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.
"...every aspect of Jubitron the Girl Robot: The Lovely Little Picnic oozes quality."
$0.99
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.
Your first Build Kit is free with a verified email.
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 Jubitron the Girl Robot!: map the core Books workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
"...every aspect of Jubitron the Girl Robot: The Lovely Little Picnic oozes quality." -BestAppsForKids The Lovely Little Picnic is the first story in the Jubitron: The Girl Robot series. The book features original music, illustration, animation and surprise activities on every page that will capture your child's sense of creativity and imagination. In this adventure Jubitron and her friends Mr. Alligator and Little Birdie decide to go on a lovely little picnic. But when their picnic is interrupted by a rain storm, Jubitorn has a bright idea and with the help of her friends (and a rocket ship) they save the day and make a new friend while they're at it. Kids will have a blast as they play the drums on a cake with Mr. Alligator, toss olives around with Little Birdie and cut the cheese with Jubitron! Optional narration allows you to choose whether to read the story aloud to your child or let them read along on their own. Tapping on any of the words in the story will result in audio playback of that individual word. It's a great tool to assist in vocabulary building and recognition. • Suitable for ages 2+ • Optional narration, Choose to read the book yourself or have it narrated • Tap on any word to have it read out loud • Original illustration and music • Beautifully animated • Fun interactions on every page ------------------------------------------------------------------------ What critics are saying about Jubitron the Girl Robot: The Lovely Little Picnic: • "...every aspect of Jubitron the Girl Robot: The Lovely Little Picnic oozes quality." -BestAppsForKids • "This is a really fun tale, each page has one interactive element – and it is always something that enhances the story rather than detracting from it." -TheiMum • "The main highlight of the app is its artwork, music, and how well they work together to form a truly interactive experience for children." -iHeartThisApp • "...this is a unique & enjoyable picture book app for children & adults to share. It marries the digital arts to a more retro theme and look for storytelling ... all done in a way that is deeply satisfying. Recommended." -Digital-Storytime
Written user reviews are not shown here. Check current App Store reviews >
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 interactivity compared to games
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of personalization options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficult navigation for younger users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Static content may become repetitive
Validate with people who use this workflow before building.
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.
Not assessed in a Build Kit yet.
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.