Master Inventory Catalog
Browse battle-tested, verified turnkey software systems ready for immediate deployment and commercial resale.
Showing 48 software systems under Android APK
FloodEvacuation Pro: Flash Flood Evacuation & High Ground Plan
Identify flood plain zones and safe inland evacuation routes away from river basins.
EarthquakeReadiness Pro: Seismic Safety & Emergency Shutoff
Gas meter shut-off procedures, drop-cover-hold protocols, and structural checks.
TornadoSafety Pro: Enhanced Fujita Scale & Shelter Hardening
Know where to take cover in homes without basements and vehicle tornado protocols.
HurricaneTrackerOffline Pro: Hurricane Readiness & Storm Checklist
Categories 1 through 5 wind damage scales, storm surge safety, and supply checklists.
WeatherBarometerLog Pro: 24-Hour Barometric Trend Graph
Plot atmospheric millibar drops that precede severe thunderstorms and cold fronts.
HeatIndexCalc Pro: Wet Bulb Globe Temperature (WBGT) Calc
Calculate dangerous heat index levels to prevent heat exhaustion and heat stroke.
HypothermiaGuide Pro: Wind Chill Factor & Hypothermia Stages
Recognize the 'umbles' (stumble, mumble, fumble) and rewiring protocols for freezing.
SunburnIndex Pro: UV Index & Fitzpatrick Phototype Timer
Calculate maximum safe sun exposure minutes before sunburn occurs.
HydrationNeeds Pro: High-Altitude & Desert Hydration Math
Calculate required liters of drinking water per hour based on heat and backpack weight.
BackpackWeight Pro: Ultralight Backpack Base Weight Calc
Classify shelter, sleep system, cook kit, and water weight to keep pack under 15 lbs.
CampCooking Pro: Dutch Oven Campfire Briquette Heat Chart
Know exactly how many coals to place on top and bottom of cast iron for 350°F.
BushcraftTools Pro: Axe & Fixed-Blade Field Knife Sharpening
Field maintenance for high-carbon steel blades, stropping angles, and wood carving.
AnimalTracks Pro: North American Wildlife Footprint Guide
Identify deer, elk, bear, cougar, coyote, and rabbit tracks and scat.
WildEdibles Pro: Foraging Edible Plants & Universal Test
Identify dandelion, cattail, pine needle tea, and learn the 8-step edibility test.
ShelterBuilding Pro: Emergency Wilderness Shelter Blueprints
Build wind-proof lean-tos, thermal debris huts, A-frames, and snow caves.
FireCraftGuide Pro: Primitive & Modern Fire Lighting Guide
Techniques for feather sticks, char cloth, bow drills, ferro rods, and wet wood fires.
WaterPurification Pro: Wilderness Water Filtration & Boiling
Field guide to giardia, cryptosporidium, chemical purification tablets, and filters.
OrienteeringTools Pro: Map Declination & Triangulation Tool
Convert magnetic compass bearings to true map bearings and pinpoint position.
PacingBeads Pro: Ranger Pace-Count Beads & Foot Travel Calc
Calibrate your 100-meter pace count to measure walking distance accurately in dark.
RangeFinderStadia Pro: Mil-Dot Reticle Distance Estimator
Calculate target distance in yards based on known object height and angular mils.
CompassClinometer Pro: Slope Angle Clinometer & Pitch Gauge
Measure hill slope angle in degrees to evaluate avalanche hazards and trail steepness.
BarometerAltimeter Pro: Barometric Pressure Altimeter Gauge
Calculate elevation above sea level using the phone's internal air pressure sensor.
CloudAtlasWeather Pro: Cloud Formations & Weather Forecasting
Identify cumulonimbus, cirrus, and stratus clouds to predict incoming storm fronts.
StarNavigator Pro: Celestial Navigation by Polaris & Cross
Find true north using the Big Dipper and true south using the Southern Cross.
MoonPhaseTides Pro: Lunar Phase & Spring/Neap Tide Clock
Predict high and low tidal swings based on lunar gravitational cycles.
SunPosition Pro: Solar Altitude, Azimuth & Daylight Hours
Calculate sun angles and shadow lengths to orient solar panels or wilderness shelters.
OfflineGpsLocator Pro: MGRS, UTM & Lat/Long Coordinate Finder
Display raw hardware GPS coordinates in civilian Lat/Long, UTM, and military MGRS.
FieldMedicSurvival Pro: Offline First Aid & CPR Audio Metronome
Emergency protocols for trauma, tourniquets, hypothermia, and 105 BPM CPR audio.
KnotCraftRigging Pro: 40+ Illustrated Boating & Rigging Knots
Step-by-step vector guides for bowline, clove hitch, square lashing, and sheet bend.
SurvivalHandbook Pro: Civilian Wilderness Survival Handbook
Field manual covering emergency shelter, water filtration, firecraft, and signals.
TrailCompass Pro: Offline Topo GPX & Waypoint Navigator
Navigate backcountry trails with offline topographic contour maps and breadcrumbs.
CountriesPopulations Pro: Global Country Demographic Rankings
Sort 195 nations by population, land area square miles, GDP, and life expectancy.
FiftyStatesCapitals Pro: All 50 US States, Capitals & Emblems
Complete guide to state capitals, official birds, state flowers, mottos, and population.
ResistorFourBand Pro: 4-Band & 5-Band Resistor Color Decoder
Select color bands to instantly calculate resistance values and tolerance %.
InductorColorCode Pro: Inductor Color Bands & Resonance Calc
Decode microhenry color bands and calculate LC tank circuit resonance frequencies.
CapacitorCalc Pro: Series & Parallel Capacitance & RC Constant
Calculate equivalent capacitance and RC circuit charging/discharging time constants.
ElectronicsOhmsLaw Pro: Ohm's Law & Electrical Power Calc
Calculate voltage (V), current (I), resistance (R), and electrical power (P=VI).
CryptographyCiphers Pro: Classical & Modern Cryptography Guide
Learn how Caesar ciphers, Vigenère squares, Diffie-Hellman, and RSA encryption work.
RegexpCheatsheet Pro: Regular Expression Tokens & Lookaheads
Quick reference for negative lookaheads, non-capturing groups, and greedy quantifiers.
SqlQueryBuilder Pro: SQL Query Syntax & Join Visualizer
Visual guide to INNER JOIN, LEFT JOIN, FULL OUTER JOIN, GROUP BY, and OVER() clauses.
HtmlCssHandbook Pro: Semantic HTML5 & Modern CSS Grid Guide
Quick visual syntax for flexbox layout, CSS grid, subgrid, and modern selectors.
KotlinReference Pro: Modern Kotlin & Coroutines Guide
Syntax patterns for extension functions, sealed interfaces, flows, and Jetpack Compose.
PythonCheatSheet Pro: Python 3.12 Syntax & Standard Library
Reference for list comprehensions, decorators, dataclasses, generators, and typing.
LinuxTerminalGuide Pro: Linux Command Line & Bash Guide
Master file management, permissions (chmod/chown), pipes, grep, awk, and cron.
GitCommandsPro: Offline Git Version Control Cheat Sheet
Reference for git cherry-pick, interactive rebase, reflog, and branch merging.
MarkdownGuide Pro: CommonMark & GitHub Flavored Markdown
Quick reference for tables, task lists, code fences, blockquotes, and link syntax.
AsciiTable Pro: Standard & Extended ASCII / Unicode Table
Look up decimal, hex, octal, HTML entity, and binary values for all 256 ASCII chars.
BaseConverter Pro: Arbitrary Base 2-to-36 Radix Converter
Convert alphanumeric strings across any custom mathematical base.