# TASSTA T.Flex vs SimpleX Chat

The clearest difference is rating: TASSTA T.Flex at 5.0 against SimpleX Chat's 4.3. TASSTA T.Flex also leads on device support (4 vs 2). SimpleX Chat's advantage is ratings volume (276 vs 1) and update cadence (every 2 weeks vs every 6 weeks). 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.

TASSTA T.Flex holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: SimpleX Chat has 276 ratings behind it against 1, so its average is the more settled of the two.

TASSTA T.Flex ships an update every 6 weeks, SimpleX Chat every 2 weeks. The most recent releases landed on October 20, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | TASSTA T.Flex | SimpleX Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tassta-tflex/id1557847307/reviews)** | [4.3 (276 ratings)](https://appshunter.io/ios/app/simplex-chat-secure-messenger/id1605771084/reviews) |
| Number of ratings | 1 | **276** |
| Positive reviews | — | 56.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 64 MB | 193 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [TASSTA GmbH](https://appshunter.io/developer/1557847309) | [SimpleX Chat](https://appshunter.io/developer/1605771086) |

## What reviewers say

### TASSTA T.Flex

[App page](https://appshunter.io/ios/app/tassta-tflex/id1557847307)

This app provides mission-critical communication for professionals in demanding situations. It offers voice and video calls, secure messaging, location tracking, and task management, ensuring reliable connectivity for public safety and business operations.

**Highlights:** Voice and video calls, Secure messaging, Location tracking, Task management, Lone worker protection, Emergency alerts

**Features:** Siri integration, Apple Watch app

**In-app purchases:** none


### SimpleX Chat

[App page](https://appshunter.io/ios/app/simplex-chat-secure-messenger/id1605771084)

This secure messaging app offers unparalleled privacy by eliminating user identifiers. Enjoy end-to-end encrypted messages, calls, and files with features like disappearing messages and incognito mode. Connect via invitation links without needing phone numbers or emails.

**Highlights:** No user identifiers, End-to-end encrypted messages, Disappearing messages, Incognito mode, Encrypted file and voice messages, Secret chat groups, Encrypted portable chat database

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🔒 End-to-end encryption and quantum-resistant security
- 🔐 No phone number or personal data required
- 👤 Anonymous profiles and multiple identities
- 🚀 Fast message delivery when working properly
- 🎯 Decentralized and open-source architecture

**What reviewers complain about**

- 🐛 Frequent app crashes and instability
- 📬 Delayed or missing notifications (20+ minutes common)
- ⌨️ Keyboard issues on iOS (freezing, unresponsive)
- 🔌 Poor connectivity and message delivery failures
- 📱 iPad version not optimized

**Reported bugs**

- App crashes on startup (v6.2 update)
- Keyboard unresponsive on iOS 26
- Messages not appearing until app is opened
- Notifications not working despite correct settings
- Chat freezing and lag on iPhone

**Requested features**

- Read receipts option
- Typing indicators
- Bot maker feature like Telegram
- Multiple image attachment with descriptions
- Better emoji reaction selection


## Frequently asked questions

### Is TASSTA T.Flex free?

TASSTA T.Flex is free to download, with no in-app purchases.

### Is SimpleX Chat free?

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

### Which has better reviews, TASSTA T.Flex or SimpleX Chat?

TASSTA T.Flex is rated higher. TASSTA T.Flex averages 5.0 out of 5 from 1 ratings, while SimpleX Chat averages 4.3 from 276 ratings.

### Do TASSTA T.Flex or SimpleX Chat have ads?

Neither TASSTA T.Flex nor SimpleX Chat shows ads.

### Which is updated more often, TASSTA T.Flex or SimpleX Chat?

TASSTA T.Flex ships an update every 6 weeks, and SimpleX Chat every 2 weeks. Most recently, TASSTA T.Flex was updated on October 20, 2026 and SimpleX Chat on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*