# CSI vs PDF Editor

The clearest difference is in-app purchases: CSI at none against PDF Editor's 2. CSI also leads on ads (none vs shown) and device support (3 vs 1). On price, review sentiment, update cadence and iOS requirement there is nothing between them.

Both are free to download. PDF Editor sells 2 in-app purchases, starting at $5.99 per 7 days. CSI asks for nothing beyond the download.

CSI ships an update monthly, PDF Editor every 3 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CSI | PDF Editor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (31 ratings)](https://appshunter.io/ios/app/pdf-editor-convert-file/id6758133226/reviews)** |
| Number of ratings | — | **31** |
| Positive reviews | **26.9% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 16 MB | 79 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MVM Ingenieria de Software S.A.S](https://appshunter.io/developer/1494519769) | [Wellresion Limited](https://appshunter.io/developer/1864858112) |

## What reviewers say

### CSI

[App page](https://appshunter.io/ios/app/csi/id1494519770)

This application is designed to collect information through surveys. It helps in segmenting consumers by gathering valuable data.

**Highlights:** Collect survey information, Consumer segmentation, Data gathering

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Editor

[App page](https://appshunter.io/ios/app/pdf-editor-convert-file/id6758133226)

Transform your device into a mobile office for efficient PDF management. Extract text from images, edit documents, convert images to PDF, and organize files with ease. This all-in-one utility offers a user-friendly interface for students and professionals.

**Highlights:** Smart OCR and text recognition, Professional PDF editing tools, Image to PDF conversion, Batch image conversion, Page management, Easy file import and sharing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Editor Ad-Free | $5.99 | per 7 days |
| PDF Editor Ad-Free | $29.99 | per year |


## Frequently asked questions

### Is CSI free?

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

### Is PDF Editor free?

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

### Do CSI or PDF Editor have ads?

PDF Editor shows ads; CSI does not.

### Which is updated more often, CSI or PDF Editor?

CSI ships an update monthly, and PDF Editor every 3 weeks. Most recently, CSI was updated on October 14, 2026 and PDF Editor on October 12, 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.*