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.
SciMath is a keyboard for iOS and iPadOS that gives you the symbols science, mathematics, and technical writing actually need - without copying from character maps, switching apps, or settling for approximations.
$2.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for SciMath Keyboard: map the core Utilities workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
SciMath is a keyboard for iOS and iPadOS that gives you the symbols science, mathematics, and technical writing actually need - without copying from character maps, switching apps, or settling for approximations. Every symbol is a proper Unicode character. It copies, searches, and renders correctly in every app that supports Unicode text. ONE-TIME PURCHASE. No subscription. No in-app purchases. No advertising. Ever. FOUR LAYERS ABC - Full QWERTY with extended diacriticals on long-press. French, German, Scandinavian, Spanish, Eastern European, and scholarly Latin variants. 123 - Numbers and punctuation. Long-press any digit for its superscript and subscript form. #+= - Brackets, operators, and currency symbols. sci - Scientific and mathematical symbols: Operators: degree, plus-minus, multiply, divide, approximately, not-equal, less-or-equal, greater-or-equal, square root, infinity Calculus: summation, integral, partial derivative, nabla, delta, h-bar, Angstrom, micro, ohm Logic and sets: pi, therefore, for-all, proportional, element-of, prime, perpendicular, and more Long-press sci keys for additional symbols: element-of opens not-element, subset, superset, union, intersection, empty set, and more. FOOTNOTE SYMBOLS The complete traditional footnote sequence for mathematical and legal writing, where superscript numbers would be confused with exponents or indices. KEY FLASH Toggle key flash in the SciMath app. When on, keys brighten immediately on contact with no delay, visible in direct sunlight. When off, standard iOS balloon previews appear. TRACKPAD MODE Hold the spacebar to move the text cursor precisely without tapping in the text. iPAD Pull-down secondary characters on every key. Full-width layout with more keys per row. Hide keyboard button. PRIVACY SciMath does not request Full Access and never will. It never logs keystrokes, never makes network requests, and contains no analytics or telemetry of any kind. Nothing you type ever leaves your device. THE SCIMATH APP A built-in composition workspace for building expressions at your own pace, then copying or screenshotting the result against a clean background. Light, dark, and system appearance modes.
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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
Assumption to check: Limited functionality compared to full calculator apps
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of user feedback on actions
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Not enough customization options for users
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.