# TASSTA T.Star — 3GPP-Compliant Communications

> 3GPP-Compliant Communications (iPhone/iPad app by TASSTA GmbH.)

- Source: https://appshunter.io/ios/app/tassta-tstar/id6744697365 (this page in markdown: same URL + `.md`)
- Developer: [TASSTA GmbH](https://appshunter.io/developer/1557847309)
- Category: Social Networking, Business
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 54 MB
- Languages: American English
- Released: 2025-06-11
- Data updated: 2026-08-10
- User reviews in markdown: https://appshunter.io/ios/app/tassta-tstar/id6744697365/reviews.md

## What is TASSTA T.Star?

T.Star: Secure, 3GPP-Compliant Mission-Critical Communications
The next-generation communication client for organizations and first responders operating in highly regulated, large-scale, and strategic environments. Designed for the maximum security and reliability T.Star delivers real-time communication when every second counts.
Fully compliant with 3GPP standards, T.Star ensures seamless voice, emergency, and messaging capabilities, empowering the fastest, most coordinated response in the most critical situations.
 
Powered by TASSTA 3GPP MCX Infrastructure, T.Star Delivers:
 
- Mission Critical Push-to-Talk (MCPTT): Experience ultra-low latency, crystal-clear voice communication. Get instant one-to-one and group connections, every time, compliant with MCPTT standards.
- Mission Critical Data (MCData): Securely exchange vital messages and real-time location data. Improve situational awareness, enhance coordination, and ensure your team is always informed, adhering to MCData protocols.

Built for Unwavering Performance:

T.Star is the ideal communication partner for first responders, public safety agencies, emergency services, critical infrastructure operators, and enterprise teams with highest operational demands. It provides the robust reliability and peak performance required to manage any scenario with confidence.


Key Capabilities at Your Fingertips:

- Priority Voice Calls: High-priority group calls (with and without floor control) and direct one-to-one voice calls.
- Emergency & Alerts: Instant emergency and imminent peril alerts for immediate assistance.
- Secure Messaging: Confidential text messaging for fast exchange of important information.
- Integrated Tracking: Real-time location tracking and presence updates for complete team oversight.
- Optimized for LTE and 5G networks: Built for superior performance, ensuring speed and stability essential for mission-critical operations.
 
Important Note: This application requires a connection to the TASSTA MCX services (https://tassta.com/mcptt-2/) and valid user credentials to function.

Stay connected. Stay mission-ready. With T.Star.


## Version history (last 5 releases)

### 1.5.0 — 2026-08-06

* Rich text in chat messages
* Failed messages are now automatically resent upon reconnect or restart
* Message deletion
* Do Not Disturb mode
* Improved Crosscall X-COMM Bluetooth RSM support
* Improved satellite network information in system notifications and connection status
* UI/UX improvements
* Performance and stability improvements

### 1.4.0 — 2026-06-24

* Chat supports sending, playing, and downloading audio messages
* Chat features user mentions with quick actions
* The map allows tracking and communicating with other users
* Call requests display group context alongside user names
* Groups show participant lists
* The app supports recommended affiliations
* Checks domain availability upon connection
* Notifications display network connectivity status
* In-app alerts for satellite network information

### 1.3.1 — 2026-05-17

This hotfix addresses the issue of missing sounds from the app when it is in the background

### 1.3.0 — 2026-05-13

- The map now lets you mark points of interest and share them with other users and other navigation apps on the device
- Groundwork laid for PTT communication over WebRTC, to be completed in a future release
- Fixes to look-and-feel issues in the map view and other views

### 1.2.0 — 2026-04-01

- Chats now support file exchange, including file previews and mandatory downloads
- Chat performance and usability improvements
- Support for PTT timeout on the PTT button and the PTT screen
- Display of other users' online statuses
- Better handling of password update scenarios
- Fixes for connection management and look-and-feel issues

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## More apps by TASSTA GmbH

- [TASSTA T.Flex](https://appshunter.io/ios/app/tassta-tflex/id1557847307)
- [PrioCom T.Flex](https://appshunter.io/ios/app/priocom-tflex/id1595794653)
- [Entel E-PoC](https://appshunter.io/ios/app/entel-e-poc/id1601449400)
- [AIRSYS](https://appshunter.io/ios/app/airsys/id1611717327)
- [PTT100](https://appshunter.io/ios/app/ptt100/id1613521562)
- [RADIUS Smart application](https://appshunter.io/ios/app/radius-smart-application/id1613524123)

All apps by TASSTA GmbH: https://appshunter.io/developer/1557847309

## Related topics

[tassta t.star](https://appshunter.io/ios/topics/tassta-t-star)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-10.*