# AlienWheel vs PDF Compressor

The clearest difference is review sentiment: PDF Compressor at 100% against AlienWheel's 0%. PDF Compressor also leads on update cadence (every 2 weeks vs every 36 months). AlienWheel's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. PDF Compressor sells 3 in-app purchases, starting at $1.99 per 7 days. AlienWheel asks for nothing beyond the download.

AlienWheel ships an update every 36 months, PDF Compressor every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AlienWheel | PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/alienwheel/id1532162097/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 36 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 33 MB | 29 MB |
| Requires iOS | **11.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lebi Computer Technology Co. Ltd.](https://appshunter.io/developer/1004823999) | [Etienne Pers](https://appshunter.io/developer/1872476582) |

## What reviewers say

### AlienWheel

[App page](https://appshunter.io/ios/app/alienwheel/id1532162097)

This application connects to a smart electric scooter via Bluetooth to display detailed vehicle information and adjust settings. It also supports firmware upgrades for the scooter.

**Highlights:** Bluetooth connectivity, View scooter details, Set vehicle parameters, Firmware upgrades

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-convert-photo/id6759563854)

This utility app helps reduce the file size of PDFs, photos, and images. It allows you to compress files for faster uploads, smaller email attachments, and more storage space. You can also merge multiple files into a single PDF.

**Highlights:** Compress PDFs, Compress photos and images, Merge multiple files into one PDF, Adjust compression and quality levels, Preview and share compressed files, Process files locally on device

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Compressor Pro | $1.99 | per 7 days |
| PDF Compressor Pro | $19.99 | per year |
| PDF Compressor Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is AlienWheel free?

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

### Is PDF Compressor free?

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

### Do AlienWheel or PDF Compressor have ads?

PDF Compressor shows ads; AlienWheel does not.

### Which is updated more often, AlienWheel or PDF Compressor?

AlienWheel ships an update every 36 months, and PDF Compressor every 2 weeks. Most recently, AlienWheel was updated on November 3, 2026 and PDF Compressor 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.*