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.
Explore the science of the skies!
$2.99 · 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 Weather by Tinybop: 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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Affiliate link: CloneChart may earn a commission at no extra cost
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 interactive elements compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchases can confuse users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of community features for sharing learnings
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Static content may feel outdated
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.
Explore the science of the skies! "This app is truly delightful, unraveling the science behind rain and shine with gorgeous and responsive models." — Geeks with Junior "Definitely worth a download." — Cult of Mac Dive into a cloud and see what it’s made of. Make it rain, make it snow, or make a thunderstorm. Whirl a tornado or a hurricane. Play with sun, air, water, temperature, wind, and precipitation. Discover the signs that tell you what it’s going to be like outside today. Weather is an interactive model. Kids play and learn about the atmospheric forces that make the weather and affect us everyday. Weather is No. 6 in Tinybop’s Explorer’s Library series, designed for curious kids ages 4+ to dive deep into big ideas. The apps in this series have won Best of the App Store, App Store Editors’ Choice, Parents’ Choice, and Children's Technology Review Editor’s Choice awards. Features: + Explore the elements of weather heat, water, and air in interactive scenes. + Each scene includes detailed close-ups and infographics. + See the invisible at work: study water and ice molecules and hot and cold air particles. + Experiment with extreme weather! + See how extreme weather effects the environment. + Create hurricanes and tornados. + Jump inside a cloud! Combine droplets or ice crystals to create rain and snow. + Draw clouds and see how they change at different altitudes. + Change the temperature. See how hot and cold affect precipitation, plants, and pets. + Learn new vocabulary in 40+ languages with interactive labels. + Sophisticated sound design rewards experimentation. + Original artwork by Jasu Hu. + Intuitive, safe, and kid-friendly design. + Entertaining for kids and adults alike. FREE handbook Our expert-reviewed handbook is full of facts, interaction hints, and discussion questions to support learning in this app, in the classroom, or at home. Download in your app or at: http://tinybop.com/handbooks. Privacy policy We take your and your child’s privacy very seriously. We do not collect or share personal information about your child, nor do we allow any third-party advertising. When the camera, microphone, and other services are used within an app, your information is neither collected nor distributed outside of the app. Read our complete privacy policy at tinybop.com. Tinybop, Inc. is a Brooklyn-based studio of designers, engineers, and artists. We make toys for tomorrow. We’re all over the internet. Visit us: www.tinybop.com Follow us: twitter.com/tinybop Like us: facebook.com/tinybop Peek behind the scenes: instagram.com/tinybop We love hearing your stories! If you have ideas, or something isn’t working as you expect it to, please contact us: [email protected]. Psst! It's not Tiny Bop, or Tiny Bob, or Tiny Pop. It's Tinybop.
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.