
BrainDojo Free vs Plus: Which Plan Is Right for You?
An honest comparison of BrainDojo Free and Plus: what each plan includes, who each one suits, why the app is ad-free, and how to decide when to upgrade.
StudyX
The development log of StudyX: app updates, how-to guides, and notes from building mobile software for life.

An honest comparison of BrainDojo Free and Plus: what each plan includes, who each one suits, why the app is ad-free, and how to decide when to upgrade.

Learn what the Brain Meter in BrainDojo shows, how completing multiple training sessions daily raises it, and how to use it as your daily training goal.

New to BrainDojo? Learn how to download the app, start with Today's Training and Try for free, and build a 10-second daily brain-training habit that lasts.

Who gets the most out of Sudoku365? Daily-habit puzzle lovers, beginners through experts, offline commuters, and anyone motivated by streaks and stats.

Practical Sudoku365 tips: solve at a set time daily to protect your streak, climb difficulty levels gradually, and see progress in stats and best times.

The thinking behind Sudoku365, our daily sudoku app: a calm daily thinking ritual, clean distraction-free design, and puzzles that work offline anywhere.

New to Sudoku365? Learn what the daily sudoku app offers, how to pick from four difficulty levels, build a daily puzzle habit, and use hints without guilt.

StudyX Japanese Letters TableEssay
Who StudyX Japanese Letters Table is for: toddlers meeting kana for the first time, bilingual families abroad, and beginners starting to learn Japanese.

StudyX Japanese Letters TableHow-To
Practical ideas for StudyX Japanese Letters Table: daily chart exploration, listening-quiz games together, moving from chart to tracing, and romaji mode.

StudyX Japanese Letters TableEssay
Why we built StudyX Japanese Letters Table: turning the classic Japanese kana chart into a playful, kid-safe app with native audio for every letter.