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
Simply Watercolor
Create beautiful watercolor paintings automatically using photos taken on your iPhone or iPad
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
198 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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/
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 Simply Watercolor: 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
Include more advanced features like layer support and batch editing.
Assumption to check: Limited editing tools compared to professional apps
Validate with people who use this workflow before building.
Hypothesis 2
Provide more free filters and a clear value proposition for premium ones.
Assumption to check: Some filters are locked behind a paywall
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image handling and processing for better performance.
Assumption to check: Performance issues with larger images
Validate with people who use this workflow before building.
Hypothesis 4
Integrate with cloud services for backup of edits.
Assumption to check: Limited cloud backup options
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
Create beautiful watercolor paintings automatically using photos taken on your iPhone or iPad. Simply Watercolor uses real world techniques to bleed color throughout the painting naturally while still retaining detail. No artistic skill needed! Simply snap a photo, load it in the app and watch as it creates the painting for you. Want to personalize it? Use the panel of built-in controls to adjust detail, color and shades; or add an Outline for emphasis or an Artistic Finish for mood and tone. Simply Watercolor is the on-the-go version of our Watercolor Studio Mac App. FEATURES - Artificial Intelligence and Image Recognition - Powerful Wetness Algorithm - Detail and Shade Controls - Outline Controls with options to color - 54 Artistic Finishes to Warm or Cool overall painting and intensify color - Adjustable Watercolor Edge - One-Touch Settings to get you started - Save Preset option to save settings for future photos - Photo Cropping EVERY JIXIPIX PRODUCT FEATURES - Support for high-resolution images and output - Multiple Undo - Randomize Button - Quick Previewing - Customizable Styles - Superior customer service Contact us any time we are committed to your long-term satisfaction! JixiPix turns any photo into a masterpiece. The only requirement is art appreciation—we’ll take care of the rest! ________________________________________________________ JixiPix.Com Creative Tools for Creative Types Photography | Graphic | Artistic Apps Mac • iOS
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
Supabase
react-navigation
@supabase/supabase-js
expo-image-picker
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.
