# iKey Lock vs Sound Meter Plus

The clearest difference is price: iKey Lock at Free against Sound Meter Plus's $2.99. iKey Lock also leads on update cadence (every 4 months vs every 39 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

iKey Lock is free to download; Sound Meter Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iKey Lock ships an update every 4 months, Sound Meter Plus every 39 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | iKey Lock | Sound Meter Plus |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/ikey-lock/id1576484136/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 39 months |
| Monetization | Free | — |
| Size | 118 MB | 10 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sunion Technology Co., Ltd.](https://appshunter.io/developer/1495295999) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### iKey Lock

[App page](https://appshunter.io/ios/app/ikey-lock/id1576484136)

Control and configure your Bluetooth Smart Lock directly from your smartphone. Easily share access with others and manage your lock's settings. Ensure Bluetooth is enabled on your device for seamless operation.

**Highlights:** Operate Bluetooth Smart Lock, Setup lock configurations, Share lock access, Manage lock settings, Requires Bluetooth

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound Meter Plus

[App page](https://appshunter.io/ios/app/sound-meter-plus/id1612179628)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iKey Lock free?

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

### Is Sound Meter Plus free?

Sound Meter Plus costs $2.99, with no in-app purchases.

### Do iKey Lock or Sound Meter Plus have ads?

Neither iKey Lock nor Sound Meter Plus shows ads.

### Which is updated more often, iKey Lock or Sound Meter Plus?

iKey Lock ships an update every 4 months, and Sound Meter Plus every 39 months. Most recently, iKey Lock was updated on October 7, 2026 and Sound Meter Plus on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*