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
Handy - Live Widget Wallpaper
Get awesome iOS theme icon packs from independent artists!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
25,456 ratings · Top 15%
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 Handy - Live Widget Wallpaper: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Get awesome iOS theme icon packs from independent artists! No more Shortcuts! Download now and enjoy aesthetic icons, animate widgets and live wallpapers with One-Click! 1st iOS Theme Platform that connects artists and users. Key features: ■ No more shortcuts! Tired of creating icons one by one through shortcuts? Handy helps you link and install icons with One-Click. Most of the themes are pre-linked by the artists and no more linking required. ■ Manage themes all in one place! Want to organize all your themes? Handy have you covered. All themes you own will be stored in your folder with previews. Changing themes never become this easy. ■ Be creative! Try to create your own theme? Handy provides a tool to help you organize your icons, widgets and wallpapers. You can generate Live Wallpapers from videos or any of your Live Photos. ■ Easy sharing! Find it difficult to share your design? Handy can generate a share link for your theme or your portfolio. All your friends can see your amazing designs from the link. ■ Make money! Creativity should be valued! Handy helps you sell your themes all over the world. Set your own price and get paid with your local currency. Make your phone feels like yours! HANDY JOY CLUB SUBSCRIPTION You will get a special access to the handy server that helps you install and manage icons with native experience. For widget offers steps tracking, we need your permission to use HealthKit and access your health data. It is only needed for those widgets and will ask the permission only when you installing those widgets. All personal data is protected in accordance with the Terms of Service and Privacy Policy: Terms of Service: https://fatllc.notion.site/Terms-of-Service-f1597bb9fe4a40a896df94483f78072b Privacy Policy: https://fatllc.notion.site/Privacy-Policy-d783115a43634665ba773a1e7e529417
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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
Provide more advanced editing tools and options.
Assumption to check: Limited customization options compared to desktop software
Validate with people who use this workflow before building.
Hypothesis 2
Offer a more flexible pricing model with tiered features.
Assumption to check: High subscription cost for full functionality
Validate with people who use this workflow before building.
Hypothesis 3
Implement social features for users to showcase and share their widgets.
Assumption to check: Lack of community features for sharing creations
Validate with people who use this workflow before building.
Hypothesis 4
Optimize app performance to ensure smooth operation on a wider range of devices.
Assumption to check: Occasional performance issues on older devices
Validate with people who use this workflow before building.
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
Expert
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.
