# Cluster2A — Cluster analysis tools

> Cluster analysis tools (iPhone/iPad app by Chu-Yi Chang.)

- Source: https://appshunter.io/ios/app/cluster2a/id1544599436 (this page in markdown: same URL + `.md`)
- Developer: [Chu-Yi Chang](https://appshunter.io/developer/943416679)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.2 · 9 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2020-12-13
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/cluster2a/id1544599436/reviews.md

## What is Cluster2A?

Machine learning has become a powerful tool, revolutionizing how industries operate. Unsupervised learning is a machine learning method that analyzes and discovers hidden patterns, structures, or relationships in unclassified or unlabeled data. It is widely used to improve customer experience, provide personalized recommendations, optimize operations, and drive innovation. K-means and DBSCAN are two commonly used unsupervised learning algorithms.

Common application scenarios:
Customer and market segmentation: Grouping customers based on their behavior, demographic characteristics, or purchase history for targeted marketing and personalized recommendations.
Retail analytics: Identifying "hotspot areas" in a store through cluster analysis of customer locations.

Cluster2A combines two machine learning algorithms, K-means and DBSCAN, to help users with small datasets take their first steps into the world of machine learning more easily and enjoyably.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| K-means Model | $1.99 | one-time |
| DBSCAN Model | $1.99 | one-time |



## Version history (last 5 releases)

### 26.0 — 2026-02-22

Bug fixes and improvements

### 3.5 — 2023-12-07

Bug fixes and improvements.

### 3.4 — 2023-11-30

Bug fixes and improvements.

### 3.3 — 2023-08-12

Bug fixes and improvements.

### 3.2.0 — 2023-03-18

Bug fixes and improvements.

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## More apps by Chu-Yi Chang

- [Career3A](https://appshunter.io/ios/app/career3a/id1522875092)
- [Allocation3M](https://appshunter.io/ios/app/allocation3m/id1531072277)
- [SalesTSK](https://appshunter.io/ios/app/salestsk/id1536305216)
- [Macro3M](https://appshunter.io/ios/app/macro3m/id1541475348)
- [RuleMining2A](https://appshunter.io/ios/app/rulemining2a/id6451235610)

All apps by Chu-Yi Chang: https://appshunter.io/developer/943416679

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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.*