# BLACKBOXAI vs Grade Tests | Corrigi

The clearest difference is device support: BLACKBOXAI at 3 against Grade Tests | Corrigi's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BLACKBOXAI ships an update weekly, Grade Tests | Corrigi every 6 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | BLACKBOXAI | Grade Tests | Corrigi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (47 ratings)](https://appshunter.io/ios/app/blackboxai/id6740283751/reviews)** | — |
| Number of ratings | **47** | — |
| Positive reviews | 24.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free | — |
| Size | 19 MB | 19 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [RIZK Richard](https://appshunter.io/developer/883414841) | [Robotimize Ltda](https://appshunter.io/developer/397681247) |

## What reviewers say

### BLACKBOXAI

[App page](https://appshunter.io/ios/app/blackboxai/id6740283751)

This AI-powered coding assistant helps developers write and release software faster. It translates natural language into code, offers real-time knowledge, and provides intelligent code completion. Analyze screenshots, generate comments, and create commit messages with ease.

**Highlights:** Natural language to code generation, Real-time world knowledge, Intelligent code completion, Image input analysis (VISION), Automated code commenting, Commit message generation, Chat with code files

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

**In-app purchases:** none


### Grade Tests | Corrigi

[App page](https://appshunter.io/ios/app/grade-tests-corrigi/id6771878747)

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

**In-app purchases:** none


## Frequently asked questions

### Is BLACKBOXAI free?

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

### Is Grade Tests | Corrigi free?

Grade Tests | Corrigi is free to download, with no in-app purchases.

### Do BLACKBOXAI or Grade Tests | Corrigi have ads?

Neither BLACKBOXAI nor Grade Tests | Corrigi shows ads.

### Which is updated more often, BLACKBOXAI or Grade Tests | Corrigi?

BLACKBOXAI ships an update weekly, and Grade Tests | Corrigi every 6 days. Most recently, BLACKBOXAI was updated on October 7, 2026 and Grade Tests | Corrigi on October 1, 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.*