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
Hashify
Meet Hashify, the ultimate app for calculating hashes and managing encodings directly from your iPhone or iPad
$2.99 · In-app purchases
PRICE
$2.99
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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What's included15 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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Hashify: 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
Offer a wider variety of hash algorithms and user-customizable options.
Assumption to check: Limited hash type options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement sharing options to social media or messaging apps.
Assumption to check: No sharing functionality for hashes
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to create accounts and sync their hash history across devices.
Assumption to check: No user accounts or cloud sync
Validate with people who use this workflow before building.
Hypothesis 4
Provide comprehensive guides and tooltips for users.
Assumption to check: Lack of detailed documentation or help section
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
Meet Hashify, the ultimate app for calculating hashes and managing encodings directly from your iPhone or iPad. With an intuitive and modern interface, Hashify is perfect for IT professionals, developers, and anyone who needs to work with hash algorithms and encodings quickly and easily. Key Features - Encoding and Decoding Modes: Easily switch between encoding and decoding with a single tap. - Real-Time Calculation: Results are updated instantly as you type. - One-Tap Copy: Copy results with just one click for quick use. - Multilingual Support: Available in English and Italian. Supported Hash Algorithms - MD5, SHA1, SHA256, SHA384, SHA512. - Perfect for one-way calculations, data integrity checks, and security purposes. Reversible Encodings - Base64, Base32, Hex, URL Encoding, ROT13. - Ideal for quickly and securely converting data. Smart Features - Modern UI: Smooth navigation with horizontal scrolling to select algorithms. - Monospace Font: Maximum readability for your results. - Clear Indicators: Instantly see whether an algorithm is reversible or one-way. - Detailed Information: Informative sheets explaining algorithms and encodings. Feedback and Validation - Localized error messages to assist you at every step. - Intelligent handling of invalid inputs. Why Choose Hashify? Whether you're working on a development project, verifying data integrity, or learning about hashes and encodings, Hashify is the app for you. No distractions, no ads—just reliable and professional tools. Download Hashify today and experience the power of simplicity!
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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 Native
Expo
React Navigation
Async Storage
React Native Paper
React Native Clipboard
BUILD KIT DIFFICULTY
Starter
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.
