Calqo

Think faster than the numbers.

Calqo trains the mental math that case interviews, trading floors and assessment tests demand, in sessions short enough for a coffee break.

Coming soon on iOS & Android Try a 30-second sprint

Who it is for

For people whose numbers have to be right the first time.

Consulting applicants

Market sizing and case math without a calculator, at interview pace.

Finance and trading

P&L, CAGR and returns in your head, while the conversation keeps moving.

Anyone facing a numerical test

Speed and accuracy under time pressure, for assessment centres and aptitude tests.

Training areas

Four areas. Tap one for a sample.

Gamification & duels

Practice you come back to.

  • Daily challenges, XP, levels and streaks turn five minutes into a habit.
  • 60-second duels against friends: same problems, same clock.
  • Global leaderboards show where you stand.
  • Planned: hubs for clans, universities, clubs and companies.

For consulting applicants

Stay calm when the interviewer asks for a number.

Case interviews reward candidates who keep their structure while calculating. Calqo drills estimation, percentages, growth rates and fractions until they are reflex.

SizeBreak a market into factors and multiply them cleanly.
ShiftPercent changes, margins and break-evens without writing them down.
CheckSanity-check a result in seconds, within a sensible tolerance.

Try it here

Thirty seconds. How many can you solve?

A short sprint, right in your browser.

Type the answer. A correct answer moves on by itself. Nothing is stored or sent.

FAQ

Questions, answered briefly.

Is Calqo free?

Free to start. Optional Premium.

Which platforms does Calqo support?

iOS and Android. Calqo will be available in the App Store and on Google Play.

Do I need an account?

You can train without an email address or password. For duels and leaderboards you choose a username, which creates an anonymous account tied to your device.

Does Calqo work offline?

Training runs on your device. Duels and leaderboards need an internet connection.

How do I delete my account?

In the app under your profile, or by email. The steps are on the delete account page.

Who makes Calqo?

Calqo is made by Praus Software, an independent app studio from Darmstadt, Germany.