Calc Engine vs CountTally

Calc Engine™ — The Calculator That Fits How You Work Whether you're splitting a dinner bill, plotting an equation, or working through bitwise logic, Calc Engine meets you where you are. It's a beautiful, fully customizable calculator that grows with you — and syncs seamlessly across iPhone, iPad, Mac, and Apple Watch. Make it look and feel like yours • Choose from rich color themes to match your style • Pick the fonts and key shapes that feel right in your hands • A calculator you actually enjoy opening Design keyboards your way • Build your own keyboard pages — drag any key from a curated library onto a 4×5, 5×5, or 6×5 grid • Mix digits, operators, scientific functions, your own constants — anything you reach for often, all in one place • Set a long-press alternate on any key so a single tile handles a primary and secondary action • Name each keyboard, pick its icon, and reorder it alongside the standard pages — your custom keyboards show up right where you'd expect them • Enable or disable any page (built-in or custom) per device Build your personal math library • Define your own functions with up to three parameters — name them whatever makes sense to you • Save the constants you use all the time and insert them with a single tap • Full calculation history, automatically saved — scroll back anytime Powerful math, always within reach • Trig (radians or degrees), logarithms, exponentials, roots, and more — there when you need them, out of the way when you don't • Live results as you type, so you always know where you're headed • Per-function rounding built in — perfect for money, measurements, or anything that needs a clean output Convert between hundreds of units in seconds • Tap a value, then any two units to see the conversion live — miles to km, lb to kg, °F to °C, gal to L, anything you need • 250+ built-in units across 40+ categories: length, mass, volume, temperature, time, speed, angle, energy, power, pressure, electrical, magnetic, optical, radioactivity, data, and more • Favorite the categories you actually use so they sit at the top — synced across your devices automatically • Build your own functions with conversions baked in — define a formula once and reuse it forever See your equations come to life in graphs • Plot equations like x = y² or sin(x) live as you type, right beside the keyboard • Tap any graph to expand into a full-screen view for closer inspection • A dedicated graphing keyboard with x, y, and = keeps everything in one place — no separate app, no separate mode Solve equations as you type • Type x² = 121 or sin(x) = 0.5 and Calc Engine finds every real answer • Tap the solved answers to reuse it in your next calculation, no separate "solve" mode Programmer mode without leaving the calculator • Type hex (0x), binary (0b), and octal (0o) literals — read and write the way you read code • A full bitwise toolkit: AND, OR, XOR, NOT, shifts, and rotates • Every result shown in HEX, DEC, OCT, and BIN simultaneously, with configurable word size (8/16/32/64) and signed/unsigned interpretation • Tap the binary row to expand into a byte-by-byte view with bit-position labels Private by design • Everything syncs through your personal iCloud — nothing stored on our servers • Fully localized and native on every Apple platform Unlock Calc Engine+ for the full experience — custom themes, fonts, key shapes, custom keyboards, user-defined functions, saved constants, unit conversions, live graphing, equation solving, programmer-mode hex/binary/bitwise, and more. Everything that makes Calc Engine truly yours. Teach it your formulas once. Customize it to feel like home. Use it forever.

CountTally is the most powerful tally counter you'll ever use — and counting is free, forever. Whether you're tracking reps at the gym, doing inventory, building habits, counting laps, birds, sales, cars or prayers, keeping score on game night or running a live event, CountTally turns "just a counter" into a beautiful, seriously capable tool. Offline-first and private by design — your data stays on your device, encrypted. WHY COUNTTALLY • Count anything: unlimited counters and groups • Big, satisfying tap targets — the whole screen counts, so you can tap one-handed without looking • 100% offline and private (encrypted local storage). No account required, ever. • Beautiful and truly yours: light & dark, custom themes and colors COUNT YOUR WAY • Custom step size, min/max limits, decimals and negative values • Loop mode: wrap around when you reach your target • Start value, plus a lap "round size" with a progress ring that fills as you count • Set values directly, reset in one tap, undo mistakes • Per-counter icons (hundreds of symbols + emoji), colors and dial shapes: circle, rounded, pentagon, hexagon, octagon • Count sounds, milestone sounds and haptic feedback — tune the feel of every tap • Left/right button layout and placement to match your hand STAY ON TRACK • Goals (daily or total) and streaks that keep you motivated • Rich statistics: summaries, charts and a calendar heatmap of your activity • Sessions & a built-in stopwatch — time your workouts or work blocks while you count • Auto-count: let CountTally tick automatically at your interval or BPM • Quick-action buttons (+5, +10, −5 …) for fast, big jumps • Reminders so you never miss a count ORGANIZE EVERYTHING • Groups with optional live sums • Tags to categorize and filter across counters, with per-tag stats and heatmaps • Templates to spin up new counters in seconds • Home-screen widgets — count without even opening the app DO MORE WITH FORMULAS • Formula counters compute one value live from others: A − B, sums, averages, min/max and counts over whole groups — perfect for leads, differences and totals that update themselves PLAY & COLLABORATE • Scoreboards for game night, sports and competitions — multiple layouts and a game clock • Live rooms: count together with others in real time, invite by username, and see who counted what • Stream / OBS overlays for creators and live events — put your counters right on your broadcast EXPORT & BACKUP • Export to CSV, PDF or image and share in a tap • Full local backup & import — your data is always yours EVERYWHERE • iPhone, iPad, the web and Windows — the same counters, wherever you are SIMPLE, FAIR PRICING • Free forever — fully usable for counting (with ads) • Lifetime: remove ads and unlock the full local depth, one time • Pro: secure sync across all your devices (no vendor lock-in) • Premium: rooms, live collaboration and stream overlays Start counting in seconds. Grow into the most powerful tally counter when you're ready. LEGAL Terms of Use: https://counttally.com/en/nutzungsbedingungen.html Privacy Policy: https://counttally.com/en/datenschutz.html