# Sentry Smartlock Plus vs Speed Tracker Pro GPS

The clearest difference is review sentiment: Speed Tracker Pro GPS at 100% against Sentry Smartlock Plus's 0%. Speed Tracker Pro GPS also leads on update cadence (every 9 days vs every 12 months). Sentry Smartlock Plus's advantage is price (Free vs $2.99) and iOS requirement (13.0 vs 18.5). On ads, in-app purchases and device support there is nothing between them.

Sentry Smartlock Plus is free to download; Speed Tracker Pro GPS costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sentry Smartlock Plus ships an update every 12 months, Speed Tracker Pro GPS every 9 days. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sentry Smartlock Plus | Speed Tracker Pro GPS |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/sentry-smartlock-plus/id1555979016/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 9 days** |
| Monetization | **Free** | Paid |
| Size | 319 MB | 2 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Limson Marketing Inc.](https://appshunter.io/developer/1555979018) | [Tobias Lorenz Haubold](https://appshunter.io/developer/1886171635) |

## What reviewers say

### Sentry Smartlock Plus

[App page](https://appshunter.io/ios/app/sentry-smartlock-plus/id1555979016)

Control and access your smart lock using Bluetooth. Enjoy keyless convenience and configure your lock settings directly from your device.

**Highlights:** Keyless convenience, Bluetooth access, Smart lock configuration, Device access

**Features:** macOS Compatibility

**In-app purchases:** none


### Speed Tracker Pro GPS

[App page](https://appshunter.io/ios/app/speed-tracker-pro-gps/id6760775075)

This app provides a precise GPS speedometer with a clear display and background tracking. It records detailed trip statistics, offers speed limit warnings with haptic feedback, and supports Siri shortcuts for hands-free operation.

**Highlights:** Large, easy-to-read speed display, Reliable background trip recording, Detailed trip statistics and history, Customizable speed limit warnings, Siri Shortcuts integration

**In-app purchases:** none


## Frequently asked questions

### Is Sentry Smartlock Plus free?

Sentry Smartlock Plus is free to download, with no in-app purchases.

### Is Speed Tracker Pro GPS free?

Speed Tracker Pro GPS costs $2.99, with no in-app purchases.

### Do Sentry Smartlock Plus or Speed Tracker Pro GPS have ads?

Neither Sentry Smartlock Plus nor Speed Tracker Pro GPS shows ads.

### Which is updated more often, Sentry Smartlock Plus or Speed Tracker Pro GPS?

Sentry Smartlock Plus ships an update every 12 months, and Speed Tracker Pro GPS every 9 days. Most recently, Sentry Smartlock Plus was updated on October 5, 2026 and Speed Tracker Pro GPS on October 11, 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.*