# Image to PDF vs Codex AI

The clearest difference is update cadence: Image to PDF at daily against Codex AI's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Image to PDF sells 4 in-app purchases, starting at $3.99 per 7 days and Codex AI sells 11 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Image to PDF ships an update daily, Codex AI weekly. The most recent releases landed on September 8, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Image to PDF | Codex AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (20 ratings)](https://appshunter.io/ios/app/codex-ai-remote-codex/id6784248620/reviews)** |
| Number of ratings | — | **20** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Freemium |
| Size | 23 MB | 41 MB |
| Requires iOS | 18.5 | **17** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [Harsh Kalavadia](https://appshunter.io/developer/1859866027) | [Vedat TANONUT](https://appshunter.io/developer/1864159536) |

## What reviewers say

### Image to PDF

[App page](https://appshunter.io/ios/app/image-to-pdf-zpdf/id6761462831)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Image to PDF ZPDF Week | $3.99 | per 7 days |
| Image to PDF ZPDF Year | $24.99 | per year |
| Image to PDF ZPDF Lifetime Gift | $9.99 | one-time |
| Image to PDF ZPDF Lifetime | $19.99 | one-time |


### Codex AI

[App page](https://appshunter.io/ios/app/codex-ai-remote-codex/id6784248620)

This AI-powered assistant helps you plan, organize, write, and analyze tasks efficiently. It offers features like coding assistance, smart Q&A, project management, and file summarization to streamline your workflow.

**Highlights:** AI Coding Assistance, Smart Q&A, Project Organization, File Reading & Summaries, Web Search Support, Schedule & Reminder Creation, Task & Note Generation

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forge Pro | $6.99 | per 7 days |
| premium | $9.99 | per 7 days |
| premium | $14.99 | per month |
| premium | $29.99 | per month |
| Forge Pro | $49.99 | per year |
| premium | $59.99 | per year |
| Tokens | $9.99 | one-time |
| Tokens | $19.99 | one-time |
| Tokens | $34.99 | one-time |
| Tokens | $59.99 | one-time |
| Tokens | $99.99 | one-time |


## Frequently asked questions

### Is Image to PDF free?

Image to PDF is free to download, with in-app purchases available.

### Is Codex AI free?

Codex AI is free to download, with in-app purchases available.

### Do Image to PDF or Codex AI have ads?

Neither Image to PDF nor Codex AI shows ads.

### Which is updated more often, Image to PDF or Codex AI?

Image to PDF ships an update daily, and Codex AI weekly. Most recently, Image to PDF was updated on September 8, 2026 and Codex AI on September 20, 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.*