Classic
Everyday calculations
A 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.
Smart input
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
Ten modules built for everyday life, school and work. Each one opens in a single tap from the home screen.
Everyday calculations
Advanced functions
Fractions, equations and more
Averages, median, spread
Area, volume, perimeter
Business calculations
Share the bill easily
Durations and stopwatch
Date calculations
Units and measures
Features
The details that matter when you open a calculator ten times a day.
Full history
Find your previous calculations and reuse a result in one tap.
Custom favourites
Any module can be pinned to the top of the home screen.
Offline
Every calculation runs on the device, no connection required.
Eight themes
From the most restrained to the most playful, the interface follows your mood.
Eight languages
The app follows your phone’s language, with nothing to configure.
Lightweight
A compact app that starts immediately.
Themes
Eight themes change the whole feel of the app. Here are four of them, in real screenshots.

Modern

Cat

Flower

Heart

Anime

BlockCraft

Build City

Pixel Adventure

Choosing a theme
Swipe to see the other screens.
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.
Themes
Every module icon is redrawn for the theme. These are the real illustrations from the app.
Four of the eight themes have their own icon set. The others restyle the standard icons.
8 languages
The app speaks eight languages and follows your device automatically. This site speaks the same eight.
22 regions
A language is not a country. Calqira also asks where you are, then adapts its currency, its VAT rate, its unit system and its number format.
1 250,50 or 1,250.50
In France it writes the first, in the United Kingdom the second — and it reads both, whichever way you type.
The right VAT rate
Preset for your region, and changeable in the settings whenever you need another one.
Metric or imperial
The converter and the geometry module follow the system your region uses.
Your currency
Shown in the tip, VAT and discount modules, without any conversion or network call.
Region and language are set separately: you can read the app in English and keep euros, metric units and a French VAT rate.
Advertising and funding
Calqira is free. A banner at the bottom of the screen funds its development.
The banner is served by Google AdMob, and it is the only part of the app that talks to the outside world. Everything else — every calculation, every setting — happens on your phone.
The ad request goes out with no targeting attached: no keyword, no content, no category derived from how you use the app. Nothing you calculate goes into it. In Europe, the United Kingdom and Switzerland, a consent form appears on first launch, and no ad is requested until you have answered.
Nothing you type leaves your phone. The policy says exactly what the banner receives — and what it never receives.
https://www.croxal.com/privacy/calqira/
The store listing is not published yet. The link will appear here as soon as it goes live.
To replace: put the real Google Play listing URL in /data/apps.json, in the app’s "googlePlayUrl" field.