# PMI vs WCY DisLab

The clearest difference is in-app purchases: WCY DisLab at none against PMI's 3. PMI's advantage is update cadence (every 2 months vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PMI sells 3 in-app purchases, starting at $7.99 per month. WCY DisLab asks for nothing beyond the download.

PMI ships an update every 2 months, WCY DisLab every 6 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PMI | WCY DisLab |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Subscription | — |
| Size | 94 MB | 20 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Duy Khanh](https://appshunter.io/developer/1345775745) | [Beijing Weichengya Laboratory Equipment Co., Ltd](https://appshunter.io/developer/1829615361) |

## What reviewers say

### PMI

[App page](https://appshunter.io/ios/app/pmi-pba-exam-simulator/id6468379040)

Prepare for your PMI-PBA certification with practice tests and mock exams. Track your progress, review detailed explanations, and access an extensive question bank curated by experts. This tool helps you validate foundational knowledge and increase your chances of passing the exam.

**Highlights:** Practice tests covering various knowledge domains, Progress tracking and performance summaries, Detailed explanations for questions and answers, Full mock exams with timed interface, Extensive question bank, Expert-curated content

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $7.99 | per month |
| Premium Quarterly | $14.99 | per 3 months |
| Premium Yearly | $49.99 | per year |


### WCY DisLab

[App page](https://appshunter.io/ios/app/wcy-dislab/id6749256060)

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

**In-app purchases:** none


## Frequently asked questions

### Is PMI free?

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

### Is WCY DisLab free?

WCY DisLab is free to download, with no in-app purchases.

### Do PMI or WCY DisLab have ads?

Neither PMI nor WCY DisLab shows ads.

### Which is updated more often, PMI or WCY DisLab?

PMI ships an update every 2 months, and WCY DisLab every 6 months. Most recently, PMI was updated on November 7, 2026 and WCY DisLab on October 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.*