Master Inventory Catalog
Browse battle-tested, verified turnkey software systems ready for immediate deployment and commercial resale.
Showing 48 software systems under Android APK
SparkPlugGap Pro: Spark Plug Gap Clearance Specification
Gap measurement guidelines for iridium, platinum, and copper automotive spark plugs.
OilViscosityChart Pro: Motor Oil Viscosity & Temperature Chart
Compare flow rates of 0W-20, 5W-30, and 15W-40 in freezing and high heat conditions.
TirePressureGuide Pro: Cold Tire PSI & Load Rating Chart
Adjust tire inflation pressures for winter cold drops and heavy towing loads.
CarBatteryHealth Pro: Car Battery Resting Voltage & CCA Test
Interpret multimeter readings: 12.6V (100%), 12.4V (75%), and 12.0V (discharged).
GarageStorageLayout Pro: Garage Wall Pegboard & Rack Planner
Plan tool placement, heavy storage shelf dimensions, and work bench footprints.
FirewoodCordCalc Pro: Firewood Full Cord vs Face Cord Calc
Verify 128 cu ft cord volume (4ft x 4ft x 8ft) and compare BTU ratings of oak vs pine.
CompostRatio Pro: Compost Carbon-to-Nitrogen (30:1) Calc
Balance brown leaves and green food scraps to accelerate rich garden compost.
GardenSeedSpacing Pro: Square-Foot Garden & Seed Spacing Guide
Optimal planting density for tomatoes, carrots, peppers, and companion pest repellents.
PlantWateringSchedule Pro: Houseplant Moisture & Watering Alarm
Custom watering schedules and light requirements for pothos, fiddle leaf, and monsteras.
PestControlGuide Pro: Household Pest & Termite Identifier
Identify subterranean termites, carpenter ants, bed bugs, and safe treatment steps.
ApplianceLifeExpectancy Pro: Home Appliance Life Expectancy Guide
Average working lifespans for water heaters, washers, dryers, dishwashers, and roofs.
HomeAuditElectric Pro: Home Appliance Electricity Cost Calc
Calculate monthly dollar cost of running space heaters, refrigerators, and AC units.
SumpPumpCapacity Pro: Sump Pump Head Height & GPH Capacity
Calculate required pump horsepower (1/3 vs 1/2 HP) based on vertical lift height.
WaterHeaterSizing Pro: Water Heater First Hour Rating (FHR) Sizing
Size tank and tankless water heaters based on simultaneous shower and laundry demand.
PoolChemicalBalancer Pro: Swimming Pool Chlorine & pH Balancer
Calculate ounces of muriatic acid, baking soda, and shock based on pool volume.
HvacBtuCalc Pro: Room Heating & Cooling BTU Sizing Calc
Size window air conditioners and mini-split heat pumps based on room square footage.
SolarPanelYield Pro: Solar Panel Array Annual kWh Yield Calc
Estimate annual kilowatt-hour electricity generation based on roof azimuth and tilt.
InsulationRValue Pro: Home Energy R-Value Insulation Thickness
Determine required inches of blown cellulose or fiberglass batts to hit R-38 / R-49.
FencePostSpacing Pro: Privacy Fence Post, Rail & Picket Calc
Calculate 4x4 posts spaced at 8ft, 2x4 stringers, and dog-ear pickets for any perimeter.
DeckLumberBuilder Pro: Deck Joist Spacing & Decking Board Calc
Calculate pressure-treated 2x8 joists, 5/4x6 decking boards, and concrete post footings.
BrickBlockCalc Pro: Concrete Block (CMU) & Mortar Bag Calc
Calculate 8x8x16 cinder blocks and type S mortar bags for foundation and garden walls.
DrywallHangCalc Pro: 4x8 Drywall Sheet & Joint Compound Calc
Estimate sheetrock count, drywall screws, paper tape rolls, and joint compound buckets.
RoofShingleCalc Pro: Roofing Squares & Shingle Bundle Calc
Calculate bundles of architectural shingles based on roof pitch multiplier and area.
PlumbingPipeFlow Pro: Plumbing GPM Flow & Pipe Sizing Table
Size PEX and copper water supply lines based on fixture units and water pressure.
WireCraftElectric Pro: Wire Gauge Ampacity & Voltage Drop
Select Romex wire sizes (14/2, 12/2, 10/2) based on circuit breaker amps and run length.
LawnCareMaster Pro: Turf Fertilizer & Grass Seed Calc
Calculate pounds of nitrogen per 1,000 sq ft and spreader dial calibration.
HomeReadyInventory Pro: Home Insurance Asset Itemizer
Catalog household electronics, serial numbers, and receipts for insurance claims.
PocketBizRegister Pro: 100% Offline Retail Cash Register
Simple barcode point-of-sale register with receipt printing and cash drawer audit.
GarageFuelEconomy Pro: Real-World MPG & Fuel Cost Trip Calc
Calculate exact fuel cost for road trips based on current gas price and vehicle MPG.
AutoGuardMaintenance Pro: Vehicle Service & Oil Change Log
Track oil changes, brake pads, tire rotations, and spark plug replacement intervals.
FloorTileMaster Pro: Floor Tile, Grout & Waste Percentage
Calculate tile box counts with 10% cut waste and pounds of sanded/unsanded grout.
StudFramingPro: 16-Inch Wall Stud & Header Lumber Calc
Calculate 2x4 and 2x6 studs, top/bottom plates, and headers for partition walls.
PaintEstimator Pro: Interior & Exterior Paint Gallon Calc
Subtract window/door openings to calculate exact paint gallons and primer needed.
ConcreteSlabUtility Pro: Concrete, Gravel & Slab Calculator
Calculate cubic yards of ready-mix concrete, 80lb bags, and crushed stone base.
HighPeakSummitLog Pro: State High Points & 14er Summit Log
Track summits across Colorado 14ers and all 50 US state elevation high points.
NationalParkChecklist Pro: All 63 US National Parks Passport
Check off parks visited, record dates, and view top trails for every national park.
GeocacheNotebook Pro: Offline Geocache Logbook & ROT13
Decode ROT13 cache hints and keep personal discovery logs without internet access.
CaveExplorationGuide Pro: Spelunking & Cave Survey Safety
Three points of contact, three sources of light, and underground navigation rules.
DiveTableNavy Pro: US Navy No-Decompression Dive Table
Check bottom time limits and repetitive dive group designations to avoid the bends.
ScubaGasBlender Pro: Nitrox Partial Pressure & EAD Calc
Calculate Equivalent Air Depth (EAD) and Maximum Operating Depth (MOD) for EAN32/36.
BowSightTape Pro: Archery Compound Bow Sight Tape Builder
Generate precise yardage marks for 20, 30, 40, 50, and 60 yards based on arrow FPS.
BallisticsDropCalc Pro: Rifle Bullet Drop & Wind Drift Calc
Calculate bullet drop in inches and MOA/MRAD turret clicks out to 1,000 yards.
HuntingSeasonPlanner Pro: Legal Shooting Hours & Sunrise Calc
Know the exact 30 minutes before sunrise and after sunset legal shooting windows.
FishingBiteTimes Pro: Solunar Theory Major & Minor Bite Times
Predict peak game fish feeding windows based on sun and moon transit overhead.
AnchorRopeScope Pro: Marine Anchor Scope & Chain Length Calc
Calculate 5:1 and 7:1 anchor rode length based on water depth and tidal range.
BoatingRulesOfRoad Pro: Inland & Marine Navigation Lights
Identify port/starboard lights, towing vessels, and give-way vessel right-of-way rules.
WhistleCode Pro: International Distress Whistle Trainer
Master 3 loud blasts for distress and 2 blasts for call-back in search operations.
SignalMirrorAngle Pro: Search & Rescue Signal Mirror Aiming
Diagrams and aiming drills to flash aircraft and distant searchers up to 10 miles.