Consistency · Simplicity · Growth

Simply. Steadily.

We grow by stacking small daily steps.

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What we build

Tools you reach for every day

Apps we use ourselves and refine as we go — so study and work stack up one square a day.

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todoworks-ko-en.pages.dev
Kkujun English — training setup screen
Live ko-en

Kkujun English

Listen, repeat, check. One lesson a day.

An English trainer taught in Korean. Design your English/Korean repetition order as a template, pick a category and lessons, and start training right away.

  • Repetition templates — e.g. “English ×3 → Korean → English ×2”, with rests
  • 5-step setup — template · category · lessons · sentence filter · start
  • Personal card decks and bookmarks for the sentences you miss
  • Memorized sentences collected separately so progress is visible
5
step setup
19
lessons / category
30
sentence packs
ListeningShadowingCard decksProgress
Start training
haru-hanjang · preview
Haru Hanjang — the ‘Daily writing drill’ lesson deck
Coming soon ko-en

Haru Hanjang · One page a day

Open the calendar — today’s page is waiting.

An English textbook that grows by date. Pick a day on the study calendar to open that day’s lesson deck and worksheets, then step through sentence by sentence.

  • Study calendar — tap a date to open that day’s material
  • Lesson decks — step through with Space or →, slide by slide
  • Daily writing drill — English sentences side by side with Korean
  • Worksheets — grammar · phrasal verbs · collocations · idioms
1
page a day
24
pages / deck
4
worksheet types
WritingGrammarPhrasal verbsCollocations
shadowcut-studio · internal
ShadowCut Studio — clip preview and subtitle script editor
Internal tool

ShadowCut Studio

Turn a drama scene into a shadowing clip.

Load a video and its SMI subtitles, pick the lines you want, and it cuts short clips with lead-in and tail room — ready for repeat-after-me practice. Source files stay read-only.

  • Click a line in the subtitle script to create a clip
  • Tune pre/post-roll and check it with a range preview
  • See every clip in the episode on one timeline
  • Batch rendering via a render queue — sources untouched
492
subtitle lines / ep.
3
clips made
23
min episode
ShadowingSMI subtitlesClip renderTimeline
youtube-manager · internal
YouTube Manager — grid of 26 channels
Internal tool

YouTube Manager

A workbench that stacks scattered video references in one place.

Register channels and videos from YouTube, TikTok, Instagram and X, organize them with tags and notes, save locally, compare in an A-B pool and move on to video creation.

  • Register channels and videos from four platforms, sorted by subscribers
  • Unified search across titles, channels, tags and notes — with pins
  • Download to a local folder to keep videos that can’t be streamed
  • Compare references in an A-B pool and summarize channels with AI
4
platforms
26
channels
23
pinned · latest
YouTubeTikTokInstagramX
Our values

How small steps add up

Consistency

You don’t have to fill it up every day. Even after an empty day, to keep filling it in — that’s real consistency.

Simplicity

We strip away the clutter and keep the essence, so you can focus on the one thing that matters today.

Growth

Some days you climb, some days you slip. Still, ending one step higher than yesterday is growth.