SiteCalc vs ENGR*IT

Professional construction calculators for electricians, roofers, carpenters, concrete and paving contractors, HVAC techs, plumbers, masons, painters, floor layers, solar installers, fencers — and the foundations, drywall and business numbers behind every job. Built for tradespeople who need accurate, fast, offline calculations on the job site. No account needed. Calculators work with no internet. FREE IN EVERY TRADE Every trade includes a starter set of full calculators, free forever — try real tools in your own trade before you pay anything. SMART TOOLS • AR Measure: tap point-to-point distances with your camera, no tape needed • Room Scan: capture a room with LiDAR and turn it into instant dimensions • Site Level: use your phone as a digital level and angle finder • Tape Calculator with saved tapes for running totals • Cost Book and reusable estimate templates ELECTRICAL • Voltage drop (NEC / BS 7671 / IEC), wire gauge with temperature and bundling corrections, conduit fill, residential load per NEC 220, ampacity lookup, motor circuit sizing BUSINESS • CAGR, APR, APY, depreciation, future value, loan and lease; cost per square foot, gross pay, effective interest • Project dates: countdowns, days overdue, work days, completion estimates, staffing ROOFING • Pitch converter, roof area (gable, hip, shed, flat), material estimator, rafter length with birdsmouth, common rafters, hip ridge CONCRETE • Volume for slabs, footings, columns and steps, bag estimator, rebar spacing and weight, slab-on-grade CARPENTRY • Board feet, stair layout (2R+T), deck boards, crown angles, plywood, floor joists, subfloor, insulation, ramps, balusters HVAC • BTU load (simplified Manual J), duct sizing, CFM by room, refrigerant charge, fan sizing, attic ventilation, window AC PLUMBING • Pipe sizing, DWV, water heater sizing, drain slope FOUNDATIONS • Footings, columns, slabs, excavation and backfill, grading, squaring, rebar MASONRY • Block walls, core fill, brick, mortar, masonry units, stone retaining walls DRYWALL • Sheets, mud, tape, screws, metal-stud framing PAINTING • Paint gallons, primer, trim, spray coverage, labour FLOORING • Tile, plank, underlayment, grout, transitions PAVING • Asphalt, asphalt parking areas, crushed stone driveways, sealer SOLAR / PV • PV array, string sizing, voltage drop, setbacks FENCING • Posts, rails, pickets, gates, post-hole concrete FEATURES • Calculators work completely offline — no internet required • Supports US (NEC), UK (BS 7671) and EU (IEC) standards • Imperial and metric with instant conversion • Save calculations to history with job names • Export professional PDF reports • Dark mode and large touch targets for gloved hands on site • VoiceOver accessible, Siri shortcuts and widgets PRICING A starter set of calculators in every trade is free forever — no account, no subscription. Own your tools with one-time purchases — no subscription required for calculators: • Trade packs — five bundles grouped by jobsite: Systems (Electrical, Plumbing, HVAC), Structure (Concrete, Foundations, Masonry), Framing & Roofing (Carpentry, Roofing, Solar), Finishes (Drywall, Painting, Flooring), Sitework & Business (Paving, Fencing, Business) • All Trades — every calculator in a single purchase • Power Tools — AR Measure, Room Scan, Site Level, Cost Book and templates, plus unlimited notes and PDF export • Pro Lifetime — every calculator and every power tool, owned outright forever SiteCalc Pro (monthly or yearly, with a 7-day free trial) adds the cloud: iCloud sync across your devices, Crew project sharing, cloud backup for photos, voice notes and scans, new code-edition updates, and Family Sharing — and includes every calculator and power tool while active. If a subscription lapses, you keep everything you bought outright. TERMS OF USE You can find EULA terms of use here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

ENGR*IT is the ultimate calculator for everyone. Whether you need a powerful Standard or Scientific calculator, financial tools, engineering calculations, programmer functions, or bitwise operations, ENGR*IT brings them together in one massive technical toolkit built for engineers, technicians, makers, students, and anyone who works with real-world calculations. Instead of jumping between separate apps, web pages, notes, and reference sheets, ENGR*IT brings 146 calculators and engineering tools together in one focused workspace. CALCULATE ACROSS DISCIPLINES Work with electrical engineering, power, resistor and capacitor networks, PCB design, embedded systems and interfaces, Ohm’s Law, bitwise operations, programmer math, financial calculations, and standard/scientific math. ENGINEERING TOOLS THAT WORK TOGETHER ENGR*IT is designed as more than a collection of isolated calculators. Calculated values can be copied, pasted, shared, or moved directly into another calculator. Use “Move to…” to send a result into another compatible tool and continue your work without re-entering the value. CIRCUIT VISUALIZATION Supported electrical calculations include integrated circuit diagrams that reflect the selected formula and calculated values. Zoom, pan, fit the diagram to the screen, and share the complete calculation artifact. BUILT FOR REAL ENGINEERING INPUT ENGR*IT understands engineering-style values and units. Enter values such as kΩ, mA, µF, MHz, mil, mm, and inches using calculator-specific input controls designed for the type of value being entered. PCB AND EMBEDDED TOOLS PCB tools cover trace width and current, trace resistance and voltage drop, via current, microstrip and stripline, differential pairs, creepage and clearance, copper weight and thickness, AWG resistance, and wire voltage drop. Embedded tools include timers and prescalers, PWM, UART, SPI, I²C, CAN, ADC, DAC, quantization, sampling, and Nyquist calculations. POWER AND ELECTRICAL Work with DC and AC power, single-phase and three-phase systems, inductors, RLC circuits, voltage and current dividers, reactance, resonance, time constants, RMS/peak conversions, dB calculations, wavelength, Zener regulators, battery packs and runtime, and much more. PROGRAMMER + BITWISE Convert between DEC, HEX, OCT, and BIN, work with signed and unsigned values, choose common word sizes, and perform bitwise operations including AND, OR, XOR, NOT, shifts, rotates, set, clear, flip, and read bit operations. YOUR WORK, YOUR WAY ENGR*IT includes calculation history, configurable swipe favorites, global calculator search, exact tool deep-linking, light and dark appearance support, sharing, and persistent last-calculated-value tools. FREE TO START Standard and Scientific calculators remain available without Pro. Start a free 7-day ENGR*IT Pro trial to explore the complete toolkit. After the trial, continue using the free calculators or unlock ENGR*IT Pro Lifetime with a one-time in-app purchase. No subscription. No advertising. ENGR*IT — one engineering toolkit, built to keep the calculation moving.