NerdCalc vs UnitFlowPro

NerdCalc is a binary, hexadecimal and decimal calculator that displays all three number bases at the same time. With NerdCalc, you can quickly switch which base you are inputting and the result of your calculations is always updated for all three bases, no matter what the current input mode. NerdCalc supports both unsigned and 2’s complement, to allow for negative numbers, and can perform basic arithmetic and logic operations as well as bitwise shifting. Enjoy!

UnitFlowPro — Unit Converter The last unit converter you'll ever need. 30+ categories, powerful tool cards, and a clean interface that gets out of the way. No ads. No subscription. Just a fast, capable converter that respects your time. Paste & Convert Copy a value from anywhere — a recipe, a weather app, a text message — and UnitFlowPro instantly detects it. One tap converts it in the right category automatically. Favourites Star the units you use every day. kg → lbs. Miles per hour. Fahrenheit. Starred units float to the top of every list so your most-used conversions are always one tap away. Remembers Where You Left Off Switch to Temperature, come back later, and UnitFlowPro opens exactly where you were. Every category remembers your last active unit. 30+ Conversion Categories Length · Weight · Temperature · Volume · Speed · Area · Pressure · Energy · Data · Cooking · Time · Angle · Force · Power · Fuel Economy · Currency · Blood Glucose · 3D Printing · Electronics · Networking · Screen · Cannabis · Numeral Systems · Color · Fraction · Woodworking · Age · Shopping · and more. Powerful Tool Cards Go beyond simple conversions with built-in calculators: BMI Calculator Tip & Discount Calculator Fuel Economy & Trip Cost Pace Calculator (running, cycling, swimming) Time Zone Converter Age Calculator EV Charging Estimator Ohm's Law Solver Paint & Flooring Estimator Concrete Calculator Recipe Scaler Screen PPI & Aspect Ratio Transfer Time Calculator Unit Price Comparator Expression Calculator Type mixed-unit expressions like 2 ft + 6 in + 5 cm and get an instant result. Supports +, −, ×, ÷, parentheses, and unit suffixes. Built for Daily Use Live currency rates with offline fallback Conversion history with pins, notes, and restore iCloud sync across all your Apple devices Siri & Shortcuts integration — just say "convert 12 feet to meters" Spotlight deep links — search any category from the home screen Share conversions as images Comparison charts across all units Category reordering and hiding Dark, Light, and System appearance modes Dynamic Type and VoiceOver accessibility support Mac Catalyst support No Ads. No Subscription. No Nonsense. UnitFlowPro is a one-time purchase. Everything included, forever.