# Kasa Smart vs Sound Alert.

The clearest difference is review sentiment: Kasa Smart at 82% against Sound Alert.'s 20%. Kasa Smart also leads on rating (4.8 vs 2.8) and ratings volume (81K vs 6). Sound Alert.'s advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Kasa Smart sells 8 in-app purchases, starting at $2.99 per month and Sound Alert. sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Kasa Smart holds the better App Store score, 4.8 against 2.8. That said, the two scores are not equally well evidenced: Kasa Smart has 81K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 82% of Kasa Smart's written reviews are positive against 20% of Sound Alert.'s.

Kasa Smart ships an update every 3 weeks, Sound Alert. every 2 months. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Kasa Smart | Sound Alert. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (81K ratings)](https://appshunter.io/ios/app/kasa-smart/id1034035493/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/sound-alert/id1126014754/reviews) |
| Number of ratings | **81K** | 6 |
| Positive reviews | **81.7% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#34** | — |
| Size | 617 MB | 70 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TP-Link Systems Inc.](https://appshunter.io/developer/1713842892) | [Innovation Factory Limited](https://appshunter.io/developer/915950101) |

## What reviewers say

### Kasa Smart

[App page](https://appshunter.io/ios/app/kasa-smart/id1034035493)

**Currently charting:** #34 Top Grossing · Lifestyle, #98 Top Free · Lifestyle (US App Store)

Control and manage your TP-LINK smart home devices from anywhere. Schedule appliances, set custom modes, and monitor your devices remotely. Offers cloud storage for security camera footage.

**Highlights:** Remote device control, Scheduling and automation, Away Mode for security, Cloud storage for cameras, Device configuration, Real-time monitoring

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kasa Care Plus 1 Cam/month | $2.99 | per month |
| Kasa Care Plus 2 Cam/month | $5.99 | per month |
| Kasa Care Plus 3 Cam/month | $8.99 | per month |
| Kasa Care Premium 10 Cam/month | $9.99 | per month |
| Kasa Care Plus 1 Cam/year | $29.99 | per year |
| Kasa Care Plus 2 Cam/year | $59.99 | per year |
| Kasa Care Plus 3 Cam/year | $89.99 | per year |
| Kasa Care Premium 10 Cam/year | $99.99 | per year |

**What reviewers like**

- 🚀 Easy setup and use
- 🔒 Reliable and secure
- 👍 Convenient remote control
- 👍 Helpful scheduling and automation features
- 👍 Integrates well with smart home ecosystems

**What reviewers complain about**

- 🐛 Connectivity issues and device disconnections
- 🐛 Slow app performance and responsiveness
- 🐛 Buggy updates causing functionality loss
- 🔒 Security concerns with unsecured WiFi connections
- 👎 Limited customization and control options

**Reported bugs**

- App getting stuck on terms of service page
- Devices disappearing from the app
- Schedules and automations not working as expected
- Inconsistent time and location settings

**Requested features**

- More flexible scheduling options (e.g. random on/off, sunrise/sunset offsets)
- Ability to share access and control with multiple users
- Improved energy monitoring and reporting
- Expanded compatibility with more smart home devices
- Easier device organization and grouping


### Sound Alert.

[App page](https://appshunter.io/ios/app/sound-alert/id1126014754)

This app uses your smartphone's microphone to detect important environmental sounds like alarms and doorbells. It alerts users through vibrations, camera flash, and on-screen notifications, offering peace of mind for those who are hard-of-hearing or heavy sleepers.

**Highlights:** Records and detects environmental sounds, Alerts for doorbells, smoke alarms, and more, Vibrates smartphone and connected watches, Flashes mobile camera light for alerts, Displays event icons and text notifications, Connects with Pebble Watch

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sound Alert Full version | $35.99 | one-time |


## Frequently asked questions

### Is Kasa Smart free?

Kasa Smart is free to download, with in-app purchases available.

### Is Sound Alert. free?

Sound Alert. is free to download, with in-app purchases available.

### Which has better reviews, Kasa Smart or Sound Alert.?

Kasa Smart is rated higher. Kasa Smart averages 4.8 out of 5 from 81K ratings, while Sound Alert. averages 2.8 from 6 ratings.

### Do Kasa Smart or Sound Alert. have ads?

Neither Kasa Smart nor Sound Alert. shows ads.

### Which is updated more often, Kasa Smart or Sound Alert.?

Kasa Smart ships an update every 3 weeks, and Sound Alert. every 2 months. Most recently, Kasa Smart was updated on November 3, 2026 and Sound Alert. on October 24, 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.*