# ERA Vault Alarm System vs AlarmSMS Controller

The clearest difference is in-app purchases: ERA Vault Alarm System at none against AlarmSMS Controller's 1. ERA Vault Alarm System also leads on iOS requirement (9.0 vs 16.0). AlarmSMS Controller's advantage is update cadence (every 2 months vs every 10 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. ERA Vault Alarm System asks for nothing beyond the download.

ERA Vault Alarm System ships an update every 10 months, AlarmSMS Controller every 2 months. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ERA Vault Alarm System | AlarmSMS Controller |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Size | 77 MB | 32 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ERA HOME SECURITY LIMITED](https://appshunter.io/developer/1048919140) | [George Alexandrou](https://appshunter.io/developer/1875566334) |

## What reviewers say

### ERA Vault Alarm System

[App page](https://appshunter.io/ios/app/era-vault-alarm-system/id1160042484)

**Features:** macOS Compatibility

**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 ERA Vault Alarm System free?

ERA Vault Alarm System 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 ERA Vault Alarm System or AlarmSMS Controller have ads?

Neither ERA Vault Alarm System nor AlarmSMS Controller shows ads.

### Which is updated more often, ERA Vault Alarm System or AlarmSMS Controller?

ERA Vault Alarm System ships an update every 10 months, and AlarmSMS Controller every 2 months. Most recently, ERA Vault Alarm System was updated on October 10, 2026 and AlarmSMS Controller on October 25, 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.*