# SMS Alert vs ledshowtw

The clearest difference is update cadence: ledshowtw at every 6 weeks against SMS Alert's every 14 months. 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.

SMS Alert ships an update every 14 months, ledshowtw every 6 weeks. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | SMS Alert | ledshowtw |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sms-alert/id1100172188/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 7 MB | 129 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [朝山 马](https://appshunter.io/developer/596304901) | [onbon](https://appshunter.io/developer/1456209473) |

## What reviewers say

### SMS Alert

[App page](https://appshunter.io/ios/app/sms-alert/id1100172188)

This app monitors temperature, humidity, analog signals, and power status for various devices. It sends alerts via SMS and phone calls when predefined limits are reached. Users can also query device status via text and schedule periodic reports.

**Highlights:** Temperature and humidity monitoring, Analog signal monitoring (4-20mA, 0-5V), Power monitoring (single/three-phase), SMS and phone call alerts, Remote status query via text, Scheduled status reporting, Modbus RTU/TCP cloud platform support

**Features:** macOS Compatibility

**In-app purchases:** none


### ledshowtw

[App page](https://appshunter.io/ios/app/ledshowtw/id1456209474)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SMS Alert free?

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

### Is ledshowtw free?

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

### Do SMS Alert or ledshowtw have ads?

Neither SMS Alert nor ledshowtw shows ads.

### Which is updated more often, SMS Alert or ledshowtw?

SMS Alert ships an update every 14 months, and ledshowtw every 6 weeks. Most recently, SMS Alert was updated on October 22, 2026 and ledshowtw on October 26, 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.*