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
Bulk Image Compressor
Introducing the ultimate solution for efficient image management on your devices
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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 included15 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 Bulk Image Compressor: map the core Graphics & Design 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 for more formats like TIFF, BMP, etc.
Assumption to check: Limited image formats supported for compression
Validate with people who use this workflow before building.
Hypothesis 2
Provide clearer guidance on quality settings and their impact.
Assumption to check: Compression quality adjustments may be unclear
Validate with people who use this workflow before building.
Hypothesis 3
Implement progress indicators during the compression process.
Assumption to check: No batch processing feedback during compression
Validate with people who use this workflow before building.
Hypothesis 4
Simplify UI design for better user navigation and experience.
Assumption to check: User interface can feel cluttered
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
Introducing the ultimate solution for efficient image management on your devices. This user-friendly app is designed to effortlessly compress various image and video formats, helping you save valuable storage space without compromising on quality. Whether you're a professional photographer, a social media enthusiast, or simply someone trying to organize a vast photo library, Bulk Image Compressor caters to all your needs. Key Features: - Versatile Compatibility: Works with a wide range of image and videos formats including JPG, PNG, BMP, MP4, MOV and more. - Batch Compression: Easily select and compress multiple images and videos simultaneously. - Customizable Quality: Choose your desired level of compression to balance image quality and file size. - Quick and Efficient: Compress images and videos quickly without losing crucial details. - Intuitive Interface: Simple and easy-to-navigate design, perfect for users of all skill levels. - Storage Management: Helps in reducing file size, which is essential for optimizing device storage. Download Bulk Image Compressor today and experience the most convenient way to manage and compress your images on the go!
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
Zustand
react-navigation
expo-image-picker
expo-file-system
BUILD KIT DIFFICULTY
Intermediate
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.
