App Overview

BAFinancePrime icon

BAFinancePrime

Ernest Brock · Finance

BA Finance Prime offers an iPhone and iPad version that emulates the TI BA II Plus Professional, all within a single application

$8.99 · In-app purchases

PRICE
$8.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
34 ratings · Top 15%

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/
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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.

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.

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

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for BAFinancePrime: 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 more straightforward and secure bank linking via Plaid.

Assumption to check: Difficulty in linking bank accounts securely.

Validate with people who use this workflow before building.

Hypothesis 2

Enhance automatic transaction categorization using machine learning.

Assumption to check: Manual categorization of transactions can be tedious.

Validate with people who use this workflow before building.

Hypothesis 3

Include more detailed analytics and trends visualization.

Assumption to check: Lack of insightful analytics for spending habits.

Validate with people who use this workflow before building.

Hypothesis 4

Add advanced budget tracking capabilities with alerts and recommendations.

Assumption to check: Limited budget tracking 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

BA Finance Prime offers an iPhone and iPad version that emulates the TI BA II Plus Professional, all within a single application. This calculator is meticulously crafted to replicate the original’s layout, functionalities, and algorithms. If you are a student or a finance or real estate professional who is already familiar with the BA II Plus Professional, you will find this calculator highly intuitive and familiar. Additional Features: • Audit Tape: Saves all calculations and can be shared via email, text message, or printed. • iPad Layout: Includes slide-over, split-view, and multitasking screen layouts. • Continuous Display of Time Value of Money Variables: Provides confidence in problem setups. Results can be reviewed, annotated, and forwarded to clients using the built-in electronic audit tape via email. • Preservation of Calculator and Worksheet Contents: Remains saved between computing sessions. If interrupted or left to work in another application, the next time BA Finance Prime is started, it will be restored to the previous state. Calculations: • Time Value of Money • Cash Flow Analysis (NPV, NUS, PB, DPB, IRR, MIRR) • Amortization Schedules • 11 Worksheets: Includes bonds with duration and Macaulay duration, breakeven analysis, cash flow analysis, dates, percentages, depreciation, interest conversions, memory, cost-sell-margin, and statistics. • Full Set of Scientific Calculations: Includes logs and trigonometric functions. • Chain or Algebraic Calculation Bonus Features: • Built-in User Manual with Sample Problems • ? Key Help for All Key Functions • Converter Mini Application with Thousands of Financial, Real Estate, Scientific, Engineering, and Other Commonly Used Conversion Factors, Including Up-to-Date Currency Rates • Electronic Audit Tape with Email Capability • Automatic Generation of Amortization Tables and Depreciation Schedules • LOG, 10^x, π, E • Compatibility with iPhone and iPad

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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 Navigation
Supabase
Victory Native
Zustand
React Native Gesture Handler
Expo
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.