# Assembly Lab vs Slint Viewer

The clearest difference is price: Slint Viewer at Free against Assembly Lab's $1.99. On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

Slint Viewer is free to download; Assembly Lab costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Assembly Lab ships an update monthly, Slint Viewer every 6 weeks. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Assembly Lab | Slint Viewer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/slint-viewer/id6773729654/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Paid | **Free** |
| Size | 14 MB | 49 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing Hyperits Network Technology Co., Ltd.](https://appshunter.io/developer/1866276929) | [SixtyFPS GmbH](https://appshunter.io/developer/1757134627) |

## What reviewers say

### Assembly Lab

[App page](https://appshunter.io/ios/app/assembly-lab-8086-nasm-ide/id6757485881)

This app provides a powerful x86 16-bit real mode assembly language simulator and debugger for mobile devices and Mac. It offers real-time disassembly, register monitoring, memory browsing, and BIOS/DOS interrupt support for learning and practicing low-level programming.

**Highlights:** x86 16-bit CPU emulation, NASM syntax assembler, Real-time disassembly, Breakpoint debugging, Register and memory monitoring, BIOS/DOS interrupt support

**Features:** Vision Pro support

**In-app purchases:** none


### Slint Viewer

[App page](https://appshunter.io/ios/app/slint-viewer/id6773729654)

This developer tool allows you to preview Slint user interfaces directly on your iPhone or iPad. It connects to your code editor over a local network, displaying your .slint designs live as you make changes. Some programming experience is recommended for optimal use.

**Highlights:** Live UI preview on iOS, Connects to code editor, Real-time design updates, Supports Slint toolkit

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Assembly Lab free?

Assembly Lab costs $1.99, with no in-app purchases.

### Is Slint Viewer free?

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

### Do Assembly Lab or Slint Viewer have ads?

Neither Assembly Lab nor Slint Viewer shows ads.

### Which is updated more often, Assembly Lab or Slint Viewer?

Assembly Lab ships an update monthly, and Slint Viewer every 6 weeks. Most recently, Assembly Lab was updated on November 9, 2026 and Slint Viewer on November 5, 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.*