# PYROSOFT FDS Client vs TAS Viewer

The clearest difference is update cadence: TAS Viewer at every 2 months against PYROSOFT FDS Client's every 6 months. PYROSOFT FDS Client's advantage is iOS requirement (10.0 vs 14.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

PYROSOFT FDS Client ships an update every 6 months, TAS Viewer every 2 months. The most recent releases landed on June 20, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | PYROSOFT FDS Client | TAS Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pyrosoft-fds-client/id1449237226/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 77 MB | 32 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DIAS Infrared GmbH](https://appshunter.io/developer/1449237225) | [红杰 李](https://appshunter.io/developer/1602186097) |

## What reviewers say

### PYROSOFT FDS Client

[App page](https://appshunter.io/ios/app/pyrosoft-fds-client/id1449237226)

Access and control PYROVIEW FDS fire detection systems remotely. Receive real-time image data, status updates, and command transmission. Get instant notifications for errors or alarms via push messages or email.

**Highlights:** Remote system access, Image data and status information, Command transmission for remote control, Push message and email notifications, Network connection to PYROSOFT FDS server

**Features:** macOS Compatibility

**In-app purchases:** none


### TAS Viewer

[App page](https://appshunter.io/ios/app/tas-viewer/id1605567151)

This application provides tools for the secondary analysis of infrared imaging data. It allows users to examine and interpret thermal images for various purposes.

**Highlights:** Infrared imaging secondary analysis, Thermal image interpretation, Data examination tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PYROSOFT FDS Client free?

PYROSOFT FDS Client is free to download, with no in-app purchases.

### Is TAS Viewer free?

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

### Do PYROSOFT FDS Client or TAS Viewer have ads?

Neither PYROSOFT FDS Client nor TAS Viewer shows ads.

### Which is updated more often, PYROSOFT FDS Client or TAS Viewer?

PYROSOFT FDS Client ships an update every 6 months, and TAS Viewer every 2 months. Most recently, PYROSOFT FDS Client was updated on June 20, 2026 and TAS Viewer on June 11, 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.*