# PDF Compressor vs AI Note Taker

The clearest difference is ads: AI Note Taker at none against PDF Compressor's shown. PDF Compressor's advantage is update cadence (fortnightly vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Compressor sells 4 in-app purchases, starting at $5.99 per 7 days and AI Note Taker sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Compressor ships an update fortnightly, AI Note Taker every 3 months. The most recent releases landed on September 18, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | PDF Compressor | AI Note Taker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (58 ratings)](https://appshunter.io/ios/app/ai-note-taker-audio-to-text/id6749573951/reviews)** |
| Number of ratings | — | **58** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 26 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zahid Hussain](https://appshunter.io/developer/1825488742) | [Janis Berzins](https://appshunter.io/developer/1844307915) |

## What reviewers say

### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-merge-split/id6748366278)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $5.99 | per 7 days |
| Monthly Plan | $12.99 | per month |
| Yearly Plan | $24.99 | per year |
| Yearly Trial Plan | $29.99 | per year |


### AI Note Taker

[App page](https://appshunter.io/ios/app/ai-note-taker-audio-to-text/id6749573951)

Instantly convert spoken words into organized, searchable text. This intelligent audio companion transcribes meetings, lectures, and thoughts with high accuracy, offering summarization and easy sharing.

**Highlights:** Speech to text conversion, Intelligent summarization, Universal language support, One-tap sharing, Real-time processing, Adaptive learning for voice

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Note Taker Weekly Sale | $5.99 | per 7 days |
| AI Note Taker Weekly | $7.99 | per 7 days |
| AI Note Taker Monthly | $19.99 | per month |


## Frequently asked questions

### Is PDF Compressor free?

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

### Is AI Note Taker free?

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

### Do PDF Compressor or AI Note Taker have ads?

PDF Compressor shows ads; AI Note Taker does not.

### Which is updated more often, PDF Compressor or AI Note Taker?

PDF Compressor ships an update fortnightly, and AI Note Taker every 3 months. Most recently, PDF Compressor was updated on September 18, 2026 and AI Note Taker on August 26, 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.*