# OLPHA SkoolTech Plus vs PDF Compressor ・ PDF Converter

The clearest difference is in-app purchases: OLPHA SkoolTech Plus at none against PDF Compressor ・ PDF Converter's 10. OLPHA SkoolTech Plus also leads on ads (none vs shown). PDF Compressor ・ PDF Converter's advantage is update cadence (every 5 days vs every 3 months) and iOS requirement (15.6 vs 17.0). On price and device support there is nothing between them.

Both are free to download. PDF Compressor ・ PDF Converter sells 9 in-app purchases, starting at $4.99 per 7 days. OLPHA SkoolTech Plus asks for nothing beyond the download.

OLPHA SkoolTech Plus ships an update every 3 months, PDF Compressor ・ PDF Converter every 5 days. Both last shipped on October 9, 2026.

## The numbers

| Metric | OLPHA SkoolTech Plus | PDF Compressor ・ PDF Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (70 ratings)](https://appshunter.io/ios/app/pdf-compressor-pdf-converter/id6742428142/reviews)** |
| Number of ratings | — | **70** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 41 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Michael Martin Abellana](https://appshunter.io/developer/1695378525) | [RIJIPUPS OU](https://appshunter.io/developer/1594002879) |

## What reviewers say

### OLPHA SkoolTech Plus

[App page](https://appshunter.io/ios/app/olpha-skooltech-plus/id6466695614)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Compressor ・ PDF Converter

[App page](https://appshunter.io/ios/app/pdf-compressor-pdf-converter/id6742428142)

Easily convert, scan, compress, and edit documents into PDFs. This tool offers smart camera features for accurate scanning, flexible compression options to save space, and the ability to merge or convert files. Keep your documents organized and secure with password protection.

**Highlights:** Convert photos, files, and scans to PDF, Smart camera for auto-detection and cropping, Compress PDFs with quality settings, Merge multiple PDFs, Convert PDFs to JPG or ZIP, Password protect sensitive documents, Edit and reorder PDF pages

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Converter PRO | $4.99 | per 7 days |
| PDF Converter PRO | $6.99 | per 7 days |
| PDF Converter PRO | $6.99 | per 7 days |
| PDF Converter PRO | $6.99 | per 7 days |
| PDF Converter PRO | $7.99 | per 7 days |
| PDF Converter PRO | $11.99 | per month |
| PDF Converter PRO | $19.99 | per month |
| PDF Converter PRO | $99.99 | per year |
| PDF Converter PRO | $119.99 | per year |


## Frequently asked questions

### Is OLPHA SkoolTech Plus free?

OLPHA SkoolTech Plus is free to download, with no in-app purchases.

### Is PDF Compressor ・ PDF Converter free?

PDF Compressor ・ PDF Converter is free to download, with in-app purchases available.

### Do OLPHA SkoolTech Plus or PDF Compressor ・ PDF Converter have ads?

PDF Compressor ・ PDF Converter shows ads; OLPHA SkoolTech Plus does not.

### Which is updated more often, OLPHA SkoolTech Plus or PDF Compressor ・ PDF Converter?

OLPHA SkoolTech Plus ships an update every 3 months, and PDF Compressor ・ PDF Converter every 5 days. Most recently, OLPHA SkoolTech Plus was updated on October 9, 2026 and PDF Compressor ・ PDF Converter on October 9, 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.*