Master Software Showroom Catalog
Test-drive live interactive demos, inspect full specifications, and buy 100% unencrypted source code with commercial white-label resale rights and $0 monthly fees.
BarterTradeLog Pro: Goods & Services Barter Trading Ledger
Track non-cash trades of labor, tools, farm produce, and mechanical repairs.
CryptoDcaCalc Pro: Bitcoin Dollar-Cost Averaging Simulator
Simulate historical returns of buying $25 of Bitcoin every week over 5 years.
MiningProfitability Pro: Crypto Mining Wattage & ROI Calc
Calculate net daily mining yield after subtracting kilowatt-hour electrical costs.
LiquidityPoolCalc Pro: DeFi Impermanent Loss Calculator
Calculate impermanent loss when supplying tokens to automated market makers (AMMs).
StakingYield Pro: Proof-of-Stake Compounding Staking APY
Project annual token rewards with daily and weekly compounding reinvestment.
TokenUnlockWatch Pro: Crypto Token Vesting & Cliff Schedule
Track upcoming team and investor token unlocks that could cause sell pressure.
GasFeeGwei Pro: EVM Gas Fee Gwei to Dollar Cost Calculator
Calculate exact transaction fees for token transfers and smart contract calls.
ColdStorageAudit Pro: BIP-39 Paper Backup Verification Log
Safely test your knowledge of seed word positions without typing full phrases.
BankHolidayCalendar Pro: ACH & Wire Banking Holiday Guide
Know the exact days when wire transfers, ACH deposits, and stock markets are closed.
CheckbookReconcile Pro: Classic Bank Checkbook Register
Keep a running balance of uncleared checks, debit transactions, and deposits.
PocketLedger Pro: Double-Entry Accounting T-Accounts
Clean debit and credit accounting ledger for small business bookkeeping on the go.
PettyCashBox Pro: Petty Cash Drawer Voucher Reconciliation
Log cash drawer drops, cash payouts, and end-of-day register reconciliation.
FlashMaster Pro: Spaced-Repetition Leitner Flashcards
Master languages, medical terms, and law using proven spaced-repetition memory.
FormulaSheet Pro: Physics, Chemistry & Math Formula Sheet
Over 500 essential equations with variable definitions and metric/imperial units.
PeriodicTable Pro: Interactive Chemistry Periodic Table
Atomic numbers, electron configurations, isotopes, melting points, and discovery history.
MathSolver Pro: Step-by-Step Offline Algebra Solver
Solve quadratic equations, factor polynomials, and simplify rational expressions.
UnitConverterUniversal Pro: High-Precision Universal Converter
Convert over 1,000 units across length, mass, pressure, energy, and radiation.
MorseCodeTrainer Pro: Audio & Visual Morse Code Trainer
Learn CW telegraphy using the Koch method with customizable WPM transmission speeds.
FlagQuizPro: All 195 World National Flags & Capitals
Interactive geographical quiz testing flags, capital cities, and country outlines.
AnatomyAtlas Pro: Human Skeletal & Muscular Reference
Searchable medical reference detailing all 206 bones and major muscle insertions.
StarConstellation Pro: Offline Constellation & Star Map
Identify 88 astronomical constellations, bright navigational stars, and nebulae.
SolarSystemExplorer Pro: Planetary Orbits & Gravity Physics
Interactive scale model of the sun, 8 planets, asteroid belt, and major moons.
GeoQuizCapital Pro: World Borders & Geography Mastery
Test your knowledge of landlocked countries, major rivers, and mountain ranges.
ElementValence Pro: Chemical Bonding & Valence Rules
Determine ionic and covalent bond geometries using Lewis dot rules and VSEPR theory.
OrganicChemistry Pro: Organic Functional Groups Reference
Master alcohols, esters, ketones, SN1/SN2 reactions, and aromatic substitutions.
CalculusDerivatives Pro: Calculus Derivatives & Integrals Sheet
Product rule, chain rule, integration by parts, and trigonometric substitution tables.
MatrixLinearAlgebra Pro: Matrix Determinants & Dot Product
Calculate 2x2, 3x3, and 4x4 matrix inverses, cross products, and eigenvalues.
ProbabilityDist Pro: Normal & Poisson Distribution Calculator
Compute z-scores, p-values, and standard bell curve area under the curve.
StatisticsSummary Pro: Descriptive Statistics & Variance Calc
Enter data sets to instantly calculate mean, median, mode, IQR, and standard deviation.
BooleanLogic Pro: Digital Logic Truth Tables & Karnaugh Maps
Simplify digital circuit logic with interactive AND, OR, XOR, NOT, and NAND tables.
BinaryHexConverter Pro: Binary, Octal, Decimal & Hex Converter
Convert numbers between base 2, 8, 10, and 16 with bitwise bit shift operations.
LatinRootWords Pro: Greek & Latin Etymology Dictionary
Unlock 10,000+ English vocabulary words by studying their original Greek/Latin roots.
SpeedReader Pro: RSVP Rapid Serial Visual Presentation Reader
Read articles at 500+ words per minute by eliminating ocular saccade movements.
PhoneticAlphabet Pro: NATO Aviation Phonetic Alphabet Drills
Master Alpha, Bravo, Charlie, and Delta aviation radio voice communications.
SignLanguageBasics Pro: ASL Finger-Spelling Alphabet Cards
Learn American Sign Language A-Z alphabet and common emergency signs offline.
BrailleAlphabet Pro: 6-Dot Unified English Braille Reference
Visual reference for Grade 1 and Grade 2 Unified English Braille contractions.
WorldTimeHistory Pro: Chronological World History Timeline
Scroll through human history from ancient Mesopotamia to the 21st century.
PresidentsBiographies Pro: All 46 US Presidents & Key Events
Complete bios, election maps, landmark legislation, and Cabinet secretaries.
ConstitutionRights Pro: US Constitution & Bill of Rights Text
Search the complete unedited text of the Constitution and all 27 Amendments.
SupremeCourtCases Pro: Landmark Supreme Court Legal Precedents
Summaries of Marbury v. Madison, Brown v. Board, Miranda v. Arizona, and more.
RomanNumerals Pro: Roman to Arabic Number Converter
Convert years, monument dates, and super bowl numbers to Roman numerals.
GeometryTheorem Pro: Euclidean Geometry Theorems & Proofs
Reference for Pythagorean theorem, alternate interior angles, and circle tangents.
TrigonometryCircle Pro: Unit Circle Radians & Degree Angles
Interactive unit circle showing sine, cosine, and tangent coordinates from 0° to 360°.
PrimeNumberFinder Pro: Sieve of Eratosthenes Prime Number Calc
Generate prime numbers, test primality, and find prime factorizations of integers.
FractionSimplifier Pro: Greatest Common Divisor & Fraction Tool
Add, subtract, multiply, and simplify complex fractions with step-by-step reduction.
BaseConverter Pro: Arbitrary Base 2-to-36 Radix Converter
Convert alphanumeric strings across any custom mathematical base.
AsciiTable Pro: Standard & Extended ASCII / Unicode Table
Look up decimal, hex, octal, HTML entity, and binary values for all 256 ASCII chars.
MarkdownGuide Pro: CommonMark & GitHub Flavored Markdown
Quick reference for tables, task lists, code fences, blockquotes, and link syntax.