Reflex

Hand-eye coordination and reaction speed

Games in this category

4

Reaction Time Test Brain Games Wait for the color change, then click to measure reflexes. Flash Direction Reflex Brain Games An arrow flashes — press the matching direction key fast. Target Catch Brain Games Falling targets — move to catch them. Aim Benchmark Brain Games Click as many small dots as possible in 30 seconds.

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Convert between text encodings and data formats

Hash & Crypto13

Hashing, key generation and encryption checks

Data & Format12

Convert and beautify JSON, XML, YAML, CSV

Regex, cron, JWT, SQL and everyday dev helpers

IP, subnet, MAC and port calculations

Case, stats, dedupe and cleanup for text

QR codes, placeholders and image helpers

Percentages, temperature, dates and units

Sequence and working memory training

Sustained attention and rhythm control

Logic, pattern recognition and thinking games