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
PDF Reader - Smart Reader
PDF Reader - Smart Reader is a fast, lightweight, and powerful document viewer that allows you to read PDF, Word, Excel, and PowerPoint files all in one place
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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 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 PDF Reader - Smart Reader: map the core Productivity 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
Include a rich set of annotation tools such as shapes, colors, and text options.
Assumption to check: Limited annotation features compared to desktop apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement folders or tags for better organization.
Assumption to check: Difficult PDF file management
Validate with people who use this workflow before building.
Hypothesis 3
Offer cloud integration for accessibility on multiple devices.
Assumption to check: No cloud sync feature
Validate with people who use this workflow before building.
Hypothesis 4
Optimize file loading and rendering for smoother performance.
Assumption to check: Slow PDF loading times
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
PDF Reader - Smart Reader is a fast, lightweight, and powerful document viewer that allows you to read PDF, Word, Excel, and PowerPoint files all in one place. Designed for efficiency, it helps you manage and view your documents seamlessly without needing an internet connection. Key Features: All-in-One Viewer: Open and read PDF, DOCX, XLSX, PPTX, and TXT files instantly. Smart File Manager: Automatically scans and organizes all documents stored on your device. Fast & Smooth: Optimized for large files, ensuring quick page loading and smooth scrolling. Privacy Focused: Your documents remain on your device. We process everything locally and never upload your files to any server. Search & Bookmark: Easily find your documents with a powerful search tool and save important pages for later. Dark Mode Support: Comfortable reading experience in any lighting condition. Share Easily: Share your documents via email or social media with just one tap. Whether you are a student or a professional, PDF Reader - Smart Reader is the perfect tool for your daily document needs. Download now and simplify your digital life!
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-native-pdf
react-navigation
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.
