# Swifty Compiler vs U Game Engine + xLua

The clearest difference is review sentiment: Swifty Compiler at 84% against U Game Engine + xLua's 0%. Swifty Compiler also leads on price (Free vs $19.99) and ratings volume (194 vs 2). U Game Engine + xLua's advantage is rating (5.0 vs 4.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

Swifty Compiler is free to download; U Game Engine + xLua costs $19.99 up front. Swifty Compiler sells 4 in-app purchases, starting at $4.99 per 7 days and U Game Engine + xLua sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

U Game Engine + xLua holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Swifty Compiler has 194 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 84% of Swifty Compiler's written reviews are positive against 0% of U Game Engine + xLua's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Swifty Compiler | U Game Engine + xLua |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [4.5 (194 ratings)](https://appshunter.io/ios/app/swifty-compiler-swift-ide/id1544749600/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/u-game-engine-plus-xlua/id6743805852/reviews)** |
| Number of ratings | **194** | 2 |
| Positive reviews | **84.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | **Freemium** | Paid |
| Best chart rank | **#71** | — |
| Size | 70 MB | 599 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hassan Taleb](https://appshunter.io/developer/955305566) | [盼军 崔](https://appshunter.io/developer/567286451) |

## What reviewers say

### Swifty Compiler

[App page](https://appshunter.io/ios/app/swifty-compiler-swift-ide/id1544749600)

**Currently charting:** #71 Top Grossing · Developer Tools, #89 Top Free · Developer Tools (US App Store)

Write, run, and experiment with Swift code on your mobile device. This app functions as a personal playground for testing algorithms, prototyping ideas, and enhancing coding skills with a variety of editing tools.

**Highlights:** Write and run Swift code, Import Swift and Playground files, Code completion and error highlighting, Code formatting and syntax correction, Code snapshots (PNG, JPEG, PDF), Dark and light mode support, Unlimited credits (Premium)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Subscription | $4.99 | per 7 days |
| Premium Monthly Subscription | $12.99 | per month |
| Premium Yearly Subscription | $79.99 | per year |
| Premium Lifetime | $99.00 | one-time |

**What reviewers like**

- 🚀 Fast code execution
- 👍 Easy to use interface
- 💡 Great for on-the-go coding
- ✨ Good for learning Swift
- ✅ Useful for testing logic

**What reviewers complain about**

- 💰 High cost for features
- ⚠️ Limited free usage
- 💸 Subscription model criticized
- 🚫 No offline mode
- 🤔 Unreasonable charging logic

**Reported bugs**

- Refund screenshots are not correct
- Kept loading without doing anything
- Issues related to JSON parsing
- Cannot save projects without paying
- Cannot use Date or Calendar as types

**Requested features**

- Support for newer Swift versions
- Ability to import projects online
- Cache 'premium' pop-up
- Support multithreading (GCD)
- Fix console printing bug


### U Game Engine + xLua

[App page](https://appshunter.io/ios/app/u-game-engine-plus-xlua/id6743805852)

Create and run 2D and 3D games directly on your mobile device. Script gameplay using Lua, import assets, and test instantly. This app provides professional-grade game development tools in a pocket-sized format.

**Highlights:** Build 2D/3D games on iOS, Script with Lua, Real-time testing, Import assets, Integrated development environment, Lua tutorials

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $2.99 | one-time |


## Frequently asked questions

### Is Swifty Compiler free?

Swifty Compiler is free to download, with in-app purchases available.

### Is U Game Engine + xLua free?

U Game Engine + xLua costs $19.99, and also offers in-app purchases.

### Which has better reviews, Swifty Compiler or U Game Engine + xLua?

U Game Engine + xLua is rated higher. Swifty Compiler averages 4.5 out of 5 from 194 ratings, while U Game Engine + xLua averages 5.0 from 2 ratings.

### Do Swifty Compiler or U Game Engine + xLua have ads?

Neither Swifty Compiler nor U Game Engine + xLua shows ads.

### Which is updated more often, Swifty Compiler or U Game Engine + xLua?

Swifty Compiler ships an update fortnightly, and U Game Engine + xLua fortnightly. Most recently, Swifty Compiler was updated on October 13, 2026 and U Game Engine + xLua on October 3, 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.*