Classic
Everyday calculations
The studio’s first app
A calculator that does far more than calculate.
Arithmetic, maths, geometry, statistics, conversions and practical tools in one simple, pleasant interface.
- 10 modules
- 8 themes
- 8 languages
- 22 regions
- Smart input
- Works offline
A look at Calqira
Your tools, always within reach
The home screen follows how you work: whatever you use most stays at the top.
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The ten modules
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Classic calculator
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Math module
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Tip & Split
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Geometry
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Scientific calculator
Swipe to see the other screens.
Real screenshots of the app, taken on an Android phone.
Favourites
Pin the modules you open every day with a single tap on the star.
Recent
The tools you used last automatically come back to the top of the list.
Quick access
A clear navigation bar: home, modules, history, favourites, settings.
Smart input
Write the calculation, Calqira reads it
A smart input field opens the home screen: type the operation the way you would say it.
Percentages, durations, fractions — the expression is read as written, without opening a module first.
Smart input
Modules
Everything you need
Ten modules built for everyday life, school and work. Each one opens in a single tap from the home screen.
Scientific
Advanced functions
Maths
Fractions, equations and more
Statistics
Averages, median, spread
Geometry
Area, volume, Pythagoras
VAT / Discount
Business calculations
Tip & Split
Share the bill easily
Time
Durations and stopwatch
Dates
Date calculations
Converter
Units and measures
Themes
Choose your style
Calqira changes mood completely with the theme you pick — colours, cards and small illustrations included.
Tip: tap a theme to apply it to this site straight away.
The studio
Croxal Digital Studio
Simple, useful, carefully crafted apps.
Croxal is the name under which I design and publish my mobile apps. The approach is deliberately small-scale: few apps, but each one thought through in detail, from the first screen to the last icon.
Calqira is the first app released under this name. Others will follow in the same spirit: quiet, fast, pleasant to use every day.
Simple above all
No account, no tutorial: the app is usable from the very first second.
Light and fast
An app that opens instantly and uses almost nothing.
Detailed by hand
Spacing, colours, icons: every screen is drawn, not assembled.
The catalogue
The apps
The list is deliberately short.
Calqira
AvailableA calculator that does far more than calculate.
Everyday maths, geometry, statistics, conversions and practical tools in one simple, pleasant interface. Ten modules, eight themes, eight languages, 22 regions.
CarbuSense
Coming soonReal fuel use and costs. No invented numbers, no account, no cloud.
Refuel tracking for one vehicle: real consumption, real cost, history and statistics. Partial fills are counted properly, currencies are converted at the rate of the day, and your data stays on the phone.
Next app
Coming soonThe studio releases little, but releases it well. The next app is being designed.