// blog
From the Estwoco team
Notes on the apps we build and maintain across the estwoco.com network — how they work, why we designed them the way we did, and how to get the most out of them.
Why our IQ Test uses 16 questions — not 60
A look at the reasoning behind a short, focused test: how question count relates to accuracy, attention span, and completion rates, and what we did to keep the test both fast and meaningful.
Understanding IQ score distribution: what your score band really means
A plain-English explanation of the bell curve, percentiles, and how to read the score band you get at the end of our test.
Pattern recognition vs. numerical reasoning: what's the difference?
Two core reasoning skills our test measures, how they differ, and why your performance can vary between them.
Five practical ways to get better at logic and reasoning puzzles
Evidence-informed habits that actually move the needle on pattern and logic puzzle performance.
SpotDiff: how a simple spot-the-difference game supports cognitive fitness
Why visual comparison games like SpotDiff are more than a pastime — the cognitive skills involved, the research behind attention training, and how we designed the app around them.
The psychology of attention: why your eyes miss the obvious
Change blindness, inattentional blindness, and why spot-the-difference puzzles are genuinely harder than they look.
Training visual memory: five simple daily habits
Small, no-equipment habits that build the same visual memory skills SpotDiff exercises.
Why puzzle games make a good mental break between focused work
Why a bounded visual puzzle beats passive scrolling as a genuine attention reset.
Typing Sinhala without a Sinhala keyboard: how Sinhalata works
An inside look at Sinhalata, our free Windows app that converts Singlish (Sinhala written in Latin letters) into proper Sinhala script as you type.
A short history of typing Sinhala on computers
From early font-substitution hacks to true Unicode support — and why that shift made tools like Sinhalata possible.
Unicode Sinhala vs. legacy fonts: why it matters for compatibility
The real difference between true Unicode Sinhala text and older font-substitution tricks, and why it affects search, sharing, and accessibility.
Singlish spelling patterns: how the converter handles ambiguity
Why phonetic Singlish spelling is inherently ambiguous, and how Sinhalata resolves it into accurate Sinhala script.