Best x36 alternatives: apps like x36

10+ similar apps compared and reviewed

4.4 avg rating

6 free apps

Updated October 2026

x36

Carl Cook

🔧 Utilities

📊 Productivity

x36 is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to x36

Dreadnought Tachymeter by AARON L SHURTLEFF

Measure pace instantly.

Editor's Choice

🔧 Utilities

5.0(3 ratings)

Free

This minimalist stopwatch instantly converts elapsed time into your rate per hour. Track laps, tasks, or any unit of time without manual calculations. Ideal for runners, cyclists, and productivity tracking.

SFX Scientific Calc Premium by Wai Kwong Lee

Engineering Math & Statistics

Strong Contender

🔧 Utilities

4.3(3 ratings)

$5.99

SFX Scientific Calc Premium screenshot 1

SFX Scientific Calc Premium screenshot 2

SFX Scientific Calc Premium screenshot 3

SFX Scientific Calc Premium screenshot 4

SFX Scientific Calc Premium screenshot 5

SFX Scientific Calc Premium screenshot 6

This scientific calculator offers advanced functions for academic, scientific, and engineering needs. It supports basic arithmetic, memory storage, statistical calculations, and various mathematical functions. The interface mimics a popular Casio model for ease of use.

my59 by Miroslav Perovic

Classic calculator emulator

Worth Considering

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

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This app faithfully recreates the legendary HP 16C Computer Scientist calculator, offering advanced hex arithmetic, bit manipulation, and base conversion. It features RPN, keystroke programming, and modern enhancements like a two-line display and haptic feedback.

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This app faithfully recreates the TI-57 programmable calculator, offering its full scientific functions and programming capabilities. It includes a user manual, sample programs, and features like turbo speed and alphanumeric display.

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Flags! - Maritime signal flags

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This app provides a comprehensive reference for all International Maritime Signal Flags, including letters, numbers, and substitutes. It features interactive quizzes to test your knowledge and offers Morse code examples.

Complete list of maritime signal flagsDetailed flag viewsInteractive learning quizzes

RPN Calculator. HP-35, 45, 21

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Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.

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HP15C: Scientific Calculator

Classic Science Calc for you

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Relive the classic computing experience with a vintage scientific calculator. This app emulates a beloved 90s model, offering a nostalgic and functional tool for calculations.

Vintage scientific calculator emulationClassic 90s designFunctional for scientific calculations