# 图片转压 vs 航记

The clearest difference is in-app purchases: 图片转压 at none against 航记's 4. 图片转压 also leads on iOS requirement (12.0 vs 17.0). 航记's advantage is update cadence (every 4 days vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. 航记 sells 4 in-app purchases, starting at $0.99 per month. 图片转压 asks for nothing beyond the download.

图片转压 ships an update every 12 months, 航记 every 4 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 图片转压 | 航记 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 83 MB | 96 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [静 胡](https://appshunter.io/developer/1687913013) | [Beijing Jitrace Technology Co., Ltd.](https://appshunter.io/developer/6786274445) |

## What reviewers say

### 图片转压

[App page](https://appshunter.io/ios/app/id6479608625)

**Features:** macOS Compatibility

**In-app purchases:** none


### 航记

[App page](https://appshunter.io/ios/app/id6786274443)

This app helps aviation professionals and enthusiasts manage flight schedules, duty periods, and flight memories. It offers tools for calculating duty times, handling time zone differences, and recording flight experiences with text, photos, and voice notes. The app also tracks flight history and provides reminders for important dates.

**Highlights:** Duty period calculation with compliance reminders, Time calculator for flight duration and time zones, Flight logbook with text, photo, and voice recording, Countdown and reminders for important dates, Flight map and travel footprint tracking, Flight and schedule recording, Apple ecosystem integration (Watch, widgets, iCloud)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 高级会员月付 | $0.99 | per month |
| 高级会员季付 | $0.99 | per 3 months |
| 高级会员年付 | $4.99 | per year |
| 高级会员永久 | $12.99 | one-time |


## Frequently asked questions

### Is 图片转压 free?

图片转压 is free to download, with no in-app purchases.

### Is 航记 free?

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

### Do 图片转压 or 航记 have ads?

Neither 图片转压 nor 航记 shows ads.

### Which is updated more often, 图片转压 or 航记?

图片转压 ships an update every 12 months, and 航记 every 4 days. Most recently, 图片转压 was updated on October 15, 2026 and 航记 on October 24, 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.*