# 愛孟奇邏輯思維 L1：啟航 vs PDFCrop

The clearest difference is in-app purchases: 愛孟奇邏輯思維 L1：啟航 at none against PDFCrop's 2. 愛孟奇邏輯思維 L1：啟航 also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.0). PDFCrop's advantage is update cadence (every 3 weeks vs every 4 months). On price and device support there is nothing between them.

Both are free to download. PDFCrop sells 2 one-off in-app purchases. 愛孟奇邏輯思維 L1：啟航 asks for nothing beyond the download.

愛孟奇邏輯思維 L1：啟航 ships an update every 4 months, PDFCrop every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 愛孟奇邏輯思維 L1：啟航 | PDFCrop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdfcrop-pdf-split-and-crop/id6758953356/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 407 MB | 10 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Over Paradigm Tech. Inc.](https://appshunter.io/developer/373739560) | [Dajiale](https://appshunter.io/developer/516546398) |

## What reviewers say

### 愛孟奇邏輯思維 L1：啟航

[App page](https://appshunter.io/ios/app/l1/id1438723201)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDFCrop

[App page](https://appshunter.io/ios/app/pdfcrop-pdf-split-and-crop/id6758953356)

Easily crop, rotate, and split PDF files directly on your device. Remove white margins, fix page orientation, and divide large documents into smaller ones. All processing is done locally for enhanced privacy.

**Highlights:** Smart PDF cropping, Rotate pages and fix orientation, Batch processing for multi-page documents, Split PDF files, Real-time preview, 100% on-device processing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Clean Export | $0.99 | one-time |
| Pro Plan | $9.99 | one-time |


## Frequently asked questions

### Is 愛孟奇邏輯思維 L1：啟航 free?

愛孟奇邏輯思維 L1：啟航 is free to download, with no in-app purchases.

### Is PDFCrop free?

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

### Do 愛孟奇邏輯思維 L1：啟航 or PDFCrop have ads?

PDFCrop shows ads; 愛孟奇邏輯思維 L1：啟航 does not.

### Which is updated more often, 愛孟奇邏輯思維 L1：啟航 or PDFCrop?

愛孟奇邏輯思維 L1：啟航 ships an update every 4 months, and PDFCrop every 3 weeks. Most recently, 愛孟奇邏輯思維 L1：啟航 was updated on November 2, 2026 and PDFCrop on October 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.*