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
Sci-Fi Themes
Customize your iPhone or iPad with Sci-Fi and Space wallpapers, Home Screen Image Widgets, and Clock/Date Widgets.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.3
55 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 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 Sci-Fi Themes: 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
Focus on curating a diverse range of unique sci-fi themes.
Assumption to check: Limited graphics selection compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more streamlined and visually appealing interface.
Assumption to check: Clunky user interface and navigation.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance and reduce loading times.
Assumption to check: Inconsistent performance and loading times.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance transparency around pricing and premium features.
Assumption to check: In-app purchases are not clearly communicated.
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
Customize your iPhone or iPad with Sci-Fi and Space wallpapers, Home Screen Image Widgets, and Clock/Date Widgets. INCLUDES: - 260+ square and rectangle Image Widget Backgrounds in many styles (or add your own images) - 130+ backgrounds or use a color gradient for the Clock/Date Widget - Icon packs in 13 styles with 2,000+ icons to set with the Shortcuts app - A large variety of wallpaper for Home / Lock screens to perfectly fit every size iPhone / iPad (Always adding more wallpaper, so check periodically) WIDGET DIRECTIONS Add a widget to your home screen in the usual way (long press the home screen and when in jiggly mode press the '+' on top. Scroll down to Sci-Fi Themes and select the size you want [do this for each size you want]). Long press the widget to change the theme from the images you set in the app. Some of the Sci-Fi styles are modeled after popular sci-fi shows and movies. The look like they should work, even with indecipherable meaning or function. And just like the props, iOS gives them the same functionality - NONE. It's parody how the sci-fi designers thought future displays would look while being impossible to use. *These are generic images. Please do not ask me in reviews or by mail to include any trademarked names, logos, images or other properties. I respect copyrights and will not include them. If used in tandem with my calculator widget, icon maker, widget maker, keyboard, and ringtones apps, you can really create a fuller theme.
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
Zustand
React Native Reanimated
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.
