# Autotrex vs Light PDF

The clearest difference is ads: Autotrex at none against Light PDF's shown. Light PDF's advantage is update cadence (every 5 days vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Autotrex ships an update every 6 months, Light PDF every 5 days. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Autotrex | Light PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 5 days** |
| Size | 52 MB | 33 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LEVEL, s.r.o.](https://appshunter.io/developer/1125317999) | [其达 林](https://appshunter.io/developer/1781276360) |

## What reviewers say

### Autotrex

[App page](https://appshunter.io/ios/app/autotrex/id6449243954)

**Features:** macOS Compatibility

**In-app purchases:** none


### Light PDF

[App page](https://appshunter.io/ios/app/light-pdf-lite-pdf-reader/id6739862474)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Autotrex free?

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

### Is Light PDF free?

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

### Do Autotrex or Light PDF have ads?

Light PDF shows ads; Autotrex does not.

### Which is updated more often, Autotrex or Light PDF?

Autotrex ships an update every 6 months, and Light PDF every 5 days. Most recently, Autotrex was updated on October 1, 2026 and Light PDF on October 2, 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.*