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
File Manager - Folder Plus
"The ability to use multi touch to quickly move between viewing and editing files is also very good if you’re willing to utilize it." - Touch Reviews
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
242 ratings · Top 30%
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for File Manager - Folder Plus: 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
Implement drag-and-drop functionality for file organization.
Assumption to check: Difficulty organizing files within folders
Validate with people who use this workflow before building.
Hypothesis 2
Add support for more cloud services.
Assumption to check: Limited cloud storage integration options
Validate with people who use this workflow before building.
Hypothesis 3
Optimize file upload processes and provide progress indicators.
Assumption to check: Slow file upload speeds
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to change themes and layouts for personalization.
Assumption to check: Lack of customization options for appearance
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
"The ability to use multi touch to quickly move between viewing and editing files is also very good if you’re willing to utilize it." - Touch Reviews ***** Folder Plus is an In-App Multitasking Capable File Manager/Viewer/Editor, with 3-Finger Swipes You Switch between Tasks of File Managing, Viewing, Editing, etc QUICKLY ***** Folder Plus's Features - Total File Manager - Exclusive 3-Finger Task Switch - Lightning Fast USB File Transfer - Robust FTP/HTTP/WebDAV Sharing Server - Support Dropbox, Google Drive, Box, iCloud, OneDrive - Wide Range of Supported File Types - Document Reader - Text Editor - Audio Recorder - Simple Image Editor - Media Player - Structured Directory Browsing - View Restore of Long Documents - Zip Archiver (compress & decompress, secure with password encryption) - Long Press to Bring up Context Menu - Multiple Files/Folders Operations - Attach Files/Folders to Emails - Search - Auto Recovery of Editing Documents - Passcode Security - WiFi Authentication (FTP/HTTP/WebDAV) - User Account Manager (FTP/HTTP/WebDAV) - Send Files as Email Attachments - Open Files in Compatible Apps (iBooks, ...) - Open Supported Files Requested by Other Apps (Safari, Mail Attachments, ...) - Portrait/Landscape Support - Support Translation for Selected Text When Reading Documents (PDF, DOC, PAGES) - Support Thumbnails - Support AirPrint Supported File Types - PDF Files - Microsoft Office Files (Word, Excel and PowerPoint) - iWork Files (Pages, Numbers and Keynote) - Image Files (JPG, PNG, GIF, TIFF, PSD) - HTML Files - Web Archives - Plain Text Files - Audio Files (MP3, AAC, Apple Lossless, WAVE, AIFF, CAF) - Video Files (QuickTime, MP4, M4V, MPV) - Archive Files (.zip/.cbz, .rar/.cbr, .7z/.cb7; handle passwords, splits) Supported File Operations - Folder/Sub-Folder Creation - Text File Creation/Editing - Image File Creation/Editing - Audio Recording Creation - Take Photos & Video - Import Photos & Video from the Photos App - Export Photos & Video to the Photos App - Open as Text File - Move/Copy/Zip/Email/Delete on Single/Multiple File(s)/Folder(s) - Folder Merge during Copying/Moving - View File/Folder Properties - Rename Files/Folders - Search Files/Folders - Search within Search USB Transfer Client - Folder Plus USB Recommended FTP Clients - Cyberduck - Filezilla - Windows Explorer Recommended WebDAV Clients - Mac OS X's Finder - Windows Explorer - Cyberduck Recommended Browser for Web Transfer - Chrome - Safari - Firefox * All listed clients/browsers can be thought of file manager apps as well running on desktop to manage the files off device WiFi Transfer Requirements A WiFi connection is required to transfer document files between Folder Plus and FTP/HTTP/Web clients More features are on the way
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.
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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.
