# QtWS 2019 (QtWorldSummit) vs MLC Chat

The clearest difference is rating: QtWS 2019 (QtWorldSummit) at 5.0 against MLC Chat's 4.2. QtWS 2019 (QtWorldSummit) also leads on review sentiment (100% vs 68%) and update cadence (every 3 weeks vs every 2 months). MLC Chat's advantage is ratings volume (84 vs 1). 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.

QtWS 2019 (QtWorldSummit) holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: MLC Chat has 84 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of QtWS 2019 (QtWorldSummit)'s written reviews are positive against 68% of MLC Chat's.

QtWS 2019 (QtWorldSummit) ships an update every 3 weeks, MLC Chat every 2 months. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | QtWS 2019 (QtWorldSummit) | MLC Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/qtws-2019-qtworldsummit/id1156106928/reviews)** | [4.2 (84 ratings)](https://appshunter.io/ios/app/mlc-chat/id6448482937/reviews) |
| Number of ratings | 1 | **84** |
| Positive reviews | **100.0% of reviews** | 68.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 60 MB | 1.7 GB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Ekkehard Gentz](https://appshunter.io/developer/1144162385) | [Tianqi Chen](https://appshunter.io/developer/1684828246) |

## What reviewers say

### QtWS 2019 (QtWorldSummit)

[App page](https://appshunter.io/ios/app/qtws-2019-qtworldsummit/id1156106928)

Access schedules, speaker bios, and session abstracts for the Qt World Summit. Navigate event locations with an integrated floor map and personalize your experience by selecting favorite talks. This app is built with Qt and is cross-platform.

**Highlights:** Event schedule access, Speaker biographies, Session abstracts, Integrated floor map, Personalized talk selection, Cross-platform compatibility

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

**In-app purchases:** none


### MLC Chat

[App page](https://appshunter.io/ios/app/mlc-chat/id6448482937)

Engage in conversations with open language models directly on your iPad or iPhone. Once a model is downloaded, all interactions occur locally, ensuring privacy and offline functionality without internet access. This app is designed for non-commercial use, allowing you to run various open-source language models on your device.

**Highlights:** Local AI model chat, Offline functionality, No internet required, Privacy-focused, Open-source project integration, Downloadable language models

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Runs fast locally
- ✅ Works offline
- 💰 Free to use
- 👍 Easy to use
- 💡 Supports various LLM models

**What reviewers complain about**

- ⚠️ Limited model selection
- 📉 High VRAM requirements
- 📱 Incompatible with older devices
- ❌ Crashes on some devices/models
- 🗄️ Cannot save conversations

**Reported bugs**

- Phi model crashes on iOS 26.0.1 17 Pro Max
- App crashes on iPad Pro 4th Gen, iPadOs 17.7
- RedPajama model crashes app on initialization
- Update is extremely slow
- Download model button disabled in new version

**Requested features**

- Ability to import custom models (from URL/Hugging Face)
- Support for more specific models (DeepSeek, Phi-2, Gemma 2B/7B, MoE Mixtral 8x7B, LLaVA)
- History of conversations
- iOS shortcuts support
- Ability to export entire responses


## Frequently asked questions

### Is QtWS 2019 (QtWorldSummit) free?

QtWS 2019 (QtWorldSummit) is free to download, with no in-app purchases.

### Is MLC Chat free?

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

### Which has better reviews, QtWS 2019 (QtWorldSummit) or MLC Chat?

QtWS 2019 (QtWorldSummit) is rated higher. QtWS 2019 (QtWorldSummit) averages 5.0 out of 5 from 1 ratings, while MLC Chat averages 4.2 from 84 ratings.

### Do QtWS 2019 (QtWorldSummit) or MLC Chat have ads?

Neither QtWS 2019 (QtWorldSummit) nor MLC Chat shows ads.

### Which is updated more often, QtWS 2019 (QtWorldSummit) or MLC Chat?

QtWS 2019 (QtWorldSummit) ships an update every 3 weeks, and MLC Chat every 2 months. Most recently, QtWS 2019 (QtWorldSummit) was updated on October 4, 2026 and MLC Chat on October 24, 2026.

---

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