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.
Kids love Tic Tac Math because it’s a game that they know how to play and it’s fun
$1.99 · 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 Tic Tac Math: 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 game variety may lead to boredom
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Some users may find math problems too simple or difficult
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features for competition
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchases may confuse 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.
Kids love Tic Tac Math because it’s a game that they know how to play and it’s fun. Parents and teachers understand that a game that is fun, familiar and educational is a great use of iPad, iPhone and iPod Touch technology before the kids start playing “other” games. And it doesn’t require a lot of time on their part to get things going because every kid knows how to play Tic Tac Toe. This unique app combines the time-tested, kid approved favorite Tic Tac Toe game with math game equations for an educationally fun experience. Kids love to play this math game; parents and teachers love that their elementary school, middle school and even high school kids are honing their math skills. Click “...More” to learn why you should download this App today! Great App for Kids! “This app is really cool on the iPad! The scratch pad rocks and saves paper too.” - Mathevangelist A great classroom story with Tic Tac Math “I began using Tic Tac Math with my fourth grade class this winter and spring as a way to get kids motivated to prepare for standardized testing. Tic Tac Math was quick, the kids loved playing, it requires no explanation and the kids scores went up. I recommend Tic Tac Math to anyone looking for a fun way to help a kids who may be struggling with math.” - Beth Harstad, Fourth Grade Teacher, Mound-Westonka Schools, Mound, Minnesota Tic Tac Math game combines the fun and strategy of Tic Tac Toe with the skill building of math flash cards. Your child can choose which skill to play – addition, subtraction, multiplication or division. There is even the option of playing one, two or three digit numbers in the equations, so they can increase the difficulty as their skills improve. It's easy to get started, no rules to figure out because kids already know the rules! Just as in regular Tic Tac Toe, if you get three squares in a row, you win. To gain a square, you must first solve the math equation. A scratch pad has been included for working out answers, if necessary. This app is great for all ages. You can play against the computer or use that opportunity for a bonding, two-person game. It’s an excellent way for parents to spend time with their children while helping them sharpen their minds. Or, use the two-player mode as an opportunity for an older child to help a younger one. This builds confidence and reinforces math skills at the same time. The fun Tic Tac Math app is the first math game developed to work on all three devices – iPhone, iPod Touch and iPad. Regardless of which you use, you essentially have a portable classroom and teacher anytime you open Tic Tac Math. There aren’t 30 other kids here, though. When your child is playing Tic Tac Math, he or she is the only student. Features: * First creation of a universal math app; works on iPhone, iPod Touch and optimized for the unique features of the iPad * Offers four skills to play – addition, subtraction, multiplication or division * Challenging one, two or three digit number equations * Includes a scratch pad for figuring out answers * Concept is based on Tic Tac Toe, so it’s easy for your child to understand gameplay * Builds math skills in a fun way * Can eliminate the boredom that smart kids often experience while on long trips, waiting in lines or sitting in restaurants * Teachers report that starting out each day with a couple of rounds on Tic Tac Math help kids improve their math facts and gets them settled down to begin learning. So do your child a favor. The next time they site down to play their favorite game on the iPad, ask them to beat the computer on 4 games of Tic Tac Math. They’ll probably think it a bit strange at first, but before you know it they’ll be improving their math scores, building their math confidence and building a path to a better life!
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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.