# Olympia Core vs AlarmSMS Controller

The clearest difference is in-app purchases: Olympia Core at none against AlarmSMS Controller's 1. On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Olympia Core | AlarmSMS Controller |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 41 MB | 52 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Olympia Electronics](https://appshunter.io/developer/916524490) | [George Alexandrou](https://appshunter.io/developer/1875566334) |

## What reviewers say

### Olympia Core

[App page](https://appshunter.io/ios/app/olympia-core/id6749267037)

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

**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 Olympia Core free?

Olympia Core 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 Olympia Core or AlarmSMS Controller have ads?

Neither Olympia Core nor AlarmSMS Controller shows ads.

### Which is updated more often, Olympia Core or AlarmSMS Controller?

Olympia Core ships an update monthly, and AlarmSMS Controller monthly. Most recently, Olympia Core was updated on October 18, 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.*