# B11 Alarm vs AlarmSMS Controller

The clearest difference is in-app purchases: B11 Alarm at none against AlarmSMS Controller's 1. B11 Alarm also leads on iOS requirement (7.0 vs 16.0). AlarmSMS Controller's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. AlarmSMS Controller sells 1 one-off in-app purchase. B11 Alarm asks for nothing beyond the download.

B11 Alarm ships an update every 2 months, AlarmSMS Controller monthly. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | B11 Alarm | AlarmSMS Controller |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 84 MB | 52 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chuango Security Technology Corporation](https://appshunter.io/developer/534068551) | [George Alexandrou](https://appshunter.io/developer/1875566334) |

## What reviewers say

### B11 Alarm

[App page](https://appshunter.io/ios/app/b11-alarm/id830083035)

This app allows you to remotely control a dual-network alarm system for your home. It enables arming/disarming, receiving alerts, and even listening in on your property via your smartphone.

**Highlights:** Remote arm/disarm, Receive intrusion alerts, Voice memo and listening in, Dual-network security (GSM/PSTN), Multiple user control, Smartphone app commands

**In-app purchases:** none


### AlarmSMS Controller

[App page](https://appshunter.io/ios/app/alarmsms-controller/id6773087060)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AlarmSMS Pro | $4.99 | one-time |


## Frequently asked questions

### Is B11 Alarm free?

B11 Alarm is free to download, with no in-app purchases.

### Is AlarmSMS Controller free?

AlarmSMS Controller is free to download, with in-app purchases available.

### Do B11 Alarm or AlarmSMS Controller have ads?

Neither B11 Alarm nor AlarmSMS Controller shows ads.

### Which is updated more often, B11 Alarm or AlarmSMS Controller?

B11 Alarm ships an update every 2 months, and AlarmSMS Controller monthly. Most recently, B11 Alarm was updated on October 12, 2026 and AlarmSMS Controller on October 15, 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.*