# Smart Lock vs SENTRY PRO

The clearest difference is update cadence: SENTRY PRO at every 5 days against Smart Lock's every 2 months. SENTRY PRO also leads on iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Smart Lock ships an update every 2 months, SENTRY PRO every 5 days. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Smart Lock | SENTRY PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/smart-lock-one-key-access/id1136587698/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 9 MB | 14 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hizima Technologies Co., Ltd](https://appshunter.io/developer/1680084643) | [Limson Marketing Inc.](https://appshunter.io/developer/1555979018) |

## What reviewers say

### Smart Lock

[App page](https://appshunter.io/ios/app/smart-lock-one-key-access/id1136587698)

This utility app works with a specific mechatronic lock and key system to manage access and track operations. It allows users to find smart keys, open authorized locks, apply for access tickets, and view operation logs. The app also facilitates lock management and provides navigation to stations.

**Highlights:** Search and connect to Smart Keys, Open authorized Smart Locks, Apply for and manage lock access tickets, View daily, weekly, and monthly operation logs, Manage lock authorizations and One Time Passwords, Initialize, reset, and bind locks, Navigate to station locations

**Features:** macOS Compatibility

**In-app purchases:** none


### SENTRY PRO

[App page](https://appshunter.io/ios/app/sentry-pro/id1641050180)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Lock free?

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

### Is SENTRY PRO free?

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

### Do Smart Lock or SENTRY PRO have ads?

Neither Smart Lock nor SENTRY PRO shows ads.

### Which is updated more often, Smart Lock or SENTRY PRO?

Smart Lock ships an update every 2 months, and SENTRY PRO every 5 days. Most recently, Smart Lock was updated on October 9, 2026 and SENTRY PRO on October 2, 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.*