Two short strings of letters and digits appear, one above the other. They are either an exact match or they differ by a single character. Your only job is to call it, same or different, and move straight on to the next pair. Do as many as you can before the clock runs out. It trains the raw perceptual comparison speed that underpins fast, accurate reading of instruments, codes and readbacks.
Loading exercise...
This measures perceptual speed: how quickly and accurately you compare two short symbol strings and decide whether they match or differ by a single character. It is the raw visual-comparison rate behind fast, error-free reading of instruments, codes and readbacks, with no searching or lookup step to slow it down.
For longer strings, do not read left to right like a word. Break each string into two or three chunks and compare the matching chunks between the rows. A single altered character breaks the pattern of its chunk, which your eye catches faster than a character-by-character read.
In our testing, a strong run keeps accuracy high while still clearing a good volume of pairs, rather than racing and stacking up wrong calls. As a rough guide, build accuracy first at a comfortable pace, then push the speed until accuracy just begins to slip, and hold there.
The HUD shows a target seconds-per-item for your level and your live pace beside it. Real perceptual-speed batteries are set to a brisk rhythm, roughly one to two seconds per item, so the target is there to calibrate against. Use it as a metronome, not a whip: if hitting the target is costing you accuracy, hold a touch slower.
Aptitude tests get you through selection. The EASA ATPL theory exams come next, and SkyStudy is built for that phase.
SkyStudy is built for EASA ATPL exam preparation, with an ATPL question bank, timed mock exams, spaced repetition and analytics across every subject. Free to start, no card needed.