# Campus Labs® Event Check vs Kotlin Programming Compiler

The clearest difference is in-app purchases: Campus Labs® Event Check at none against Kotlin Programming Compiler's 1. Campus Labs® Event Check also leads on ads (none vs shown) and ratings volume (1.5K vs 7). Kotlin Programming Compiler's advantage is review sentiment (56% vs 43%) and iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Kotlin Programming Compiler sells 1 one-off in-app purchase. Campus Labs® Event Check asks for nothing beyond the download.

Campus Labs® Event Check holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Campus Labs® Event Check has 1.5K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 43% of Campus Labs® Event Check's written reviews are positive against 56% of Kotlin Programming Compiler's, so the app with the better star average is not the one people write more warmly about.

Campus Labs® Event Check ships an update monthly, Kotlin Programming Compiler every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Campus Labs® Event Check | Kotlin Programming Compiler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.5K ratings)](https://appshunter.io/ios/app/campus-labs-event-check-in/id1221503400/reviews)** | [4.6 (7 ratings)](https://appshunter.io/ios/app/kotlin-programming-compiler/id1450611634/reviews) |
| Number of ratings | **1.5K** | 7 |
| Positive reviews | 42.9% of reviews | **55.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 20 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Campus Labs, Inc.](https://appshunter.io/developer/320512904) | [Ketan Appa](https://appshunter.io/developer/576435759) |

## What reviewers say

### Campus Labs® Event Check

[App page](https://appshunter.io/ios/app/campus-labs-event-check-in/id1221503400)

This app allows campus event hosts to securely check students into events using their mobile devices. It acts as a companion to a web application, streamlining the event attendance process for organizers.

**Highlights:** Mobile event check-in, Secure student entry, Companion to web app, Event host tool

**In-app purchases:** none


### Kotlin Programming Compiler

[App page](https://appshunter.io/ios/app/kotlin-programming-compiler/id1450611634)

Write and execute Kotlin code directly on your mobile device. This app is designed for learning and testing code snippets with features like syntax highlighting and a custom keyboard. It allows you to compile, run, and share your Kotlin files.

**Highlights:** Compile and run Kotlin programs, View program output and errors, Custom keyboard for easy input, Advanced source code editor, Syntax highlighting and line numbers, Open, save, import, and share files

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $2.99 | one-time |


## Frequently asked questions

### Is Campus Labs® Event Check free?

Campus Labs® Event Check is free to download, with no in-app purchases.

### Is Kotlin Programming Compiler free?

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

### Which has better reviews, Campus Labs® Event Check or Kotlin Programming Compiler?

Campus Labs® Event Check is rated higher. Campus Labs® Event Check averages 4.8 out of 5 from 1.5K ratings, while Kotlin Programming Compiler averages 4.6 from 7 ratings.

### Do Campus Labs® Event Check or Kotlin Programming Compiler have ads?

Kotlin Programming Compiler shows ads; Campus Labs® Event Check does not.

### Which is updated more often, Campus Labs® Event Check or Kotlin Programming Compiler?

Campus Labs® Event Check ships an update monthly, and Kotlin Programming Compiler every 2 months. Most recently, Campus Labs® Event Check was updated on November 2, 2026 and Kotlin Programming Compiler on November 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.*