# Spectrum Logbook vs PDF Compressor Offline

The clearest difference is iOS requirement: Spectrum Logbook at 13.0 against PDF Compressor Offline's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Spectrum Logbook sells 3 in-app purchases, starting at $4.99 per month and PDF Compressor Offline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Spectrum Logbook | PDF Compressor Offline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 99 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sifat Shahariar](https://appshunter.io/developer/1883019425) | [Akif Acet](https://appshunter.io/developer/1885350430) |

## What reviewers say

### Spectrum Logbook

[App page](https://appshunter.io/ios/app/spectrum-logbook/id6760183624)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $59.99 | one-time |


### PDF Compressor Offline

[App page](https://appshunter.io/ios/app/pdf-compressor-offline/id6770129372)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $9.99 | one-time |


## Frequently asked questions

### Is Spectrum Logbook free?

Spectrum Logbook is free to download, with in-app purchases available.

### Is PDF Compressor Offline free?

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

### Do Spectrum Logbook or PDF Compressor Offline have ads?

Neither Spectrum Logbook nor PDF Compressor Offline shows ads.

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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.*