# 波音737 MRG vs 佐安飞行3.0

The clearest difference is update cadence: 佐安飞行3.0 at monthly against 波音737 MRG's every 3 months. 佐安飞行3.0 also leads on iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 波音737 MRG sells 1 in-app purchase, starting at $1.49 per month and 佐安飞行3.0 sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

波音737 MRG ships an update every 3 months, 佐安飞行3.0 monthly. The most recent releases landed on September 26, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 波音737 MRG | 佐安飞行3.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/737-mrg/id572047192/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 93 MB | 36 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MCC (BV)](https://appshunter.io/developer/421126411) | [Sichuan Zuoan Education Consulting Co., Ltd.](https://appshunter.io/developer/1736703006) |

## What reviewers say

### 波音737 MRG

[App page](https://appshunter.io/ios/app/737-mrg/id572047192)

A professional reference for pilots flying the Boeing 737, offering comprehensive guidance on over 300 non-normal situations with detailed system annotations and practical advice. It includes extensive diagrams and schematics for ground and in-flight scenarios.

**Highlights:** Covers over 300 non-normal situations, System annotations and practical advice, Over 2200 diagrams, logic gates, and schematics, Includes all B737 versions (CL, NG, MAX), Available in English and Chinese, Regular content updates

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access to all versions and all updates | $1.49 | per month |


### 佐安飞行3.0

[App page](https://appshunter.io/ios/app/30/id6749174621)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6个航家币 | $0.99 | one-time |
| 38个航家币 | $4.99 | one-time |
| 68个航家币 | $9.99 | one-time |
| 98个航家币 | $14.99 | one-time |
| 128个航家币 | $19.99 | one-time |
| 198个航家币 | $29.99 | one-time |


## Frequently asked questions

### Is 波音737 MRG free?

波音737 MRG is free to download, with in-app purchases available.

### Is 佐安飞行3.0 free?

佐安飞行3.0 is free to download, with in-app purchases available.

### Do 波音737 MRG or 佐安飞行3.0 have ads?

Neither 波音737 MRG nor 佐安飞行3.0 shows ads.

### Which is updated more often, 波音737 MRG or 佐安飞行3.0?

波音737 MRG ships an update every 3 months, and 佐安飞行3.0 monthly. Most recently, 波音737 MRG was updated on September 26, 2026 and 佐安飞行3.0 on October 12, 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.*