# 生物记 vs AWS Certified Developer DVAC02

The clearest difference is in-app purchases: 生物记 at none against AWS Certified Developer DVAC02's 2. AWS Certified Developer DVAC02's advantage is iOS requirement (10.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AWS Certified Developer DVAC02 sells 2 one-off in-app purchases. 生物记 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 13, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | 生物记 | AWS Certified Developer DVAC02 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/aws-certified-developer-dvac02/id1562160188/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 94 MB | 25 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京微普科创科技有限公司](https://appshunter.io/developer/1073525273) | [Trieu Tran](https://appshunter.io/developer/1395838483) |

## What reviewers say

### 生物记

[App page](https://appshunter.io/ios/app/id1468297340)

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

**In-app purchases:** none


### AWS Certified Developer DVAC02

[App page](https://appshunter.io/ios/app/aws-certified-developer-dvac02/id1562160188)

Prepare for your AWS Certified Developer exam with practice questions updated monthly. This app offers exam simulation, detailed explanations for correct and incorrect answers, and the ability to save difficult questions for offline study.

**Highlights:** Monthly updated questions for 2025, Two exact-filtering features, Save difficult questions offline, Examination mode for realistic testing, Straightforward explanations for answers

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Premium Content | $7.99 | one-time |
| Unlock complete App | $9.99 | one-time |


## Frequently asked questions

### Is 生物记 free?

生物记 is free to download, with no in-app purchases.

### Is AWS Certified Developer DVAC02 free?

AWS Certified Developer DVAC02 is free to download, with in-app purchases available.

### Do 生物记 or AWS Certified Developer DVAC02 have ads?

Neither 生物记 nor AWS Certified Developer DVAC02 shows ads.

### Which is updated more often, 生物记 or AWS Certified Developer DVAC02?

生物记 ships an update every 3 months, and AWS Certified Developer DVAC02 every 3 months. Most recently, 生物记 was updated on September 13, 2026 and AWS Certified Developer DVAC02 on June 7, 2026.

---

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