# TRSS Reaction vs Avia

The clearest difference is review sentiment: Avia at 78% against TRSS Reaction's 0%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | TRSS Reaction | Avia |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **77.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 50 MB | 38 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oryx Systems CC](https://appshunter.io/developer/966072104) | [Mighton](https://appshunter.io/developer/574451913) |

## What reviewers say

### TRSS Reaction

[App page](https://appshunter.io/ios/app/trss-reaction/id1253495250)

This app acts as a panic button, instantly alerting a control room to dispatch emergency services like fire, armed response, or ambulance. It also serves as a comprehensive security management platform for testing alarms, managing access, and providing holiday instructions.

**Highlights:** Instant emergency dispatch, Panic button functionality, Security management platform, Alarm testing and management, User access control, Holiday instruction feature

**In-app purchases:** none


### Avia

[App page](https://appshunter.io/ios/app/avia/id1405539855)

This app provides a secure and seamless way to manage your smart door lock. It integrates with Apple HomeKit, offering advanced encryption and multiple access methods for peace of mind. Enjoy intelligent alerts and an activity tracker for comprehensive home security.

**Highlights:** Apple HomeKit integration, Advanced 256-bit encryption, Child safety mode, Activity tracker with audit report, Intelligent lock status alerts, No drilling or wiring required

**In-app purchases:** none


## Frequently asked questions

### Is TRSS Reaction free?

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

### Is Avia free?

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

### Do TRSS Reaction or Avia have ads?

Neither TRSS Reaction nor Avia shows ads.

### Which is updated more often, TRSS Reaction or Avia?

TRSS Reaction ships an update every 2 months, and Avia every 2 months. Most recently, TRSS Reaction was updated on October 24, 2026 and Avia on October 3, 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.*