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
DocCompare: PDF & Word Diff
Spot differences instantly
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
2 ratings · Below Average
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
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 DocCompare: PDF & Word Diff: map the core Business 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
Expand support to include other document types like TXT, RTF.
Assumption to check: Limited file types supported for comparison
Validate with people who use this workflow before building.
Hypothesis 2
Enhance UI with a more modern design and better user guidance.
Assumption to check: User interface is not very user-friendly
Validate with people who use this workflow before building.
Hypothesis 3
Optimize file handling and comparison algorithms to improve speed.
Assumption to check: Slow processing for larger files
Validate with people who use this workflow before building.
Hypothesis 4
Implement sharing features for users to easily send comparisons via email or social media.
Assumption to check: Lack of sharing options for comparisons
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
Spot differences instantly. 100% Private & Offline. Whether you are a lawyer reviewing contracts, a developer debugging code, or a student checking drafts, DocCompare is the ultimate tool for visual document comparison. Stop manual checking—let our advanced diff engine highlight every change for you. WHY DOCCOMPARE? Most comparison tools upload your sensitive data to the cloud. DocCompare works 100% offline. Your contracts, code, and essays never leave your device. KEY FEATURES Side-by-Side View: Spot additions (Green) and deletions (Red) instantly. Universal Support: Compare PDF, Word (.docx), Plain Text (.txt), and Markdown (.md) files. Diff Engine: High-precision text extraction designed for professionals. Dark Mode Ready: Liquid transitions and a modern interface that’s easy on the eyes. Smart History: Auto-save your previous comparisons locally for quick access. WHO IS IT FOR? Legal Professionals: Compare contract versions and catch subtle edits. Developers: Check Markdown documentation and code snippets. Writers & Editors: View changes between drafts without complex software. PRIVACY FIRST We believe in absolute privacy. DocCompare processes everything locally on your iOS device. We do not collect, store, or upload your documents. Download DocCompare today and spot the difference in seconds! Privacy Policy: https://emrekotun.github.io/doccompare_privacy_policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
Supabase
zustand
react-navigation
expo-document-picker
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.
