# Tracking Device Detector vs Foundation Squaring Calculator

The clearest difference is price: Tracking Device Detector at Free against Foundation Squaring Calculator's $4.99. Foundation Squaring Calculator's advantage is in-app purchases (none vs 2) and update cadence (weekly vs every 3 weeks). On ads and iOS requirement there is nothing between them.

Tracking Device Detector is free to download; Foundation Squaring Calculator costs $4.99 up front. Tracking Device Detector sells 2 in-app purchases, starting at $9.99 per 7 days. Foundation Squaring Calculator asks for nothing beyond the download.

Tracking Device Detector ships an update every 3 weeks, Foundation Squaring Calculator weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Tracking Device Detector | Foundation Squaring Calculator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.8 (341 ratings)](https://appshunter.io/ios/app/tracking-device-detector-ble/id6748611590/reviews)** | — |
| Number of ratings | **341** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 37 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Samuel Ippisch](https://appshunter.io/developer/1766642673) | [Alexander Riggs](https://appshunter.io/developer/6791232535) |

## What reviewers say

### Tracking Device Detector

[App page](https://appshunter.io/ios/app/tracking-device-detector-ble/id6748611590)

Discover hidden Bluetooth devices that may be tracking your location. This app scans for unknown signals, identifies risks, and helps you locate them using real-time signal strength. Stay informed about unwanted Bluetooth monitoring to protect your privacy and security.

**Highlights:** Scan for unknown Bluetooth signals, Identify potential tracking devices, Locate devices with signal strength, Real-time proximity alerts, Distance estimation, Privacy and security protection

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $9.99 | per 7 days |
| Yearly Pro / 1 Week Free Trial | $39.99 | per year |


### Foundation Squaring Calculator

[App page](https://appshunter.io/ios/app/foundation-squaring-calculator/id6795545710)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tracking Device Detector free?

Tracking Device Detector is free to download, with in-app purchases available.

### Is Foundation Squaring Calculator free?

Foundation Squaring Calculator costs $4.99, with no in-app purchases.

### Do Tracking Device Detector or Foundation Squaring Calculator have ads?

Neither Tracking Device Detector nor Foundation Squaring Calculator shows ads.

### Which is updated more often, Tracking Device Detector or Foundation Squaring Calculator?

Tracking Device Detector ships an update every 3 weeks, and Foundation Squaring Calculator weekly. Most recently, Tracking Device Detector was updated on October 28, 2026 and Foundation Squaring Calculator 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.*