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.
Make screen time more meaningful with Khan Academy Kids—the award-winning, educational app for kids ages 2–8
Free · 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.
Kit ready. Verify your email to download it.
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 Khan Academy Kids: 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 content variety can lead to user boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchases may frustrate users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Navigation can be confusing for younger users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Progress tracking can be unclear.
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.
Make screen time more meaningful with Khan Academy Kids—the award-winning, educational app for kids ages 2–8. Packed with fun, standards-aligned reading games, math games, phonics lessons, and interactive storybooks, the app has helped over 21 million preschool and elementary students learn at home, at school, and on the go. Join Kodi the Bear and friends on exciting educational adventures that spark curiosity, build confidence, and inspire a lifelong love of learning. PLAY-BASED READING, MATH & MORE: From ABC games and phonics practice to counting, addition, and shapes, kids can explore over 5,000 educational games and activities with Kodi’s friends: • Ollo the Elephant – phonics and letter sounds • Reya the Red Panda – storytime and writing • Peck the Hummingbird – numbers and counting • Sandy the Dingo – puzzles, memory, and problem-solving AWARDS AND RECOGNITION: With more than 180,000 5-star reviews, Khan Academy Kids has won the hearts of families and educators worldwide. • “Best kids app EVER” • “It’s 100% free and my kids learn so much!” • “If you’re looking for a HIGH quality app for your kids, this is it!” Recognition includes: • Common Sense Media – Top Rated Educational App • Children’s Technology Review – Editor’s Choice • Parents’ Choice – Gold Award Winner • Apple App Store – Editor’s Choice A LIBRARY OF STORYBOOKS AND VIDEOS: • Discover hundreds of kids’ books and videos for preschool, kindergarten and early elementary. • Explore animals, dinosaurs, science, and more with non-fiction books from National Geographic and Bellwether Media. • Choose “Read To Me” for read-aloud storybooks in English or Spanish. • Dance and sing-along with videos from Super Simple Songs! FROM PRESCHOOL TO 2ND GRADE: Khan Academy Kids grows with your child, from age 2 through 8 and beyond: • Preschool learning games build foundational reading, math, and life skills. • Kindergarten activities cover phonics, sight words, writing, and early math. • 1st and 2nd grade lessons strengthen reading comprehension, problem-solving, and confidence. SAFE, TRUSTED, AND ALWAYS FREE: Created in partnership with the Stanford Graduate School of Education by education experts, aligned with Head Start and Common Core Standards, COPPA-compliant, and 100% free—no ads, no subscriptions. Khan Academy is a nonprofit with the mission to provide a free, world-class education for anyone, anywhere. LEARN ANYWHERE—AT HOME, AT SCHOOL, EVEN OFFLINE: • At home: Khan Academy Kids is the perfect learning app for families at home. From sleepy mornings to road trips, kids and families love learning with Khan Kids. For homeschool: Families that homeschool also enjoy our standards-aligned, educational kids games and lessons for kids. • At school: In-app Teacher Tools help preschool and elementary school teachers create assignments, track student progress, and make the most of small-group and whole-group learning. • On the go: No wifi? No problem! Download books and games for learning on the go. Perfect for car trips, waiting rooms, or cozy mornings at home. START YOUR LEARNING ADVENTURE TODAY Download Khan Academy Kids and watch your child discover, play, and grow. JOIN OUR COMMUNITIES FOR FAMILIES AND TEACHERS Follow @khankids on Instagram, TikTok, and YouTube. KHAN ACADEMY: Khan Academy is a 501(c)(3) nonprofit organization with the mission to provide a free, world-class education to anyone, anywhere. Khan Academy Kids was created by early learning experts from Duck Duck Moose who created 22 preschool games and won 22 Parents’ Choice Awards, 19 Children’s Technology Review Awards and a KAPi award for Best Children’s App. Khan Academy Kids is 100% free with no ads or subscriptions.
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.