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
Documents - File Manager
Documents by Readdle is your file manager, document viewer, PDF editor, and archive extractor for iPhone and iPad
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
634,371 ratings · Top 5%
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 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.
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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 Documents - File Manager: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Documents by Readdle is your file manager, document viewer, PDF editor, and archive extractor for iPhone and iPad. Browse and organize your files, extract ZIP and RAR archives, edit and sign PDFs, and convert or compress anything — all from one app. FILE MANAGER - Browse, organize, and manage local files and folders in one fast file browser, rename and color-tag them for quick access - Import files from your computer, download files directly from the web browser, or work with iCloud, Dropbox, Google Drive, and other cloud drives without downloading them ZIP & RAR ARCHIVE EXTRACTOR - Unzip and extract ZIP and RAR archives directly on your iPhone or iPad - Create new ZIP archives to compress and share multiple files at once - Compress large files and folders to save storage space PDF EDITOR, VIEWER & CONVERTER - View and read PDFs, books, and scanned documents with a fast built-in viewer - Edit or modify existing text directly inside a PDF - Highlight, add notes, and place stickers on PDFs and books - Merge multiple PDFs into one, or split, rotate, and reorder pages - Convert PDF to Word, JPG, PNG, HEIC, and other formats SIGN DOCUMENTS - Add your signature to PDF contracts and forms in seconds - Fill out forms and place text, checkmarks, and initials anywhere on a document - Store signed contracts securely and access them from any device FILE CONVERTER & COMPRESSOR - Convert between PDF, DOCX, JPG, JPEG, PNG, HEIC, WEBP, and more in a few taps - Compress PDFs, photos, and files to reduce size for email or upload limits - Create PDFs from photos, scans, or documents, and convert them back to editable formats SCANNER - Scan receipts, books, and documents with a built-in OCR document scanner - Save scans as searchable PDFs directly in Documents or your cloud drive ALSO INSIDE - Transcribe audio and video to text, then edit or export the transcript - Use Smart Eraser to remove unwanted objects from photos - Play music and video, and transfer files to your Mac or PC over Wi-Fi Documents is an App Store Editors' Choice winner. Read more about our terms and conditions here: https://documents.io/legal/privacy https://documents.io/legal/terms
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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
Simplify navigation with a unified interface for file management.
Assumption to check: Complex navigation between multiple file types
Validate with people who use this workflow before building.
Hypothesis 2
Offer more cloud service integrations for better accessibility.
Assumption to check: Limited cloud integration options
Validate with people who use this workflow before building.
Hypothesis 3
Optimize file loading times with better caching mechanisms.
Assumption to check: Occasional lag in loading large files
Validate with people who use this workflow before building.
Hypothesis 4
Streamline the UI to improve user experience and reduce clutter.
Assumption to check: User interface can be overwhelming
Validate with people who use this workflow before building.
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
React Navigation
React Native WebView
zustand
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.
