# LispPad Go vs MTD SafeBrowsing Tester

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.

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.

## The numbers

| Metric | LispPad Go | MTD SafeBrowsing Tester |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (37 ratings)](https://appshunter.io/ios/app/lisppad-go/id1565747728/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 96.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 128 MB | 3 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Zenger](https://appshunter.io/developer/1258939759) | [Frank Srp](https://appshunter.io/developer/1882431013) |

## What reviewers say

### LispPad Go

[App page](https://appshunter.io/ios/app/lisppad-go/id1565747728)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MTD SafeBrowsing Tester

[App page](https://appshunter.io/ios/app/mtd-safebrowsing-tester/id6760037163)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LispPad Go free?

LispPad Go is free to download, with no in-app purchases.

### Is MTD SafeBrowsing Tester free?

MTD SafeBrowsing Tester is free to download, with no in-app purchases.

### Do LispPad Go or MTD SafeBrowsing Tester have ads?

Neither LispPad Go nor MTD SafeBrowsing Tester shows ads.

### Which is updated more often, LispPad Go or MTD SafeBrowsing Tester?

LispPad Go ships an update every 2 months, and MTD SafeBrowsing Tester every 5 months. Most recently, LispPad Go was updated on October 30, 2026 and MTD SafeBrowsing Tester on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*