# Otterlocks vs Tracking Device Detector

The clearest difference is in-app purchases: Otterlocks at none against Tracking Device Detector's 3. Otterlocks also leads on ads (none vs shown) and rating (5.0 vs 4.7). Tracking Device Detector's advantage is ratings volume (120 vs 1) and update cadence (every 2 months vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Tracking Device Detector sells 3 in-app purchases, starting at $7.99 per 7 days. Otterlocks asks for nothing beyond the download.

Otterlocks holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Tracking Device Detector has 120 ratings behind it against 1, so its average is the more settled of the two.

Otterlocks ships an update every 4 months, Tracking Device Detector every 2 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Otterlocks | Tracking Device Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/otterlocks-safe-sync/id6751594201/reviews)** | [4.7 (120 ratings)](https://appshunter.io/ios/app/tracking-device-detector-tdd/id6754978872/reviews) |
| Number of ratings | 1 | **120** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 45 MB | 20 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Otterlocks](https://appshunter.io/developer/1835934140) | [SEMA ORUC](https://appshunter.io/developer/1847153942) |

## What reviewers say

### Otterlocks

[App page](https://appshunter.io/ios/app/otterlocks-safe-sync/id6751594201)

This app provides real-time notifications for smart lock status changes, alerting authorized personnel to lockouts and clear events. It generates comprehensive reports detailing lockout timelines for all equipment.

**Highlights:** Real-time smart lock status notifications, Lockout alerts to authorized workers, All clear notifications, Lockout event reporting, Full lockout timelines, Equipment lockout tracking

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

**In-app purchases:** none


### Tracking Device Detector

[App page](https://appshunter.io/ios/app/tracking-device-detector-tdd/id6754978872)

Detect and locate nearby Bluetooth devices that may be tracking your location without consent. The app scans for active Bluetooth signals, identifies unknown or suspicious devices, and shows real-time signal strength to help you determine proximity. Stay aware and secure by identifying potential risks and taking control of your privacy.

**Highlights:** Scan for active Bluetooth devices, Detect unknown tracking devices, View signal strength and proximity, Real-time updates, Alerts for potential tracking activity, Privacy-focused interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $7.99 | per 7 days |
| Special Offer Yearly Access | $17.99 | per year |
| Yearly Access | $34.99 | per year |


## Frequently asked questions

### Is Otterlocks free?

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

### Is Tracking Device Detector free?

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

### Which has better reviews, Otterlocks or Tracking Device Detector?

Otterlocks is rated higher. Otterlocks averages 5.0 out of 5 from 1 ratings, while Tracking Device Detector averages 4.7 from 120 ratings.

### Do Otterlocks or Tracking Device Detector have ads?

Tracking Device Detector shows ads; Otterlocks does not.

### Which is updated more often, Otterlocks or Tracking Device Detector?

Otterlocks ships an update every 4 months, and Tracking Device Detector every 2 months. Most recently, Otterlocks was updated on October 7, 2026 and Tracking Device Detector on October 17, 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.*