Benchmento is a free set of browser tests that measure reaction time, working memory, aim and typing speed, plus a handful of puzzles and daily games. If you came here looking for something like Human Benchmark, the short answer is that seven of the tasks are the same in kind, there is no account, and nothing you do is stored on a server. Benchmento is independent and not affiliated with Human Benchmark.
That last point matters more than it usually would, because searching for the name turns up a long list of near-identical copies on similar domains. This page is not one of those. It is a different site with its own tests, and the comparison below is meant to be accurate rather than flattering.
| Task | Both sites | What Benchmento does differently |
|---|---|---|
| Reaction time | Click when the panel turns green | Five attempts, percentile from published curves |
| Sequence memory | Repeat a lengthening pattern of tiles | Repeated tiles flash twice, so a doubled step is readable |
| Number memory | Recall a lengthening string of digits | Same task, no account to save it |
| Visual memory | Recall a grid of lit squares | Same task |
| Chimp test | Numerals appear, then hide, tap in order | Same task, with an FAQ on what the Kyoto study actually showed |
| Aim trainer | Hit thirty targets as fast as you can | Time per target and accuracy |
| Typing speed | Words per minute from a passage | Three durations, live accuracy |
What is the same
The overlapping tasks measure the same things and are constructed the same way. Simple visual reaction time is a green panel and a click. Sequence, number and visual memory are span tasks that grow by one step until you fail. The chimp test flashes numerals and hides them. Aim is thirty targets. Typing is words per minute from a passage.
Hardware noise is real on both sites and it is not small. A browser reaction time includes your monitor's refresh interval, your mouse or keyboard polling rate, and whatever the browser was doing at that moment. That is typically thirty to sixty milliseconds of the number, and it is why a score from a gaming setup and a score from a laptop trackpad are not really the same measurement. Neither site can remove it.
What is different
There is no signup here and no cloud. Your personal bests, streaks and unfinished puzzles are written to your browser's local storage and never leave the device. There is no account to create, no password to lose, and no public leaderboard.
The trade is that your record is only as durable as your browser. Clearing site data clears it, and Safari on iPhone and iPad deletes local storage for sites you have not visited in about two weeks. Your bench has an export button that saves everything to a file you can import on another device, and that file is the only backup that exists.
Percentiles come from published score distributions for each task rather than from other people who used this site. That is a deliberate choice. Ranking you against visitors to a reflex-testing website compares you to a self-selected group that is faster than the general population, which makes the number mean less rather than more. The cost is that there is no live global board to watch.
Benchmento also has tests Human Benchmark does not: click speed, spacebar speed, dot counting, a hidden clock, and four daily puzzles that change at midnight. Human Benchmark has a verbal memory test that Benchmento does not.
The daily puzzles are the clearest structural difference. A word game, a shape-splitting test, a centre-of-mass test and a colour-matching test each give everyone the same puzzle on the same day, with one attempt and a small grid you can post afterwards. There is also a set of puzzles and card games that has nothing to do with cognitive measurement at all, which is either a bonus or beside the point depending on what you came for.
Who should use which
If you want a global leaderboard, a saved account across devices, or the verbal memory test specifically, use Human Benchmark. Those are real features and this site does not have them.
If you would rather not create an account, want your scores to stay on your machine, or want a daily puzzle and a set of games alongside the tests, this is the closer fit. Both are free.
Common questions
Is Benchmento affiliated with Human Benchmark?
No. Benchmento is an independent site with its own tests. It is not affiliated with, endorsed by, or connected to Human Benchmark, and it is not one of the copies of that site that appear on similar domain names.
Do I need an account?
No. There is no signup, no login and no password anywhere on the site. Every test and game is playable immediately.
Are the scores comparable between the two sites?
For the overlapping tasks, broadly yes, because the tasks are constructed the same way and measured in the same units. The percentiles are not directly comparable, because they are calculated differently: Benchmento uses published population distributions, and a site with accounts can rank you against its own users.
Where are my scores stored?
In your browser's local storage on the device you played on. Nothing is uploaded. You can see everything held about you on your bench, export it to a file, or delete all of it at once.
Why do the same tests give different numbers on different devices?
Because the measurement includes your hardware. Monitor refresh rate, input polling and browser timing all sit inside a reaction time score. Compare your results against your own past runs on the same device rather than across machines.