DuelTool vs MB 89F Standard Calculator

[Features of the application] This is a tool to use when the duel in YU-GI-OH!. Can calculate the Life Points of the player. [How to use] When the bar is red, Life Points will reduce. Conversely, When the bar is blue, Life Points will increase. If you tap the Life Points part, you can change the player to reduce the Life Points. [Other Functions] Calculation of the Battle Phase damage.(VS button) Supports Shrinka and Solemn Judgment.(1/2 button) Supports dice and coin. Supports undo and reset. Can customize the upper 3 buttons from setting screen. Come on, let's start duel! #This app and developers, have no relationship with KAZUKI TAKAHASHI/SHUEISHA /KONAMI.

MB-89F is a calculator that can think in exact fractions. Note: this is a standard format calculator with a normal equals key. If you are looking for the RPN version of the calculator, please download the MB-88F version, which utilizes Reverse Polish Notation. Every value is kept as a whole-number numerator over a whole-number denominator, so the math never drifts. 1/3 + 1/6 is exactly 1/2, never 0.4999. Whether you're cutting a board, scaling a recipe, piecing a quilt, or checking fraction homework, the answer stays exact — and inches and millimeters relate by the exact definition 1 in = 25.4 mm, so conversions never lose a thousandth. HOW IT WORKS You key a calculation the natural way and press equals. To compute 3/4 + 1/2: key 3 b/c 4, press +, key 1 b/c 2, then press = — the answer 1 1/4 appears. No RPN to learn, no notation to juggle. Operations chain left to right, and pressing = again repeats the last one. A built-in manual, key index, and cheat sheet are right there if you need them. WHAT IT DOES • Exact fraction arithmetic — add, subtract, multiply, divide, always reduced to lowest terms • Mixed-number entry: key 2 SPC 1 b/c 2 for 2 1/2 • Tape-measure rounding to 1/8, 1/16, 1/32, or 1/64 — and TRU to restore the exact value • Fraction ↔ decimal conversion both ways • Exact unit tagging and conversion: inches, feet, millimeters, meters • Feet read as feet plus fractional inches (22.5 ft → 22 ft 6 in) POWER KEYS • 1/x, x², and √x for diagonals and right-triangle math • ½x to instantly find a centerline, 2x to double it • Store/recall memory (STO/RCL) to hold and reuse a value • History tape — tap the display to see your last 100 results and bring any of them back with a tap MADE TO LIVE WHERE YOU WORK • Universal — one app, built for both iPhone and iPad • Your value, memory, and history are saved between sessions — pick up right where you left off • 11 color themes • Optional thousands separator and fixed decimal places • Built-in user manual, key index, and cheat sheet • Works 100% offline. No account, no ads, no tracking, no data collected — ever. Try it free for 2 days, then unlock the full app forever with a single one-time purchase — no subscription. Woodworkers, machinists, carpenters, and framers rely on it — and so do quilters and sewists, cooks scaling recipes, students working through fraction homework, and anyone who'd simply rather see 3/4 than 0.75. If you think in fractions, MB 89F keeps them exact.