# CR209 — Help you understand TBM

> Help you understand TBM (iPhone/iPad app by 开剑 张.)

- Source: https://appshunter.io/ios/app/cr209/id6747422565 (this page in markdown: same URL + `.md`)
- Developer: [开剑 张](https://appshunter.io/developer/1525060141)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 992 MB
- Languages: American English
- Released: 2025-07-20
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/cr209/id6747422565/reviews.md

## What is CR209?

Help you understand the working principle of the slurry shield machine


## Version history (last 1 release)

### 1.4 — 2025-07-20

No release notes.

## Related topics

[cr209](https://appshunter.io/ios/topics/cr209)

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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 2026-05-19.*