Ultrya Design

Building simple, useful tools

About

Independent developer & maker, building free calculator and conversion apps for everyday use — CalculatorHex, FamilyCalculator, and more coming.Independent developer & maker, building free calculator and conversion apps for everyday use — CalculatorHex, FamilyCalculator, and more coming.

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Gone streaking

Maker History

Family Calculator27 free calculators for everyday family decisions
Sep 2026
CalculatorHexHex, binary & color conversion — no Googling required
Sep 2026

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Joined Product HuntAugust 3rd, 2026

Forums

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1mo ago

Family Calculator - 27 free calculators for everyday family decisions

FamilyCalculator is a free toolbox with 27 calculators built for real family decisions — from splitting chores fairly to planning a babysitter budget or tracking a baby's first-month costs. Organized into 4 categories: Money, Time, Fun, and Fair Play. No sign-up, no clutter, no complicated spreadsheets. Just pick a calculator and get your answer in seconds. Available free on iOS and Android.

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2mo ago

CalculatorHex - Hex, binary & color conversion — no Googling required

CalculatorHex is a free toolbox built for developers tired of Googling the same conversions. Hex to decimal, hex to binary, hex to RGB, ASCII to hex, and 30+ more calculators — all in one clean, fast app. No sign-up, no clutter, no ads in your way. Just open it, convert, done. Built by a small team frustrated with re-searching hex-to-color conversions for the hundredth time. Free on iOS and Android.