# Codex Usage vs KLink AI

The clearest difference is iOS requirement: KLink AI at 15.1 against Codex Usage's 18.0. 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.

## The numbers

| Metric | Codex Usage | KLink AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 1 MB | 141 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [赛 刘](https://appshunter.io/developer/1827738851) | [型银 王](https://appshunter.io/developer/6778631257) |

## What reviewers say

### Codex Usage

[App page](https://appshunter.io/ios/app/codex-usage/id6770208984)

**Features:** Apple Watch app

**In-app purchases:** none


### KLink AI

[App page](https://appshunter.io/ios/app/klink-ai-agents-and-ai-chat/id6781585419)

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

**In-app purchases:** none


## Frequently asked questions

### Is Codex Usage free?

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

### Is KLink AI free?

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

### Do Codex Usage or KLink AI have ads?

Neither Codex Usage nor KLink AI shows ads.

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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.*