Calqo
MASTER TECH GROUP PTY LTD Tools
Scientific calculator that reads a whole expression. Fractions, units, hex.
- Price
- Free
- No in-app purchases
- Updated
- Oct 18
- 2026 · v1.0
Screenshots
About Calqo
Calqo is a calculator you type a whole line into.
Write `(1 284.75 × 1.2) + 18% − (3 1/8 × 42)` and it reads the brackets, applies the percentage to the running total, keeps the mixed fraction exact, and shows you — line by line — how it interpreted every part before it gives you a number.
Fractions stay fractions. A third plus a sixth is exactly a half, not 0.4999999999. When a result is rational, Calqo shows it as a fraction, as a mixed number and as a decimal, with the simplification steps if you want to see them.
Units travel through the arithmetic. Twelve metres times three and a half metres is forty-two square metres, ninety kilometres over an hour and a half is sixty kilometres an hour, and adding metres to seconds is refused rather than quietly answered.
Programmer mode shows hexadecimal, decimal, octal and binary at the same time, with a sixty-four bit grid you can flip a bit at a time and full bitwise operations at 8, 16, 32 or 64 bits.
There is also a statistics mode that takes a pasted column, ninety-six constants that carry their SI units, the six percentage questions people actually get wrong laid out as forms, and a history of every line you have ever solved that you can search and reload.
When Calqo cannot read something, it says where and why. It never turns a malformed expression into a number you might trust.
Zero Android permissions, no account, no network code, no advertising.
Write `(1 284.75 × 1.2) + 18% − (3 1/8 × 42)` and it reads the brackets, applies the percentage to the running total, keeps the mixed fraction exact, and shows you — line by line — how it interpreted every part before it gives you a number.
Fractions stay fractions. A third plus a sixth is exactly a half, not 0.4999999999. When a result is rational, Calqo shows it as a fraction, as a mixed number and as a decimal, with the simplification steps if you want to see them.
Units travel through the arithmetic. Twelve metres times three and a half metres is forty-two square metres, ninety kilometres over an hour and a half is sixty kilometres an hour, and adding metres to seconds is refused rather than quietly answered.
Programmer mode shows hexadecimal, decimal, octal and binary at the same time, with a sixty-four bit grid you can flip a bit at a time and full bitwise operations at 8, 16, 32 or 64 bits.
There is also a statistics mode that takes a pasted column, ninety-six constants that carry their SI units, the six percentage questions people actually get wrong laid out as forms, and a history of every line you have ever solved that you can search and reload.
When Calqo cannot read something, it says where and why. It never turns a malformed expression into a number you might trust.
Zero Android permissions, no account, no network code, no advertising.