# 浙江CA互认 vs Blu Petroleum

The clearest difference is update cadence: Blu Petroleum at every 2 months against 浙江CA互认's every 7 months. 浙江CA互认's advantage is iOS requirement (9.2 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

浙江CA互认 ships an update every 7 months, Blu Petroleum every 2 months. The most recent releases landed on September 9, 2026 and May 31, 2026 respectively.

## The numbers

| Metric | 浙江CA互认 | Blu Petroleum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Size | 97 MB | 211 MB |
| Requires iOS | **9.2** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zhejiang public resources trading center](https://appshunter.io/developer/1583677802) | [William Stomp](https://appshunter.io/developer/1170051251) |

## What reviewers say

### 浙江CA互认

[App page](https://appshunter.io/ios/app/ca/id1583677800)

**In-app purchases:** none


### Blu Petroleum

[App page](https://appshunter.io/ios/app/blu-petroleum/id1614786778)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is 浙江CA互认 free?

浙江CA互认 is free to download, with no in-app purchases.

### Is Blu Petroleum free?

Blu Petroleum is free to download, with no in-app purchases.

### Do 浙江CA互认 or Blu Petroleum have ads?

Neither 浙江CA互认 nor Blu Petroleum shows ads.

### Which is updated more often, 浙江CA互认 or Blu Petroleum?

浙江CA互认 ships an update every 7 months, and Blu Petroleum every 2 months. Most recently, 浙江CA互认 was updated on September 9, 2026 and Blu Petroleum on May 31, 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.*