Calc Engine vs Calqulist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc Engine
A highly customizable calculator with advanced features like graphing, equation solving, and unit conversion. Design your own keyboards and functions to streamline your workflow across Apple devices.
- Customizable keyboard layouts
- User-defined functions and constants
- Live equation graphing
- Equation solving
- Extensive unit conversions
- Programmer mode (hex, binary, octal)
- Cross-device syncing
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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.
Calqulist
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Simple as a calculator. Powerful as a spreadsheet. What if everyday work with numbers didn't require a computer — or even a spreadsheet? Calqulist is built to make that possible. Calculate with the speed of a calculator and the flexibility of a spreadsheet. Convert units instantly. Work with exchange rates. Organize business numbers. Create and share professional PDFs in seconds. All in one place. All without interrupting your work. Calculate. Convert. Organize. Share. YOUR EVERYDAY SPREADSHEET — WITHOUT THE SPREADSHEET Most people don't need hundreds of cells, formulas and menus just to work with numbers. Calqulist turns calculations into simple, editable lists: • Edit any number or operation anytime • Add descriptions to your numbers • Insert, delete and reorder rows • Work with percentages and mathematical functions • Compare numbers and analyze differences • Save calculations and reusable templates • Change anything without starting over It feels like a calculator, while giving you the flexibility that normally sends you to a spreadsheet. CONVERT UNITS — RIGHT WHERE YOU CALCULATE No separate converter. No copying and pasting. No interrupted workflow. Calqulist brings 170+ unit conversions directly into your calculations. Convert length, area, volume, weight and many more units, then keep working with the converted number immediately. Calculate and convert in the same place. EXCHANGE RATES — BUILT INTO YOUR WORKFLOW Working with another currency shouldn't mean switching apps. Access 170 currency exchange rates and work with different currencies directly inside Calqulist. Calculate, convert currencies and continue working with the result — all within the same workflow. FROM CALCULATION TO PDF IN SECONDS The numbers are ready. Why move to a computer just to create the document? Turn your work into customizable professional PDFs for: • Calculations • Estimates and offers • Invoices • Payment records • Reports Create the PDF and share it directly from Calqulist. Calculate. PDF. Send. Done. SHARE EDITABLE WORK — NOT ONLY PDFs Need someone else to continue your work? Share calculations, invoices and payments as editable Calqulist documents. Recipients can open them directly in Calqulist and continue working — just like sharing a spreadsheet. Send a PDF when the work is finished. Send a Calqulist document when the work needs to continue. YOUR BUSINESS NUMBERS IN YOUR POCKET Keep everyday business numbers in the same workspace: • Current assets • Inventory • Cash transactions • Invoices • Delivery notes • Payments • Business performance • Financial ratios • Business overview dashboard From a quick calculation to a professional document or a view of your business, your numbers stay with you. PC-FREE BY DESIGN A calculator for calculating. A spreadsheet for organizing. A unit converter for measurements. A currency app for exchange rates. A computer for creating PDFs. Why should everyday work with numbers require all of that? Calqulist brings it together. Calculator + Spreadsheet flexibility + Unit Conversion + Exchange Rates + Business Numbers + PDF. All in one fast, practical workspace on your iPhone, iPad or Mac. For many everyday calculations, estimates, invoices and business tasks, you may not need to open a spreadsheet — or even your computer. Just open Calqulist and get the work done. Simple. Fast. Flexible. Powerful. Simple as a calculator. Powerful as a spreadsheet. Enjoy Calqulist for free. If it becomes part of your workflow, upgrade to unlock more. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.iappetos.com/privacy.html Thank you for using Calqulist.
Screenshots
Verdict
The clearest difference is update cadence: Calc Engine at daily against Calqulist's every 9 days. Calqulist's advantage is iOS requirement (15.6 vs 18). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Calc Engine sells 1 one-off in-app purchase and Calqulist sells 5 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.
Calc Engine ships an update daily, Calqulist every 9 days. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.
| Parameter | Calc Engine | Calqulist |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Daily — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 18 | 15.6 — better |
| Further details — not scored | ||
| Size | 17 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | VersaEdge Software, LLC | iappetos apps |
In-app purchases
Calc Engine
- Calc Engine+$9.99
Calqulist
- (Unlimited+Adds free) for one year$4.991 Year
- Calqulist Pro$0.99
- +10$0.99
- +50$2.99
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- Golden Calqulist$9.99








