LispPad Go is a simple, lightweight, integrated development environment for developing and running Scheme code on iOS. The language supported by LispPad Go is based on the R7RS standard of the Scheme programming language. LispPad Go provides the following components:
• A fully integrated Scheme interpreter
• A console with a read-eval-print loop to interact with the interpreter
• A text editor for writing Scheme code, supporting syntax highlighting, smart indentation, parenthesis matching, etc.
• A large range of libraries, including iOS-specific libraries e.g. for networking, graphics, audio, databases, archival, text processing, etc.
The Scheme dialect supported by LispPad Go provides the following features:
• R7RS-compliant libraries
• Hygienic macros based on syntax-rules
• First-class environments
• call/cc, dynamic-wind and exceptions
• Dynamically-scoped parameters
• Multiple return values
• Delayed execution via promises and streams
• Support for the full numerical tower consisting of arbitrary size integers, rationals, real numbers, and inexact complex numbers.
• Unicode strings and characters
• Vectors and bytevectors
• Text and binary ports
• R7RS-compliant extensible records
• R6RS-compliant hashtables and enumerations
• Threads
I can cut & paste on my IPad running iPad OS 14.6, between a .PDF of SICP, and execute the examples perfectly in this excellent app. GUI takes a little getting used to, no big deal though. Fun to play around with! Bravo to the developer!
arrow keys needed!
Vitalik Batsits
Amazing app for practicing scheme on your phone! I appreciate it and recommend it! The only one thing that I would ask developer: please, if it’s possible and not too hard, add arrow keys to virtual keyboard, at least left and right ones.
Developer Response
Thanks a lot for your feedback. As of version 2.2.1, there‘s a second set of keys on the virtual keyboard that includes cursor navigation keys.
Get it, you won’t regret it!
DarkRadon
R7RS Scheme always with you wherever you go (assuming you take your phone with you everywhere of course 😉)
A great Scheme implementation
Empty B
This is a beautiful programming environment. The user interface is clean and easy to use. Documentation is clear and extensive. There are scads of libraries available.
• Allow executing commands by pressing return on hardware keyboards (new setting)
• Revamped keyboard experience supporting a second extension focused on navigation
• Redesigned definition/document structure switchboard user experience
• Refreshed user experience for some panels
• Fixed inconsistent documentation font sizes
• Fixed bugs involving indentation and commenting features
Version 2.2.1
The developer, Matthias Zenger, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Matthias Zenger
Size
128.8 MB
Category
Developer Tools
Compatibility
Requires iOS 17.6 or later.
iPhone Requires iOS 17.6 or later.
iPad Requires iPadOS 17.6 or later.
Mac Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
