# CDA vs 学掌门

The clearest difference is iOS requirement: CDA at 11.0 against 学掌门's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CDA sells 6 one-off in-app purchases and 学掌门 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

CDA ships an update monthly, 学掌门 every 5 weeks. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | CDA | 学掌门 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/cda/id1069225260/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 198 MB | 128 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Guofuruhe Networking Technology Co., Ltd](https://appshunter.io/developer/547894322) | [Shanghai Boweifeng Software Technology Co.,Ltd.](https://appshunter.io/developer/1483561307) |

## What reviewers say

### CDA

[App page](https://appshunter.io/ios/app/cda/id1069225260)

This app provides a comprehensive learning platform for aspiring data analysts. It offers official study materials, practice questions, expert interviews, and video courses to help users prepare for and pass the CDA certification exam. Join a community of learners to share insights and track your progress.

**Highlights:** Official CDA study materials, Extensive question bank with practice modes, Expert interviews and insights, Video lectures and courses, Exam news and updates, Community forums for learners

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6 coin | $0.99 | one-time |
| 18 coin | $2.99 | one-time |
| 68 coin | $9.99 | one-time |
| 128 coin | $19.99 | one-time |
| 268 coin | $41.99 | one-time |
| 618 coin | $94.99 | one-time |


### 学掌门

[App page](https://appshunter.io/ios/app/id1483561308)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AtStudy网校商务版一180天套餐 | $23.99 | one-time |
| AtStudy网校商务版二180天套餐 | $29.99 | one-time |
| AtStudy网校商务版三180天套餐 | $41.99 | one-time |
| AtStudy网校商务版四180天套餐 | $46.99 | one-time |
| AtStudy网校商务版五180天套餐 | $59.99 | one-time |
| AtStudy网校高级版一180天套餐 | $74.99 | one-time |
| AtStudy网校高级版二180天套餐 | $94.99 | one-time |
| AtStudy网校高级版三180天套餐 | $149.99 | one-time |
| AtStudy网校高级版四180天套餐 | $169.99 | one-time |
| AtStudy网校高级版五180天套餐 | $199.99 | one-time |


## Frequently asked questions

### Is CDA free?

CDA is free to download, with in-app purchases available.

### Is 学掌门 free?

学掌门 is free to download, with in-app purchases available.

### Do CDA or 学掌门 have ads?

Neither CDA nor 学掌门 shows ads.

### Which is updated more often, CDA or 学掌门?

CDA ships an update monthly, and 学掌门 every 5 weeks. Most recently, CDA was updated on October 2, 2026 and 学掌门 on September 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*