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.
"Nighty Night Forest" is the sequel to our popular bedtime apps "Nighty Night" and "Nighty Night Circus"
$3.99 · 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 Nighty Night Forest: 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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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 story variety can lead to user fatigue.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchase system can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of personalized recommendations for users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Navigation can be cumbersome for young users.
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.
"Nighty Night Forest" is the sequel to our popular bedtime apps "Nighty Night" and "Nighty Night Circus". More than 8 million parents around the world bring their children to bed with our good-night-apps. The third "Nighty Night" app is all about the forest and its adorable inhabitants. "Nighty Night Forest" is the perfect App for a daily go-to-sleep ritual with cute animals, sweet lullaby music and great narration. Children find themselves in a dreamy forest setting with 7 different animals, which they can bring to bed by switching off the lights. Each animal performs several funny and surprising moves and wants to show them off to the child before going to sleep. “Nighty Night Forest” is brought to you by the award winning artist Jeremy Kool, who puts a lot of passion and effort in creating stunning sceneries by combining 3d modelling and lighting with 2d illustrations and textures. Highlights: • Stunning designs and animations by Jeremy Kool • 7 interactive animals (Dear, skunk, woodpecker, chipmunk, mole, fox and bear) • Autoplay-mode • hidden surprises along the way • custom sound design and music • Perfect session length for a daily go-to-sleep ritual • 13 languages with narration: English, German, Spanish, French, Dutch, Swedish, Italian, Brazilian Portuguese, Russian, Turkish, Chinese, Japanese and Korean • For kids aged 2 – 5 About Fox & Sheep: We are a Studio in Berlin and develop high quality apps for kids at the age of 2-8 years. We are parents ourselves and work passionately and with a lot of commitment on our products. We work with the best illustrators and animators around the world to create and present the best apps possible – to enrich the lives of our and your kids.
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.