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: PDF Editor,Convert
PDF Reader is a PDF software with all the tools and functions users need
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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.
JavaScript is required to complete mailbox verification.
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: PDF Editor,Convert: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Implement a robust folder structure and tagging system.
Assumption to check: Users often struggle with file organization in PDF apps.
Validate with people who use this workflow before building.
Hypothesis 2
Offer advanced annotation tools and text editing features.
Assumption to check: Editing capabilities can be limited in existing PDF apps.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the import process with intuitive file picker options.
Assumption to check: Migration and importing from other formats is often cumbersome.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear, upfront pricing and feature explanations.
Assumption to check: Subscription models can be confusing and convoluted.
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 is a PDF software with all the tools and functions users need. In addition to viewing and printing PDFs with Cos PDF, users also have access to a variety of commonly used tools covering annotation, file format conversion, text insertion, stamping, signing, and page editing, bringing you the best PDF reading & editing experience with a one-stop tool set. PDF Reader could help you to: View PDFs easily: • View PDF in single page or two pages mode • Print PDF documents • Zoom in/out the view of PDFs Add Annotations as you want: • Highlight/ Underline/ Strikeout texts with customized colors • Insert shapes including rectangle, circle, line, and arrows • Write on PDFs with the Ink function • Type in texts with the font size you need • Annotate PDFs with notes Sign and Stamp PDFs: • Sign PDFs with keyboard, trackpad, or image file • Stamp PDFs with preset images, or customize one you want Convert PDFs to/from Other File Formats • Convert PDF to Word, Excel, PNG, TXT • Convert Word, Image to PDF Page Reorganization: • Add blank pages at any place • Reorder pages with simple drag & drop • Rotate pages clockwise or counterclockwise • Add/delete/extract pages with PDFs • Split/merge PDFs PDF Compressor • Compress PDF to reduce the file size SUBSCRIPTION OPTIONS Experience the full performance of PDF Reader with yearly or life-time plans. App Plan Options: • Yearly Plan: billed yearly at $29.99/year • Life-time Plan: one-time payment of $49.99 Price may vary by location. Premium Features: Both plans grant you access to all premium features, including • Convert PDF to Word, Excel, PNG, and TXT • Convert image or Word to PDF • Manage pages by deleting, inserting, extracting, and reordering • Merge, split, and compress PDFs Terms of service: http://www.buildgreatapps.com/terms-and-conditions/ Privacy Policy: http://www.buildgreatapps.com/privacy-policy/ Need assistance? Contact us at http://www.buildgreatapps.com/contact-us/
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
zustand
react-native-pdf
expo-document-picker
expo-camera
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.
