App Overview

Mathemagics: Mental Math icon

Mathemagics: Mental Math

Blue Lightning Labs · Education

Amaze and delight others as you multiply, divide, and square at lightning fast speed

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
468 ratings · Top 5%

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.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

Screen plan

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.

Differentiate and validate

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.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Mathemagics: Mental 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.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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

Include more advanced operations and customizable options

Assumption to check: Limited variety of math operations

Validate with people who use this workflow before building.

Hypothesis 2

Add a leaderboard or social sharing options

Assumption to check: Lack of community features

Validate with people who use this workflow before building.

Hypothesis 3

Implement dynamic challenges based on user performance

Assumption to check: Static challenges may become repetitive

Validate with people who use this workflow before building.

Hypothesis 4

Offer tailored learning experiences based on user progress

Assumption to check: Absence of personalized learning paths

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Amaze and delight others as you multiply, divide, and square at lightning fast speed. Learn and practice the tricks of mental math calculation in a fun and engaging application. Study any of the math tricks and then practice them as you progress through various levels of proficiency. Tease your brain with a quick practice session while waiting in lines, riding in the car, or on the plane. Only the basic math skills of addition, subtraction and simple multiplication and division are needed to achieve astonishing results. Students: Baffle your math teachers by providing answers faster than thought possible. Teachers: Inspire your students as you pull answers to math problems out of thin air. Master these math tricks: * Multiply as high as 20x20 * Square a number ending in 5 * Square any two digit number * Doubling and halving * Multiply any number by 4 * Multiply any number by 5 * Multiply any number by 9 * Multiply any number by 25 * Multiply any number by 99 * Squares from 41 to 59 * Round number multiplication * Divide any number by 5 * Multiply by 11 * Multiply in the 90's * Square numbers in the 50's * Multiply differing by 2,4,6 * Multiply if 1's sum is 10 * Multiply two close numbers * Sum of first n even numbers * Sum of first n odd numbers * Subtracting two and three digit numbers * Adding two and three digit numbers * Quickly divide any number by 9 * Subtracting from 1000 and higher multiples of 10 * Multiply two numbers close to 10 * Nines complement * Tens complement * Large number addition #1 * Large number addition #2 * Large number subtraction * Evenly divisible by 3 * Evenly divisible by 4 * Evenly divisible by 5 * Evenly divisible by 6 * Evenly divisible by 7 * Evenly divisible by 8 * Evenly divisible by 9 * Evenly divisible by 10 * Evenly divisible by 11 * Evenly divisible by 12 * Square numbers in the 20’s * Square numbers in the 30’s * Square numbers in the 60’s * Square numbers in the 70’s * Square numbers in the 80’s * Square numbers in the 100’s * Square numbers in the 200’s * Square numbers in the 300’s * Square numbers in the 400’s * Square numbers in the 500’s * Square numbers in the 700’s * Square numbers in the 800’s * Square numbers in the 900’s * Casting Out Nines Digit Sum * Check Addition by Casting Nines * Check Subtraction by Casting Nines * Check Multiplication by Casting Nines * Check Division by Casting Nines * Casting Out Elevens Digit Sum * Check Addition by Casting Elevens * Check Subtraction by Casting Elevens * Check Multiplication by Casting Elevens * Check Division by Casting Elevens Prepare for the math section on the SAT, PSAT, ACT, GRE, GMAT, MCAT, or any other standardized test. Don't waste time with a calculator on the few tests that allow them. Use Mathemagics as a tutor to quicken up your test taking abilities. Perfect training for the UIL Mathematics and Number Sense Contests. Activate and challenge your brain to expand its ability to think efficiently and have fun at the same time. Train yourself to break problems down in to smaller more manageable pieces in order to reach solutions quicker and more accurately than anyone else. ================================= "Best New iPhone Education App" - eduinreview.com May 2012 Featured in the App Store Test Prep promotion December 2011 Featured as an AppStore Education Staff Favorite Featured in the AppStore Hall of Fame March 16, 2010 Featured in the EU AppStores as New and Noteworthy December 8, 2009 Featured as an AppStore Best of 2009 App November 17, 2009 Featured as an AppStore Essential (Apps for Boys) September 22, 2009 Featured as an AppStore Essential (High School Survival Guide) August 25, 2009 Featured as an AppStore Staff Favorite ================================= Follow us on Twitter @blulightnin =================================

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

< Scroll to see more >

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
Expo Notifications
BUILD KIT DIFFICULTY
Starter

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.