LispPad Go vs Arrayground
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LispPad Go
This app is a lightweight development environment for writing and running Scheme code on iOS. It features a Scheme interpreter, a console for interaction, and a text editor with syntax highlighting and smart indentation. It supports R7RS standard Scheme with a wide range of libraries, including iOS-specific ones.
- Integrated Scheme interpreter
- Read-eval-print loop console
- Syntax highlighting text editor
- R7RS standard Scheme support
- iOS-specific libraries
- Hygienic macros
- Full numerical tower support
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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. • Support for the Shortcuts app, allowing the execution of LispPad programs as standalone applications 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
Arrayground
This app provides a mobile interface for interacting with CBQN and ngn/k libraries. It functions as a REPL (Read-Eval-Print Loop) for developers working with these specific programming environments on their mobile devices.
- Mobile REPL interface
- CBQN library integration
- ngn/k library integration
- SwiftUI application
- Works on iPhone and iPad
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A SwiftUI application to interface with CBQN and ngn/k libraries into a working repl.
Screenshots
Verdict
The clearest difference is update cadence: Arrayground at every 5 days against LispPad Go's every 2 months. LispPad Go's advantage is ratings volume (37 vs 4). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for LispPad Go against 4.8 for Arrayground. That said, the two scores are not equally well evidenced: LispPad Go has 37 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 96% of LispPad Go's written reviews are positive against 100% of Arrayground's.
LispPad Go ships an update every 2 months, Arrayground every 5 days. The most recent releases landed on September 20, 2026 and August 5, 2026 respectively.
| Parameter | LispPad Go | Arrayground |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (37 ratings) — better | 4.8 (4 ratings) |
| Positive reviews | 96.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 37 — better | 4 |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 128 MB | 6 MB |
| Age rating | 4+ | 17+ |
| Developer | Matthias Zenger | Asakura |
Customer experience
LispPad Go
Arrayground
In-app purchases
LispPad Go
No in-app purchases
Arrayground
No in-app purchases
