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
BASIC: programming language
This is "smart BASIC" - an extended version of popular Minimal BASIC programming language.
$11.99 · In-app purchases
PRICE
$11.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
17 ratings · Top 30%
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 included18 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for BASIC: programming language: map the core Developer Tools 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
Incorporate gamification elements such as quizzes and rewards.
Assumption to check: Limited interactive content compared to modern learning tools
Validate with people who use this workflow before building.
Hypothesis 2
Offer more free content or tiered pricing.
Assumption to check: Steep price point may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Add forums or chat features to enhance user engagement.
Assumption to check: Lack of community features for peer support
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
This is "smart BASIC" - an extended version of popular Minimal BASIC programming language. With "smart BASIC" you can create your own programs right on your iOS device. BASIC programs, written in "smart BASIC", can be published in the App Store as standalone applications using the "smart BASIC" SDK for Xcode. The "smart BASIC" programming language has many powerful features. INTERFACE: - buttons, text boxes, sliders, switches, browsers - pages for grouping your interface objects - support for additional TTF fonts - clipboard support - multitouch up to 11 simultaneous touches GRAPHIC: - advanced graphics functions - animated sprites, sprite sheet support MUSIC and SOUND: - play MP3, AIFF, WAV, MIDI, MOV and MP4 files - programmable MIDI synthesizer with 128 built-in instruments - support for additional sound fonts SF2 and DLS - speech synthesizer HARDWARE support: - GPS, compass - accelerometer - photo and video recording and more: - files - networking - integrated mathematics of complex numbers - customizable IDE - built-in documentation - ready-to-use examples of programs Visit the support forum to get assistance and to share your BASIC programs with other users.
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
React Native
Expo
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react-native-code-editor
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.
