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.
Jump into Aha World, the ultimate role-playing game! Every character in your world just got a major glow-up! They now move with a fresh new attitude—smoother through every run, jump, and dance
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.
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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 Aha World: Avatar & Family Fun: 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 fatigue.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Navigation can be confusing for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases for premium features can feel misleading.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: The app may require constant internet access for some features.
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.
Jump into Aha World, the ultimate role-playing game! Every character in your world just got a major glow-up! They now move with a fresh new attitude—smoother through every run, jump, and dance. Create and dress up dolls, build and design your dream home, simulate daily life in a bustling mini world, and embark on exciting adventures across a variety of fantasy worlds. MAKE FRIENDS AND SHARE YOUR STORY Visit your neighbors' homes, leave a gift, and give a thumbs up to their designs. Search for friends by their Aha ID and grow your social circle. Share your best moments, collect hearts from friends, and see who stopped by with your visitor activity feed. Your privacy, your rules—control who can visit and what gets shared. DRESS UP YOUR DOLL Design a variety of dolls for your story! Create endless combinations of body shapes, facial features, and hairstyles, then apply stunning makeup to your doll – can you create the perfect look? Select from hundreds of types of clothes, accessories, and shoes to style your unique doll. Express your personality with different outfits. Pink fashion? Princess style? Y2K? Gothic? K-POP? Or design a brand-new style! You can create original designs, explore color combinations, and showcase your design talent. ROLE PLAYING Everyone in Aha World is under your control! Choose your dolls' expressions, give them a voice, make them move and dance, and (if you dare) make them fart! Give each a unique personality and tell their story your way. You can play the role of a doctor in the baby care center, a police officer chasing bad guys, a pop superstar, or a beautiful princess. DESIGN YOUR HOME What is your dream home? A pink princess apartment, an outdoor RV, or a spacious villa with a swimming pool? Enjoy a single life with friends, or start a family, take care of a baby, and raise a dog. Now unleash your inner designer and select from over 3000 furniture items – you can also DIY furniture that's uniquely yours. Once it's decorated, invite your friends to the party! LIFE SIMULATION Experience various lifestyles in the city: Care for babies in the daycare, play the role of a nurse in the hospital or go on a shopping spree in the mall. Explore city-life locations such as the school, police station, courthouse, media building, and more. Discover different towns, interact with various characters, and uncover the secrets of this mini world. MAGIC AND ADVENTURE Embark on a journey full of mystery! Dive into the underwater world to find lost treasures, explore the frozen realm and uncover prehistoric secrets, walk through the fairy tale forest to defeat evil forces, or enter Dino Land to feel the power of ancient giants. The adventure never ends! GAME FEATURES · Over 500 stylish outfits in various styles · More than 400 dolls and over 200 kinds of animals and pets · More than 12 themes and 100+ locations, from everyday life to fantasy worlds · Over 3000 pieces of furniture · DIY design unique clothing and furniture · Weather control to experience different landscapes of sun, rain, snow, and day and night · Hundreds of puzzles and hidden Easter egg secrets · Exciting surprise gifts available regularly · Offline game, play without Wi-Fi or an internet connection Aha World provides infinite creative spaces and grants endless possibilities. Be anyone you want to be, go anywhere you want to go, and create your own Aha World. Contact us: [email protected] SUBSCRIPTION: 1. Once subscribed you can access all content and features of Aha World. 2. We offer 2 subscription methods. 3. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. 4. Manage your subscriptions and turn off automatic renewal in your Apple account settings. 5. Privacy Policy: https://www.ahaworld.com/privacy/en/privacy.html 6. Terms of Service: https://www.ahaworld.com/terms/en/terms.html
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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.