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.
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.
GitCommandsPro: Offline Git Version Control Cheat Sheet
Reference for git cherry-pick, interactive rebase, reflog, and branch merging.
LinuxTerminalGuide Pro: Linux Command Line & Bash Guide
Master file management, permissions (chmod/chown), pipes, grep, awk, and cron.
PythonCheatSheet Pro: Python 3.12 Syntax & Standard Library
Reference for list comprehensions, decorators, dataclasses, generators, and typing.
KotlinReference Pro: Modern Kotlin & Coroutines Guide
Syntax patterns for extension functions, sealed interfaces, flows, and Jetpack Compose.
HtmlCssHandbook Pro: Semantic HTML5 & Modern CSS Grid Guide
Quick visual syntax for flexbox layout, CSS grid, subgrid, and modern selectors.
SqlQueryBuilder Pro: SQL Query Syntax & Join Visualizer
Visual guide to INNER JOIN, LEFT JOIN, FULL OUTER JOIN, GROUP BY, and OVER() clauses.
RegexpCheatsheet Pro: Regular Expression Tokens & Lookaheads
Quick reference for negative lookaheads, non-capturing groups, and greedy quantifiers.
CryptographyCiphers Pro: Classical & Modern Cryptography Guide
Learn how Caesar ciphers, Vigenère squares, Diffie-Hellman, and RSA encryption work.
ElectronicsOhmsLaw Pro: Ohm's Law & Electrical Power Calc
Calculate voltage (V), current (I), resistance (R), and electrical power (P=VI).
CapacitorCalc Pro: Series & Parallel Capacitance & RC Constant
Calculate equivalent capacitance and RC circuit charging/discharging time constants.
InductorColorCode Pro: Inductor Color Bands & Resonance Calc
Decode microhenry color bands and calculate LC tank circuit resonance frequencies.
ResistorFourBand Pro: 4-Band & 5-Band Resistor Color Decoder
Select color bands to instantly calculate resistance values and tolerance %.
FiftyStatesCapitals Pro: All 50 US States, Capitals & Emblems
Complete guide to state capitals, official birds, state flowers, mottos, and population.
CountriesPopulations Pro: Global Country Demographic Rankings
Sort 195 nations by population, land area square miles, GDP, and life expectancy.
TrailCompass Pro: Offline Topo GPX & Waypoint Navigator
Navigate backcountry trails with offline topographic contour maps and breadcrumbs.
SurvivalHandbook Pro: Civilian Wilderness Survival Handbook
Field manual covering emergency shelter, water filtration, firecraft, and signals.
KnotCraftRigging Pro: 40+ Illustrated Boating & Rigging Knots
Step-by-step vector guides for bowline, clove hitch, square lashing, and sheet bend.
FieldMedicSurvival Pro: Offline First Aid & CPR Audio Metronome
Emergency protocols for trauma, tourniquets, hypothermia, and 105 BPM CPR audio.
OfflineGpsLocator Pro: MGRS, UTM & Lat/Long Coordinate Finder
Display raw hardware GPS coordinates in civilian Lat/Long, UTM, and MGRS grid.
SunPosition Pro: Solar Altitude, Azimuth & Daylight Hours
Calculate sun angles and shadow lengths to orient solar panels or wilderness shelters.
MoonPhaseTides Pro: Lunar Phase & Spring/Neap Tide Clock
Predict high and low tidal swings based on lunar gravitational cycles.
StarNavigator Pro: Celestial Navigation by Polaris & Cross
Find true north using the Big Dipper and true south using the Southern Cross.
CloudAtlasWeather Pro: Cloud Formations & Weather Forecasting
Identify cumulonimbus, cirrus, and stratus clouds to predict incoming storm fronts.
BarometerAltimeter Pro: Barometric Pressure Altimeter Gauge
Calculate elevation above sea level using the phone's internal air pressure sensor.
CompassClinometer Pro: Slope Angle Clinometer & Pitch Gauge
Measure hill slope angle in degrees to evaluate avalanche hazards and trail steepness.
RangeFinderStadia Pro: Mil-Dot Reticle Distance Estimator
Calculate target distance in yards based on known object height and angular mils.
PacingBeads Pro: Ranger Pace-Count Beads & Foot Travel Calc
Calibrate your 100-meter pace count to measure walking distance accurately in dark.
OrienteeringTools Pro: Map Declination & Triangulation Tool
Convert magnetic compass bearings to true map bearings and pinpoint position.
WaterPurification Pro: Wilderness Water Filtration & Boiling
Field guide to giardia, cryptosporidium, chemical purification tablets, and filters.
FireCraftGuide Pro: Primitive & Modern Fire Lighting Guide
Techniques for feather sticks, char cloth, bow drills, ferro rods, and wet wood fires.
ShelterBuilding Pro: Emergency Wilderness Shelter Blueprints
Build wind-proof lean-tos, thermal debris huts, A-frames, and snow caves.
WildEdibles Pro: Foraging Edible Plants & Universal Test
Identify dandelion, cattail, pine needle tea, and learn the 8-step edibility test.
AnimalTracks Pro: North American Wildlife Footprint Guide
Identify deer, elk, bear, cougar, coyote, and rabbit tracks and scat.
BushcraftTools Pro: Axe & Fixed-Blade Field Knife Sharpening
Field maintenance for high-carbon steel blades, stropping angles, and wood carving.