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.
"Thanks to this useful app, drawing realistic hands can become a whole lot easier" - ImagineFX
$1.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Handy Art Reference Tool: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited reference categories, making it hard to find specific images.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No offline access for stored artworks.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases can be confusing for users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited customization options for color palettes.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
"Thanks to this useful app, drawing realistic hands can become a whole lot easier" - ImagineFX "Pencillers, inkers, and colorists should all give this a look!" - Tony Moore, co-creator of The Walking Dead If you're an artist and ever wanted just quick and easy drawing reference for hands, heads, or even feet (IAP) without having to awkwardly pose your limbs in front of a mirror, this app is for you! HANDY® is an artist's reference tool, consisting of several rotatable 3D limbs with a variety of poses useful for drawing. You can also customize and edit your own poses for hands, feet, and skulls. Fully adjustable 3-point lighting means you can get easy lighting reference when using any of the 10+ included 3D head busts. Handy if you’re painting and need to know what shadows the head casts from a certain angle! Also available is the Animal Skulls pack. With over 10 different animal species, it's great for anatomical reference or creature design inspiration. [Foot rigs and Animal Skull pack require additional purchase] NEW in Handy v5: Edit the materials of models! Selectively turn off their textures, adjust their specularity, or tint them a certain color. Perfect for comic book artists, painters, or just casual sketchers! Featured in ImagineFX's Top 10 Must-Have Apps! Check out the video demo: https://www.youtube.com/@handyarttool Sign up for the HANDY newsletter for information about new upcoming updates! http://www.handyarttool.com/newsletter Follow HANDY on Bluesky https://bsky.app/profile/handyarttool.bsky.social
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.