Guides and lists
Learn
Plain explanations of perception training — what the words mean, what the evidence supports, and which apps are worth your time. Written by the people who make Percore, dated, and honest about where Percore is not the right tool.
Best of 2026
Ranked lists, each entry described from its own listing and checked on the date shown. Percore appears where it belongs and is left out of the needs it does not serve.
The best perception training apps in 2026
Eight perception training apps and tests compared for 2026: which senses each measures, what it costs, where it stops, and how to tell it from brain games.
The best ear training apps in 2026
Six ear training apps compared for 2026 — relative pitch, intervals, chords, rhythm and pitch memory — with what each is best for and where it falls short.
The best colour perception tests and colour training apps in 2026
Eight colour perception tests and colour training apps for 2026 — hue arrangement, matching and memory — with what each measures and where it falls short.
The best rhythm training apps in 2026
Seven rhythm training apps compared for 2026 — rhythm reading, tap-back drills, training metronomes and timing measurement — with what each is best for.
The best reaction time tests and training apps in 2026
Seven reaction time tests and apps for 2026, what the millisecond number includes, what practice can change, and how to measure yourself fairly.
The best spatial reasoning and mental rotation apps in 2026
Seven spatial reasoning and mental rotation apps compared for 2026: puzzles, 3D tools, brain-training suites and measured reproduction, and which to pick.
The best Lumosity alternatives in 2026
Eight Lumosity alternatives for 2026: BrainHQ, Peak, Elevate, NeuroNation, Impulse and three different kinds of alternative, with prices and limits.
The best games and apps to train a designer's eye in 2026
Nine free and nearly free games and apps that sharpen a designer's eye in 2026 — kerning, Bézier curves, letterforms, colour, spacing and space.
Guides
What the words mean, what the research supports, and how to practise.
What is perception training?
Perception training is practising a sensory judgement with feedback: colour, pitch, duration, space. What it is, what it is not, and what the research supports.
How to train your senses: a two-minute daily method
A daily two-minute method for training vision, hearing, timing and spatial judgement, with a no-app exercise for each and the mistakes to avoid.
Perception training vs brain training: what is the difference, and does either work?
Brain training promises a better memory; the evidence says it improves the games. Perception training claims only the measured sense moves. Which is which.
What is perceptual learning? The research behind training a sense
Perceptual learning is the lasting improvement in a sensory task that comes from practice. What the research shows about specificity, feedback and sleep.
How to improve your colour perception
What colour perception training can change (discrimination, colour memory) and what it cannot (your cones), with a working method for designers and colourists.
Hue, saturation and brightness, explained
What hue, saturation and brightness mean, why hue is an angle, how HSB compares with HSL, RGB and Lab, and why three sliders show which judgement slipped.
How to improve pitch recognition
Relative pitch, perfect pitch and pitch memory are three different skills. Which ones adults can train, the methods that work, and how to measure progress.
What is a cent in music?
A cent is a hundredth of a semitone, 1,200 to the octave. Why pitch is measured logarithmically, why a Hertz error misleads, and how far off the ear can hear.
How to improve your sense of time
Your sense of duration is a measurable skill. What interval timing is, why error grows with the interval, why counting is a workaround, and how to practise it.
How to improve spatial awareness
Spatial awareness is judging position, distance, angle and motion. What research says is trainable, six exercises that work, and how to measure the change.
How to train your peripheral vision
What peripheral vision is, what training changes (what you notice at the edge of sight) and cannot (your measured field), the exercises, and the apps.
About Percore
The complete account of the product, and how every score is computed.
What is Percore? The daily perception practice, explained in full
Percore is a free iPhone app: a two-minute daily practice for colour, pitch, duration and shape. Every feature, module, price and scoring rule, in one page.
How Percore scores each sense
The scoring behind every Percore session, in plain words: hue over 180°, cents for pitch, relative error for duration, 45/35/20 for shape, averages and drift.