Human Benchmark (humanbenchmark.com) is the original, well-known site for quick reaction time and memory tests. ReflexBenchmark offers a broader test suite with account-based progress tracking. Here's an honest comparison to help you decide which fits what you're looking for.
| Feature | Human Benchmark (classic) | ReflexBenchmark |
|---|---|---|
| Total tests | ~11-12 core tests | 27 tests |
| Reaction Time Test | Yes | Yes |
| Verbal / Number / Visual / Sequence Memory | Yes | Yes |
| Chimp Test, Aim Trainer, Typing Speed | Yes | Yes |
| Stroop, Flanker, Go/No-Go, N-Back, Digit Span, Corsi Block | Not on classic site | Yes |
| Audio Reaction, Choice Reaction, Cognitive Reflection, IQ Test | Not on classic site | Yes |
| Color Blindness, Color Perception, Hearing Frequency | Not on classic site | Yes |
| User accounts / login | No | Yes |
| Personal progress dashboard | No | Yes |
| Daily challenge | No | Yes |
| Global leaderboard | Yes | Yes |
| Free to use | Yes | Yes |
Human Benchmark is a solid, no-frills tool for quick reaction time and memory checks - that simplicity is exactly why it's popular. Some users look for an alternative when they want a wider range of cognitive domains covered (like sustained attention, response inhibition, or color perception), or when they want their scores saved and tracked over time rather than a one-off result.
ReflexBenchmark covers the same core tests you'd expect - reaction time, memory, typing speed, aim training - and extends into attention and executive function (Stroop, Flanker, Go/No-Go), working memory (N-Back, Digit Span, Corsi Block), and perception (color blindness, color perception, hearing frequency). If you create a free account, your results are saved to a dashboard so you can track how your scores change over weeks or months, and a daily challenge gives you a reason to come back and retest.
If you just want a fast, no-signup reaction time check, Human Benchmark's classic site does that well. If you want a broader set of tests across more cognitive domains, plus the ability to track your own progress over time, ReflexBenchmark is built for that. Many people end up using both.
Yes, all tests on ReflexBenchmark are free to use. Creating an account is optional and only needed if you want to save your score history.
It depends what you're looking for. ReflexBenchmark covers more cognitive domains and adds account-based progress tracking, while Human Benchmark's classic site is a simpler, no-signup option for quick checks.
Yes, if you create a free account, your scores are saved to a personal dashboard so you can track changes over time.
ReflexBenchmark includes Stroop, Flanker, Go/No-Go, N-Back, Digit Span, Corsi Block, Audio Reaction, Choice Reaction, Cognitive Reflection, an IQ test, and perception tests like color blindness and hearing frequency, none of which are on the classic Human Benchmark site.
No, you can take any test as a guest. An account is only needed if you want your scores saved and tracked over time.
Your test scores are used to show you percentile comparisons and, if you're logged in, your personal dashboard. See our privacy page for full details on data handling.
Yes, ReflexBenchmark has a global leaderboard where you can see how your scores rank against other users.
The tests are built on established cognitive psychology paradigms, such as the Stroop effect and digit span tasks. They're designed for self-benchmarking and are not a substitute for a clinical assessment.
Yes, all tests are designed to work in mobile browsers, though tests involving precise timing (like reaction time) may be affected by touchscreen input latency.
ReflexBenchmark regularly adds new guides and articles covering cognitive science topics like memory, focus, and reaction time.