# 旅行日记 vs A320发动机操作模拟

The clearest difference is price: 旅行日记 at Free against A320发动机操作模拟's $29.99. 旅行日记 also leads on iOS requirement (11.0 vs 16.0). A320发动机操作模拟's advantage is update cadence (every 3 days vs every 7 months). On ads, in-app purchases and device support there is nothing between them.

旅行日记 is free to download; A320发动机操作模拟 costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

旅行日记 ships an update every 7 months, A320发动机操作模拟 every 3 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 旅行日记 | A320发动机操作模拟 |
| --- | --- | --- |
| Price | **Free** | $29.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | — | Paid |
| Size | 59 MB | 8 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lei Sin Sun](https://appshunter.io/developer/1642858673) | [广州视帧云途科技有限公司](https://appshunter.io/developer/1873314637) |

## What reviewers say

### 旅行日记

[App page](https://appshunter.io/ios/app/id6445844417)

**Features:** macOS Compatibility

**In-app purchases:** none


### A320发动机操作模拟

[App page](https://appshunter.io/ios/app/a320/id6812829370)

An interactive tool for learning and demonstrating aircraft engine procedures. Explore four engine configurations, independently control dual engines, and observe system responses through dynamic parameters and schematics. Practice fire handling scenarios and analyze operational principles.

**Highlights:** Four engine configurations, Independent dual engine control, Dynamic parameters and schematics, Operation logging and analysis, Fire handling drills, Mobile and tablet adaptation

**In-app purchases:** none


## Frequently asked questions

### Is 旅行日记 free?

旅行日记 is free to download, with no in-app purchases.

### Is A320发动机操作模拟 free?

A320发动机操作模拟 costs $29.99, with no in-app purchases.

### Do 旅行日记 or A320发动机操作模拟 have ads?

Neither 旅行日记 nor A320发动机操作模拟 shows ads.

### Which is updated more often, 旅行日记 or A320发动机操作模拟?

旅行日记 ships an update every 7 months, and A320发动机操作模拟 every 3 days. Most recently, 旅行日记 was updated on October 3, 2026 and A320发动机操作模拟 on October 7, 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.*