# Assembly Lab vs Pascal Playground

The clearest difference is review sentiment: Assembly Lab at 100% against Pascal Playground's 0%. Assembly Lab also leads on in-app purchases (none vs 3) and chart position (#14 vs unranked). Pascal Playground's advantage is price (Free vs $1.99) and update cadence (every 4 days vs every 6 weeks). On ads, device support and iOS requirement there is nothing between them.

Pascal Playground is free to download; Assembly Lab costs $1.99 up front. Pascal Playground sells 3 one-off in-app purchases. Assembly Lab asks for nothing beyond the download.

Assembly Lab ships an update every 6 weeks, Pascal Playground every 4 days. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Assembly Lab | Pascal Playground |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#14** | — |
| Size | 14 MB | 4 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing Hyperits Network Technology Co., Ltd.](https://appshunter.io/developer/1866276929) | [Igor Kulman](https://appshunter.io/developer/1859561306) |

## What reviewers say

### Assembly Lab

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

**Currently charting:** #14 Top Paid · Developer Tools, #179 Top Grossing · Developer Tools (US App Store)

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


### Pascal Playground

[App page](https://appshunter.io/ios/app/pascal-playground/id6761907191)

Write and run Pascal code instantly on iOS devices without any setup. This app offers a focused programming experience inspired by the classic Turbo Pascal environment, featuring a distraction-free editor and built-in examples. It's designed for both experienced Pascal users and newcomers.

**Highlights:** Instant Pascal code execution, No setup required, Distraction-free editor, Offline code running, Built-in examples, Retro Turbo Pascal theme

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Small | $0.99 | one-time |
| Support Medium | $2.99 | one-time |
| Support Large | $4.99 | one-time |


## Frequently asked questions

### Is Assembly Lab free?

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

### Is Pascal Playground free?

Pascal Playground is free to download, with in-app purchases available.

### Do Assembly Lab or Pascal Playground have ads?

Neither Assembly Lab nor Pascal Playground shows ads.

### Which is updated more often, Assembly Lab or Pascal Playground?

Assembly Lab ships an update every 6 weeks, and Pascal Playground every 4 days. Most recently, Assembly Lab was updated on September 10, 2026 and Pascal Playground on September 19, 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.*