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
Grungetastic
Rock your Photo with Unwell Textures and Tones
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
188 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 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 Grungetastic: 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
Add more advanced editing tools like layer support and batch editing.
Assumption to check: Limited editing features compared to full-fledged photo editors
Validate with people who use this workflow before building.
Hypothesis 2
Implement clear tutorials on premium features and benefits.
Assumption to check: In-app purchases can be confusing for users
Validate with people who use this workflow before building.
Hypothesis 3
Enhance filter algorithms for better compatibility.
Assumption to check: Some filters may not apply as expected on all images
Validate with people who use this workflow before building.
Hypothesis 4
Integrate cloud storage for user edits and projects.
Assumption to check: Lack of 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
Rock your Photo with Unwell Textures and Tones Grungetastic cranks your photos to 11 with seven hot and heavy looks: Classic Grunge, Bleached Grunge, Worn Pop, Worn Grunge, Gritty Grunge, Distressed and Pop Grunge. These seven fun and aggressive styles let you get down and dirty with your photos. Faster than you can say "filthy," these styles and Grungetastic's easy, hands-on interface will have you smushing delightfully unwell textures and tones with deeply satisfying contrasts, and explosively pleasurable pops for dangerously-addictive ultra-Grungy art. Grungetastic is for the Photographer that loves everything grungy! Shadows, Rubbing, Scratching, Ripping, Shredding, Stressing, Distressing, Popping, Exploding, Splatters, Smudging, Glowing, Glaring, Smoking – just some of the wildness that Grungetastic hooks you up with. GRUNGETASTIC MAKES DIRTY PHOTOS - REALLY DIRTY PHOTOS! SO DIRTY THAT THEY HAVE THEIR OWN LITTLE DIRT STORMS SWIRLING AROUND THEM—the styles are creative madness—or clearer visions of reality, whatever it is, they go to an artistic place few ever get. You can't get a cooler, hotter photo anywhere! ULTRA-GRUNGE STYLES Classic Grunge, Bleached, Pop Grunge, Pop Worn, Worn, Gritty and Distressed Grunge FEATURES Adjustable control over all aspect of the process: Color, multiple textures and borders INCLUDES Seven grungy styles: Classic Grunge, Bleached, Pop Grunge, Pop Worn, Worn, Gritty and Distressed Grunge "Randomize" button to quickly show off the power of the app A full library of textures and borders Quick, efficient, and very user-friendly interface Support for full-size images Presets with the ability to create custom presets Preview mode for quick workflow (Larger image rendered on save or when emailed) UNIVERSAL FEATURES All JixiPix Apps come with: Superior Customer Service, Support for High-Resolution Images & Output, Undo, Randomize Button, Quick Presets, the ability to create Custom Presets and Quick Preview. Our mobile version can Email and post directly to Facebook, Instagram, Twitter, and Tumblr. ‘Like us on facebook’ for tips & tricks, quick announcements and interaction with the Jixi team! https://www.facebook.com/pages/JixiPixcom/338304329530235?ref=hl *************** “JixiPix turns any photo into a masterpiece. The only requirement is art appreciation — we will take care of the rest!” JixiPix.com “Creative Tools for Creative Types” Photography | Artistic | Graphic Apps Mac • iPad • iPhone
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.
