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.
Transform numbers between 6 different number systems instantly with Radix
$0.99 · 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 Radix Converter: 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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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 number of bases for conversion
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No history of past conversions
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of user customization
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No educational content or explanations
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Transform numbers between 6 different number systems instantly with Radix - the most elegant and powerful base converter for iOS. Perfect for programmers, developers, computer science students, and anyone working with different number bases. INSTANT REAL-TIME CONVERSION • Type once, see all 6 formats simultaneously • No "Convert" button needed - updates as you type • Smart validation with immediate feedback • Handles large numbers efficiently 6 NUMBER SYSTEMS SUPPORTED • Binary (Base 2) - Low-level programming, bit operations • Octal (Base 8) - Unix permissions, legacy systems • Decimal (Base 10) - Standard everyday numbers • Hexadecimal (Base 16) - Memory addresses, colors, encoding • Base32 - Data encoding, identifiers, tokens • Base36 - Compact alphanumeric representation INTELLIGENT FEATURES • Auto-convert when switching between bases • One-tap copy with optional prefixes (0x, 0b, 0o) • Input validation prevents errors • Clear button for quick reset • Keyboard optimized for number input BEAUTIFUL INTERFACE • Unique gradient color for each number system • Smooth animations and transitions • Full Dark Mode support • Clean, distraction-free design • Optimized for all iPhone sizes 6 LANGUAGES INCLUDED • English • 中文 (Chinese Simplified) • 日本語 (Japanese) • Português (Portuguese) • Español (Spanish) • Русский (Russian) PERFECT FOR • Software developers debugging binary/hex data • Computer science students learning number systems • System administrators working with octal permissions • Embedded systems engineers • Network programmers • Security researchers • Anyone needing quick base conversions WHY RADIX? Unlike cluttered converters with ads and hidden features, Radix focuses on doing one thing exceptionally well. All conversions display simultaneously - no tapping through tabs or menus. No advertisements ever No subscription required No internet connection needed No data collection All features unlocked TECHNICAL HIGHLIGHTS • Native SwiftUI for smooth performance • Supports full Base 36 alphanumeric characters (0-9, A-Z) • Accurate conversion algorithms • Format preservation (uppercase/lowercase) • Lightweight app under 5MB • Works completely offline • Instant app launch PRIVACY FIRST • Zero data collection • No analytics or tracking • All conversions happen on your device • No servers involved • Your privacy guaranteed COMMON USE CASES → Convert hex color codes to decimal RGB → Debug binary network protocols → Understand memory addresses in hex → Calculate Unix file permissions (octal) → Learn computer science fundamentals → Work with encoding schemes (Base32/36) → Decode hexadecimal data streams → Quick reference for programming tasks WHAT USERS SAY "Exactly what I needed - simple, fast, and beautiful" "Best base converter on the App Store" "Perfect tool for CS students" "Clean interface, no ads, works great" SUPPORT Questions or feedback? Contact us through App Store or visit our support page. We respond to every message! Download Radix today and experience the fastest, most elegant way to convert between number systems on iOS.
Written user reviews are not shown here. Check current App Store reviews >
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.