A Zetamac alternative that shows what slows you down

Zetamac is the standard quick test of mental arithmetic: two minutes, four operations, one score. Zetapro keeps those rules and adds stats, drills and goals around them. It is free, runs in the browser, and is not affiliated with Zetamac.

What stays the same

Zetapro's Classic mode follows Zetamac's rules and default settings:

• Addition of two numbers from 2 to 100, and subtraction as addition in reverse.
• Multiplication of 2–12 by 2–100, and division as multiplication in reverse.
• A 120-second round, with each answer accepted the moment it's right, so there's no Enter key.
• Operations, number ranges and the round length (30 seconds to 10 minutes) can all be changed.

Because the defaults match, a Classic score on default settings is meant to be comparable with a score on Zetamac's default game.

What Zetapro adds

Stats on every answer

Every answer is timed and sorted by type: carries, borrows, each times table, two-digit products. Stats show which types cost you the most time, a factor map of your times tables, your mistake patterns, and a skill level for each operation. Level 6 is fast enough for a Classic score of 60–69.

Drills aimed at your weak spots

Smart drills are built from your slowest problem types, with your pace tracked minute by minute. Problems you miss come back on a schedule, the next day and then 3 and 7 days later, and retire after three clean reviews.

Goals and habits

Set a target score and see how often you hit it, compare each round with your recent average, pick a weekly practice goal, and keep a calendar and streak. The Daily Challenge is one shared 120-second set a day, where your first try counts.

More than whole numbers

80 in 8 is a round of 80 multiple-choice questions in 8 minutes with decimals, fractions and missing numbers. There are also probability and quant reasoning games for trading interview prep.

On every device

Play in the browser, add Zetapro to your phone's home screen to play offline with a built-in number pad, or download the Windows app. Optional Google sign-in syncs your games across devices; without it, games stay on your device. Press Tab to restart a round instantly.

When to use which

Zetamac is ideal for a quick round with nothing to set up, and its score is a common reference point. Zetapro is for when your score has stopped improving and you want to know why, or when you're preparing for a trading interview and need more than whole-number arithmetic. Since the Classic defaults match, it's easy to use both.

Zetapro is an independent project, not affiliated with or endorsed by Zetamac. Zetamac is named here only to describe Classic mode's rules and settings.