# senstracking vs PDF Compressor

The clearest difference is rating: PDF Compressor at 5.0 against senstracking's 4.0. PDF Compressor also leads on update cadence (every 3 days vs every 7 months). senstracking's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 18.0). On price, ratings volume, ads 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. senstracking asks for nothing beyond the download.

PDF Compressor holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

senstracking ships an update every 7 months, PDF Compressor every 3 days. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | senstracking | PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/senstracking/id1450243734/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-compressor-size-compress/id6799160505/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 24 MB | 26 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sayme Wireless Sensor Network](https://appshunter.io/developer/1328360065) | [TechCreative Lab LLC](https://appshunter.io/developer/6799160509) |

## What reviewers say

### senstracking

[App page](https://appshunter.io/ios/app/senstracking/id1450243734)

This app provides real-time location tracking for people and assets within a defined area using IEEE 802.15.4 frames. It allows for automatic location of individuals and assets, with the ability to remotely signal specific items. This helps reduce search times in bounded environments.

**Highlights:** Automatic location of people and assets, Real-time positional data, Remote asset signaling, Reduced search times, IEEE 802.15.4 frame transmission

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-size-compress/id6799160505)

Easily reduce the size of PDF files by up to 90% without sacrificing quality. This tool offers multiple compression levels and batch processing, making it ideal for emailing documents, saving storage, and meeting upload size limits.

**Highlights:** Compress PDFs up to 90%, 6 compression levels, Batch compression, Organize with folders, Secure file processing, Manage and preview files

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $1.99 | per 7 days |
| Month | $6.99 | per month |
| Year | $29.99 | per year |


## Frequently asked questions

### Is senstracking free?

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

### Is PDF Compressor free?

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

### Which has better reviews, senstracking or PDF Compressor?

PDF Compressor is rated higher. senstracking averages 4.0 out of 5 from 1 ratings, while PDF Compressor averages 5.0 from 1 ratings.

### Do senstracking or PDF Compressor have ads?

Neither senstracking nor PDF Compressor shows ads.

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

senstracking ships an update every 7 months, and PDF Compressor every 3 days. Most recently, senstracking was updated on October 5, 2026 and PDF Compressor on October 6, 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.*