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
Pic Splitter
Use Pic Splitter to split your photos into grids for Instagram
$1.99
PRICE
$1.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.2
15 ratings · Below Average
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 included14 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 Pic Splitter: map the core Photo & Video 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
Introduce more customizable grid layouts and templates.
Assumption to check: Limited grid options for splitting photos.
Validate with people who use this workflow before building.
Hypothesis 2
Implement direct sharing capabilities to social media.
Assumption to check: Lack of sharing options directly within the app.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance image processing algorithms for better quality.
Assumption to check: Inconsistent image quality after splitting.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to split and save multiple images at once.
Assumption to check: No support for batch processing of multiple images.
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
Use Pic Splitter to split your photos into grids for Instagram. This is an essential photo app for your collection and will give your Instagram profile a professional look! This pro version has no ads whatsoever, so you can create your photos uninterrupted. This app allows you to split a photo and generate a grid of photo tiles which contain portions of the larger photo. Upload the generated tiles to Instagram to create the illusion of massive photos on your profile page. Purpose of the app: - Create photos that span your whole Instagram profile feed (up to 3x3 size) - Tile photos together to create a larger photo in your profile grid Features include: - Choose any grid pattern by selecting and deselecting tiles - Pinch and zoom to scale and crop your photos - Drag to position photo in the desired area of the grid
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
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Zustand
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@react-native-async-storage/async-storage
BUILD KIT DIFFICULTY
Starter
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.
