Quick verdict
- What it is
- Store information collected; independent summary not yet available.
- At a glance
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- Free to download
Categories and search queries
Official categories
- Developer Tools
- Utilities
AppCorpus categories
Key functions
| Function | Availability | Access | Scope | Evidence |
|---|---|---|---|---|
| Free app | Yes | Free | — | Store published |
Screens
App Store
15 store screenshots
Pricing & paywalls
App Store
Shown for US
- Free
Ratings & reviews
App Store
Shown for US
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5/5Use with SICP, perfect
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!
VLenin · 31 Jul 2026
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4/5arrow keys needed!
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.
Vitalik Batsits · 31 Jul 2026
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5/5Get it, you won’t regret it!
R7RS Scheme always with you wherever you go (assuming you take your phone with you everywhere of course 😉)
DarkRadon · 31 Jul 2026
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5/5A great Scheme implementation
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.
Empty B · 31 Jul 2026
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5/5Great App
This app is great and easy to use. I’ve been learning SICP with this, it’s so convenient! Thank you developer!
charliepsl · 31 Jul 2026
Privacy & accessibility
App Store
Privacy
- Data Not Collected Developer declared
Accessibility
No accessibility labels collected yet.
Versions
App Store
- 1.0
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1.0.1
• Support opening files in LispPad Go triggered by other apps • Fixed various dark mode-related bugs • File handling improvements and bug fixes • Text editor display improvements
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1.1.0
• Console/editor split view on iPadOS • Markdown document previewer • Table of contents for markdown documents • Display graphics directly in the console • Support tighter line spacing in the console • Display stack trace in console for errors • Allow dismissing the keyboard in the editor view • New library (lispkit archive zip) for creating, reading, and writing zip archives
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1.1.1
• Extended keyboard for editing Markdown and Scheme code • Extended edit menu with support for looking up Scheme definitions in console and editor • Syntax highlighting, parenthesis matching, automatic indentation in console • Undo/redo support on iPhones • Improved keyboard dismissal in console • New example code • Interpreter now based on LispKit 2.0.1
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1.1.2
• Comprehensive support for keyboard shortcuts • Keyboard shortcut documentation accessible via LispPad menu • Fixed split view-related bugs (on iPadOS) • New library (lisppad location) supporting geocoding and reverse geocoding • New procedure open-in-files-app in library (lisppad system) • New example code • Interpreter now based on LispKit 2.0.2
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1.2.0
• Optimized user interface for iOS 15 • Improved synchronization with iCloud Drive • New in-context documentation viewer • Searchable Libraries view; include libraries that are not loaded • Support for search/replace; save search/replace history; enable case-insensitive search • New procedures icloud-directory and cloud-list in library (lisppad system) • Bug fixes in library (lisppad location) • Interpreter now based on LispKit 2.0.3
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1.2.1
• Integrated log viewer into console • Increased stack size of interpreter • Fixed file/editor loader • Fixed scrolling within console • Included new documentation for libraries (lispkit prolog), (lispkit math stats), (lispkit math util), (lispkit text-table), (srfi 166), (srfi 227), and (srfi 229) • Interpreter now based on LispKit 2.1.0
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1.2.2
• Adjusted colors used in REPL to improve legibility • Fixed bug leading to symbol definition views disappearing behind the keyboard
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1.3.0
• Allow setting font in preferences; allow for more granular font size choice • Support for threads • Go-inspired channels for synchronizing threads • Revamp of math libraries, addressing incompatibilities and fixing numerous bugs • Extended libraries (lispkit math), (lispkit math util), (lispkit system), (lispkit port), and (lispkit debug) • New libraries: (lispkit thread), (lispkit thread channel), (scheme flonum), (srfi 18), (srfi 144), (srfi 208), and (srfi 230) • Exceptions now include more information about the active call stack • Interpreter now based on LispKit 2.2.0
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1.3.1
• Performance improvements: Optimized code generation for lambdas without captured expressions • Fixed division by zero issues with truncate and floor procedures • Made procedure open-file of library (lispkit system) work on iOS • Extended libraries: (lispkit core), (lispkit string), (lispkit math), (lispkit type), (lispkit enum), (lispkit draw), and (lispkit clos) • New libraries: (lispkit math matrix), (lispkit bitset), (lispkit styled-text), (lispkit draw chart bar), (srfi 118), (srfi 141), (srfi 149), and (srfi 232) • New sample code: ObjectOrientation.scm, DrawBarCharts.scm, and StyledTextDoc.scm • Interpreter now based on LispKit 2.3.0
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1.3.2
• iOS 16 bug fixes
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1.3.3
• User interface changes to optimize the look and feel for iOS 16, including revised key bindings • Access to the log viewer in the console by swiping right • New settings for defining the maximum stack size and the maximum number of active calls to trace upon errors • New setting to prevent virtual keyboard extensions to be shown if there is a hardware keyboard • Display call stack when errors are shown on the console • Limit stack size to prevent application crashes • Fixed bug leading to deadlocks when using text ports • Fixed bug allowing to execute empty lists • Fixed serious bug leading to an infinite loop when iterating through stack traces • New procedure in library (lispkit thread): thread-max-stack • New library: (lisppad draw map) • New sample code: DisplayMap.scm • Interpreter now based on LispKit 2.3.1
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1.3.4
• Improved management of recent files and favorites. • Remember last edited file (can be switched off in the settings) • Improved display of file names in the editor • Fixed bug affecting byte vector copy procedures in library (lispkit bytevector) • Extended library: (lispkit graph) • New libraries: (srfi 228), (srfi 233), and (srfi 236) • Interpreter now based on LispKit 2.3.2
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2.0.0
• Redesigned the navigation between interpreter and editor • Redesigned the split screen mode for iPads, allowing free positioning of the splitter • Redesigned file/directory browser fixing usability issues and supporting file previews • Introduced drawing canvases (left-swipe in console) in addition to the log view (right-swipe in console) • Libraries can be imported via a swipe in the Libraries view; support for library list refresh • User experience bug fixes, especially involving modal sheets • Ported universal formatting facility from Common Lisp and made it available via library (lispkit format) • Library (lispkit records) now supports extensible records compatible to SRFI 131 • Made application scriptable via library (lisppad system ios) • Extended libraries: (lispkit system), (lispkit port), (lispkit bitset), (lispkit system), (lispkit draw), (lispkit draw turtle), (lispkit core), (lispkit type), (lispkit bytevector) • New libraries: (lisppad system ios), (lisppad turtle), (lispkit format), (lispkit crypto), (lispkit archive tar), (lispkit list set), (srfi 239), (srfi 235) • New sample code: Fractals.scm, Blockchain.scm • Interpreter now based on LispKit 2.4.0
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2.0.1
• Support sharing of canvases • Support smarter parenthesis matching for Lisp code • Reimplemented overflow menu of the editor, fixing bugs and providing new line-level features • Reimplemented REPL command history (long-press on "Send" button) • Reimplemented the "Load"/+ menu for reloading recent files and the editor buffer • Log files being loaded into the interpreter • Fixed cursor placement in the interpreter input • Fixed bug preventing the editor buffer to be emptied when "New" was selected • Fixed opening recent and starred files • Improved consistency of icon usage with LispPad on macOS • Updated LispPad Library Reference
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2.1
• Fixed keyboard shortcuts • Support separate sets of editor color schemes for light and dark mode • Allow setting the appearance (light vs. dark) at the application level • Extended available coding fonts • Support for all major JSON standards via libraries (lispkit json) and (lispkit json schema) • Support HTTP-based networking via libraries (lispkit http), (lispkit http oauth), and (lispkit http server) • Deeper integrations into iOS via libraries (lispkit system keychain) and (lispkit system pasteboard) • Support for drawing a variety of different types of bar codes via library (lispkit draw barcode) • New libraries: (lispkit url), (lispkit serialize), (lispkit thread future), and (lispkit thread shared-queue) • Extended libraries: (lispkit box), (lispkit thread), (lispkit system), (lispkit bytevector), (lispkit markdown), (lispkit dynamic), (lispkit control) • New sample code: Keychain.scm, WebAPIs.scm, and Webserver.scm • Updated LispPad Library Reference • Interpreter now based on LispKit 2.5.0
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2.2
• Updated app icon • New library and documentation browser • New "center menu" in the editor • Reimplemented canvas view to allow for more complex drawings • Fixed bugs in the file organizer • Allow overriding Prelude.scm • Bug fixes involving quasiquote and cond-expand • New library for handling locations: (lispkit location) • New library for creating and editing PDF documents: (lispkit pdf) • New library for solving computer vision problems: (lispkit vision) • New libraries for processing/manipulating images: (lispkit image), (lispkit image process) • New library for drawing maps: (lispkit draw map) • New library for making and drawing snapshots of web pages: (lispkit draw web) • Extensions of libraries (lispkit draw), (lispkit core), (lispkit enum), (lispkit date-time), and (lispkit object) • New sample code: ImageComposition.scm, OCR.scm, MermaidDiagrams.scm, Pinterest.scm • Updated LispPad Library Reference • Interpreter now based on LispKit 2.6.0
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2.2.1
· 22 Feb 2026
• 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
Alternatives
- Ruckus - Racket IDE — Same category + similar ratings
Availability by market
- US
Data quality & evidence
- Page completeness
- Live store listing
- Last verified
- 31 Jul 2026
- Sources
- App Store
- Independent summary has not been published yet.