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.
Turn shadows on the wall into wild and wooly creatures
$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 The Monsters 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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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 may lead to reduced engagement.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in tracking progress across multiple activities.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases may confuse users about what is included for free.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features to encourage sharing and interaction.
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.
Turn shadows on the wall into wild and wooly creatures. Give them googly eyes, tiny arms, too many horns, spotted tails, or sparkly fur — any assortment of fantastical features that you like. Bring your monsters to life! Make them happy or sad, nervous or bad, lovely or mad. Feed them radioactive snacks and make them sing and dance. Take a monster selfie and decorate with stickers. Make the monsters of your dreams! “Weird, but in a good way” — Geeks with Juniors "A wonderful aesthetic experience" — Warren Buckleitner, Children's Technology Review The Monsters is the third app in Tinybop’s Digital Toys, a series of open-ended building apps that let kids ages 4+ create, play with, and collect whatever they can imagine. The second is The Everything Machine, an App Store Editors’ Choice and Children’s Technology Review Editor’s Choice. The first, The Robot Factory, is a Parents’ Choice Gold Award winner and the iPad App of the Year. FEATURES + Make monsters! Turn shadows into the creatures of your dreams...or nightmares. Millions of monsters are possible. + Give your monsters lots of arms and legs. Stretch or shrink their limbs as you like. + Add all kinds of eyes, mouths, and horns to your monsters. Give them scales or fur, feathers or hair. + Paint your monster with different colors, sparkles, spots, scales, and more! + Make happy, sad, scared, or mad monsters. What will yours be like? + Explore different rooms. In the closet, turn shadows into monsters. Keep and play with all your creations in a haunted hall. + Pop into the photo booth and take selfies with your monsters. + Have a monster battle! + Make your monsters speak. Explore the sound library or record your own monster sounds. + Intuitive, safe, and kid-friendly design. + Multi-user system: each child can create and save their own monsters. + Entertaining for kids and adults alike. + No in-app purchases or 3rd party advertising. + Original artwork by Tianhua Mao. + Original sound design. Privacy Policy We take your and your child’s privacy seriously. While none of our apps collect personally identifiable information, Monsters does not collect any analytics data, including usage data. We do not include third-party advertising or have in-app purchases in this app. If the camera, microphone, and other services are used in an app, your information is not collected or distributed outside of your device. The images are not transmitted to us, Tinybop has no access to them. Read our complete privacy policy at tinybop.com. About Tinybop 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 See us: instagram.com/tinybop We love hearing your stories! Reach out: [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.