LispPad Go vs MTD SafeBrowsing Tester
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
MTD SafeBrowsing Tester
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MTD SafeBrowsing Tester is a lightweight diagnostic tool that evaluates how a mobile device responds when accessing different web URLs. The app performs standard HTTPS requests using Apple's networking APIs and records the outcome of each request. This allows developers, IT administrators, and security professionals to better understand how network policies and mobile security solutions respond to different types of URLs. Key Features • Test batches of URLs using standard HTTPS requests • View results showing Allowed, Blocked, or Error outcomes • Monitor response timing and request status • Simple dashboard with scan statistics and recent results • Export test results for analysis or documentation How It Works The application performs normal HTTPS requests using Apple’s URLSession networking framework and records the connection result. No traffic interception, packet capture, or network manipulation occurs. Privacy MTD SafeBrowsing Tester does not collect, store, or transmit personal data. All testing results remain on the device during the active session and are cleared when the app closes. Intended Use This tool is designed for security testing, network diagnostics, and demonstration purposes.
Screenshots
Verdict
The clearest difference is update cadence: LispPad Go at every 2 months against MTD SafeBrowsing Tester's every 5 months. On price, ads, in-app purchases and device support 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.
LispPad Go ships an update every 2 months, MTD SafeBrowsing Tester every 5 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | LispPad Go | MTD SafeBrowsing Tester |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (37 ratings) — better | — |
| Positive reviews | 96.3% of reviews | — |
| Number of ratings | 37 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 128 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthias Zenger | Frank Srp |
In-app purchases
LispPad Go
No in-app purchases
MTD SafeBrowsing Tester
No in-app purchases








