Functions - Square root - Square - Reciprocal - Power functions - Natural logarithm (LN) - Exponential functions - SIN, COS, and TAN - Factorial - Permutations (nPr) - Combinations (nCr) FAMILIAR FINANCIAL CALCULATOR WORKFLOW The interface is designed around familiar BA II Plus-style key sequences and financial workflows, making it easy to transition from a traditional financial calculator. Use it for: - Investment analysis - Loans and mortgages - Corporate finance - Accounting - Banking and financial services - Business analysis - Finance and economics courses - CFA and FRM exam preparation BUILT FOR PROFESSIONAL AND ACADEMIC USE Whether you are analyzing an investment, calculating the future value of savings, evaluating cash flows, working with bonds, reviewing statistics, or preparing for a finance exam, BA Financial Calculator Max puts the tools you need in your pocket. FAST, CLEAN, AND CONVENIENT - Responsive calculator keypad - Familiar financial calculator layout - Configurable decimal precision - DEG / RAD angle modes - END / BGN payment timing - Multiple language support - Designed for repeated daily use Practice, study, and solve financial problems without carrying a physical calculator. DISCLAIMER This app is an independent financial calculator and study tool. It is not affiliated with, endorsed by, or sponsored by Texas Instruments, CFA Institute, GARP, or any other calculator manufacturer or examination organization. BA II Plus is a trademark of Texas Instruments. CFA is a trademark of CFA Institute. FRM is a trademark of the Global Association of Risk Professionals (GARP). Mobile applications may not be permitted for use during official examinations. Please refer to the relevant examination provider's official calculator policy. For questions or feedback: [email protected]
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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.
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
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
