# Centum: Movie Shadowing — Watch It 100 Times

> Watch It 100 Times (iPhone/iPad app by Beijing Zhidun Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/centum-movie-shadowing/id6797403060 (this page in markdown: same URL + `.md`)
- Developer: [Beijing Zhidun Technology Co., Ltd.](https://appshunter.io/developer/6794209235)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 4 MB
- Languages: English, French, German, Japanese, Korean, Chinese, Spanish, Chinese
- Released: 2026-08-19
- Data updated: 2026-09-17
- User reviews in markdown: https://appshunter.io/ios/app/centum-movie-shadowing/id6797403060/reviews.md

## What is Centum?

Every language app hands you more content. Centum hands you one.

Centum is a tool for a single method: pick one film you love, and watch it a
hundred times — until the lines live in your mouth instead of your notebook.

THE FIVE STAGES

1 · Watch it once with no subtitles at all. Just enjoy it. You'll miss most of
it, and that's the point.
2 · Watch it with subtitles in your own language. Now you know the story cold.
3 · Watch it with English subtitles. Sound starts snapping onto spelling.
4 · Go line by line. Loop a single sentence, say it out loud, record yourself,
compare. Stay on a line until it's yours.
5 · Then watch — or just listen — for the remaining laps. Screen off, on the
train, doing the dishes. This is where the fluency actually gets built.

WHAT THE APP DOES

· Sentence looping — tap any line to loop it, frame-accurate, no drift.
· Shadow recording — hear the original, say it, hear yourself back, both drawn
  side by side as waveforms.
· A lap count you can't fake — a lap only counts when the playhead really went
  through: 1.5x speed or slower, 90% of the film or more, no scrubbing your way
  to the end. Dragging the slider earns you nothing.
· A hundred squares — one per lap, shaded by the stage you were in. Watching
  your film fill up is the whole point of the thing.
· Bilingual subtitles aligned by timecode, not by line number — two subtitle
  files are almost never from the same release, and off-by-one alignment ruins
  everything.
· Background listening with lock screen controls. Stage five is mostly ears.
· Notes and per-sentence mastery, so you can see which lines still aren't yours.
· Eight languages: English, 简体中文, 繁體中文, 日本語, 한국어, Español,
  Français, Deutsch.

WHAT YOU NEED TO BRING

Centum ships with no films and no subtitles. It is a tool, not a library.
You bring:

· A video file in MP4 or MOV (H.264 or HEVC). MKV and AVI cannot be played on
  iOS — this is a system limitation, not a setting.
· A subtitle file (.srt or .ass). One in English, plus optionally one in your
  own language for stage two.

Without any subtitles you can still watch the film and count laps, but stages
two through four need them. Import your files through the Files app.

PRIVACY

No account. No sign-up. Nothing to log in to. Your films, your notes, your
recordings and your lap count live in this device's sandbox and go nowhere.
Delete the app and all of it is gone with it.

—
The method is 장동완's 100LS. The app is just the tool that makes it survivable.
Questions or ideas: business@zhidun-ai.com


## Version history (last 3 releases)

### 1.0.2 — 2026-09-14

Centum 1.0.2 — fixes for watching a film all the way to the end.

· After a film ends, the play button starts the next lap. Until now the player froze at the end, and reopening the app dropped you straight back at that dead end.
· Lap counting is trustworthy again. A finished lap could be counted a second time when you came back to the film. It can't any more.
· The screen stays awake while a film is playing.
· Playback speed and the audio track you picked carry over into the next lap.
· iPad: the sentence list fills the panel instead of a quarter of it.

### 1.0.1 — 2026-08-24

Fixes an issue on iPad where choosing a film to import did nothing.

### 1.0 — 2026-08-19

No release notes.

## More apps by Beijing Zhidun Technology Co., Ltd.

- [汇缘 - 家谱族谱、亲戚称呼计算器](https://appshunter.io/ios/app/id6794209233)
- [Arbor 语法树](https://appshunter.io/ios/app/arbor/id6805091580)

All apps by Beijing Zhidun Technology Co., Ltd.: https://appshunter.io/developer/6794209235

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-17.*