# PDF Extender vs Lecture Recorder

The clearest difference is iOS requirement: PDF Extender at 17.0 against Lecture Recorder's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. PDF Extender sells 1 one-off in-app purchase and Lecture Recorder sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

PDF Extender ships an update every 3 weeks, Lecture Recorder every 11 days. The most recent releases landed on November 13, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | PDF Extender | Lecture Recorder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Size | 7 MB | 35 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SB Labs](https://appshunter.io/developer/6808787098) | [LOUIS MANUEL KLINKE](https://appshunter.io/developer/6815681809) |

## What reviewers say

### PDF Extender

[App page](https://appshunter.io/ios/app/pdf-extender/id6808786886)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro freischalten | $2.99 | one-time |


### Lecture Recorder

[App page](https://appshunter.io/ios/app/lecture-recorder-earnote/id6815681807)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kleines Trinkgeld | $1.99 | one-time |
| Mittleres Trinkgeld | $3.99 | one-time |
| Earnote PRO | $8.99 | one-time |


## Frequently asked questions

### Is PDF Extender free?

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

### Is Lecture Recorder free?

Lecture Recorder is free to download, with in-app purchases available.

### Do PDF Extender or Lecture Recorder have ads?

Neither PDF Extender nor Lecture Recorder shows ads.

### Which is updated more often, PDF Extender or Lecture Recorder?

PDF Extender ships an update every 3 weeks, and Lecture Recorder every 11 days. Most recently, PDF Extender was updated on November 13, 2026 and Lecture Recorder on November 6, 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.*