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
Depello - color splash photos
It's super quick and super easy
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
733 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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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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 Depello - color splash photos: 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
Offer a wider range of customizable filters.
Assumption to check: Limited filter options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image handling and processing.
Assumption to check: Performance issues with large images
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more robust undo/redo system.
Assumption to check: Difficulties in undoing edits
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the subscription model and clarify benefits.
Assumption to check: In-app purchase confusion
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
It's super quick and super easy. No finger painting is needed! All you have to do is tap on the color you want to highlight! Depello makes it possible to create stunning and effectful grayscale images with just a tap. Depello is a photo editing tool which converts your images and photos into black and white but preserves and highlights a color of your choice using state of the art computer vision algorithms. Make that red apple stand out among all the green ones! The user interface is easy to use with minimal controls for smooth navigating and pinch to zoom features etc. Want to create amazing looking photos with the tap of a finger? Look no further, Depello is the app for you! It's the best and easiest colorsplash / colorpop / recolor tool in the App Store! WHY USE DEPELLO: • Color splash/Color pop any image and and start highlighting colors • Pinch to zoom and just tap the color of your choice • Peek and pop with full 3D-touch supports on app icon and in image album • Stay creative on iPhone, iPad and your Mac! Depello supports them all! • Tell the world about your latest creations on Instagram and Facebook PREMIUM FEATURES: • Change the color of the highlighted color. Make that yellow banana turn red! • Draw with your fingers to manually make some parts of the photo into black & white. Questions? Problems? Ideas? Please get in touch: [email protected]
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.
