# cl-repl — Common Lisp REPL with editor

> Common Lisp REPL with integrated editor, command line, and debugging tools. (iPhone/iPad app by Paul Ruetz.)

- Source: https://appshunter.io/ios/app/cl-repl/id1511296102 (this page in markdown: same URL + `.md`)
- Developer: [Paul Ruetz](https://appshunter.io/developer/1511296101)
- Category: Education, Developer Tools
- Price: Free
- Rating: 4.90/5 from 21 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 41 MB
- Released: 2020-05-02
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/cl-repl/id1511296102/reviews.md

## What is cl?

A Common Lisp REPL featuring a simple editor, a command line, and a debug dialog (for restarts). Everything for Swank/Slime and Quicklisp is already included .

The editor allows to locally save files, has simple syntax highlighting, basic auto-indent, basic auto-completion, copy-paste of S-expressions, and a simple search function.

## Key features

- Common Lisp REPL
- Integrated editor
- Command line interface
- Debug dialog for restarts
- Swank/Slime and Quicklisp support
- Syntax highlighting
- Auto-completion

## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/cl-repl/id1511296102/reviews.md

### 5/5 — lovely lisp

*2025-12-12, version 1.0.25*

usually i’m in sbcl via emacs slime & have found this app to be a perfect commonlisp for the iOS. happy hacking!

### 4/5 — Almost usable

*2025-02-03, version 1.0.25*

It’s amazing to be able to hack Lisp on an iPad! However, unfortunately, you can’t use it for real work because file management is non-existent: you can’t rename files, organize files into subdirectories, download others’ code (except using Quicklisp), open/save a file to any other app, etc. It’s hard to complain about a free app, but it’s so close to being good!

### 5/5 — Lisp is a beautiful thing

*2024-04-02, version 1.0.25*

I am so grateful to have it here.

### 5/5 — Wonderful for early lisp learners!

*2023-08-31*

I’m working my way through Touretzky’s “Common Lisp” and this app is a wonderful way to write brief scripts to practice syntax and test understanding.  Lisp rules!

### 4/5 — 5 stars. Great customer support

*2023-04-29, version 1.0.21*

Solid GUI without distracting bells & whistles. I got swift email support in response to questions.

### 5/5 — Fun LISP playground

*2022-10-21*

Cool app! Very fun to play around in!

### 5/5 — Superb

*2022-05-25, version 1.0.14*

I can’t believe I can run quick ANSI Common Lisp scripts on my phone! Awesome implementation! Thank you!

### 5/5 — Portable Common Lisp

*2022-03-09*

This app gives you a CL ide on iPad, with Quicklisp and even QT. Also has interesting examples for beginners.

### 5/5 — Files app integration needed

*2022-02-16, version 1.0.14*

Thanks for the fun app. It would be helpful if the app integrated with the files app so it coukd open and save files and folders elsewhere on the device like in other apps like Working Copy.

### 5/5 — This is a LISP dream

*2021-11-12, version 1.0.12*

Thank you, thank you, thank you.  I am using this with Land of Lisp to learn to code a bit.  What a delight!

Please add some documentation on how to use Quicklisp and make QMI things?  Also, please make the app able to sit half-screen for folks on iPadOS.

## Frequently asked questions about cl

### What is cl-repl?

cl-repl is a mobile application that provides a Common Lisp Read-Eval-Print Loop (REPL) along with an integrated editor. It's designed for writing, running, and debugging Common Lisp code directly on your device.

### What programming languages does cl-repl support?

cl-repl specifically supports the Common Lisp programming language. It includes features like syntax highlighting and auto-completion tailored for Lisp.

### Does cl-repl offer debugging capabilities?

Yes, cl-repl includes a debug dialog that assists with handling restarts, a crucial part of debugging in Common Lisp. This allows for more interactive error resolution.

### Is cl-repl suitable for beginners learning Common Lisp?

Yes, cl-repl is suitable for beginners as it offers a simplified environment with features like syntax highlighting and auto-completion. Its integrated nature makes it easier to get started with Common Lisp.

### What are the system requirements for cl-repl?

cl-repl is available for iPhone, iPad, and iPod. It has an age rating of 4+ and is developed by Paul Ruetz.

### How often is cl-repl updated?

The latest version of cl-repl is 1.0.25, which was last updated on November 26, 2023. This indicates a relatively active development cycle for the application.

### What is the user rating for cl-repl?

cl-repl has received an excellent rating of 4.9 stars from 21 ratings, suggesting a high level of user satisfaction with its functionality and performance.

### Does cl-repl have ads?

No, cl-repl does not contain advertisements. It is a completely free application without any ad interruptions.

## Version history (last 5 releases)

### 1.0.25 — 2023-11-26

Ensure latest output visible when showing query dialog.

### 1.0.24 — 2023-11-23

Query dialog (for input) now a popup (instead of full screen).

### 1.0.23 — 2023-09-01

Added split screen support.
Added button color settings; add these new variables in 'settings/colors.lisp':
(setf *button-color* "#e0e0e0")
(setf *button-text-color* "#26282a")
(setf *button-opacity* 0.12) ; (arrow and paren buttons only)
(setf *cursor-color* "blue")

### 1.0.22 — 2023-08-30

Added button color settings; add these 3 new variables in 'settings/colors.lisp':
(setf *button-color* "#e0e0e0")
(setf *button-text-color* "#26282a")
(setf *button-opacity* 0.12) ; (arrow and paren buttons only)

### 1.0.21 — 2023-01-02

fixed zip / unzip when using "doc" shorthand

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## Related topics

[lispapp](https://appshunter.io/ios/topics/lispapp)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*