# SimpleX Chat vs Knock

The clearest difference is rating: Knock at 5.0 against SimpleX Chat's 4.3. Knock also leads on update cadence (daily vs every 2 weeks). SimpleX Chat's advantage is ratings volume (268 vs 2) and iOS requirement (15.0 vs 17.0). 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.

Knock holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: SimpleX Chat has 268 ratings behind it against 2, so its average is the more settled of the two.

SimpleX Chat ships an update every 2 weeks, Knock daily. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SimpleX Chat | Knock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (268 ratings)](https://appshunter.io/ios/app/simplex-chat-secure-messenger/id1605771084/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/knock-ready-check/id6806319399/reviews)** |
| Number of ratings | **268** | 2 |
| Positive reviews | 56.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Free | Free |
| Size | 193 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [SimpleX Chat](https://appshunter.io/developer/1605771086) | [Kakhaber Sinauridze](https://appshunter.io/developer/1855981575) |

## What reviewers say

### 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


### Knock

[App page](https://appshunter.io/ios/app/knock-ready-check/id6806319399)

This app simplifies coordinating game sessions with friends. It sends a single notification to your group, allowing them to respond instantly without opening the app. The lobby fills as people confirm, and you set the minimum number of responses needed to start.

**Highlights:** One-tap game invites, Respond from notifications, Customizable game thresholds, Expiring invites, Targeted nudges, Mute squads, No account required

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

**In-app purchases:** none


## Frequently asked questions

### Is SimpleX Chat free?

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

### Is Knock free?

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

### Which has better reviews, SimpleX Chat or Knock?

Knock is rated higher. SimpleX Chat averages 4.3 out of 5 from 268 ratings, while Knock averages 5.0 from 2 ratings.

### Do SimpleX Chat or Knock have ads?

Neither SimpleX Chat nor Knock shows ads.

### Which is updated more often, SimpleX Chat or Knock?

SimpleX Chat ships an update every 2 weeks, and Knock daily. Most recently, SimpleX Chat was updated on October 14, 2026 and Knock on October 2, 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.*