# Offline PDF Editor vs STLLens

The clearest difference is price: Offline PDF Editor at Free against STLLens's $0.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Offline PDF Editor is free to download; STLLens costs $0.99 up front. Offline PDF Editor sells 4 in-app purchases, starting at $1.99 per 7 days and STLLens sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Offline PDF Editor ships an update every 3 weeks, STLLens fortnightly. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Offline PDF Editor | STLLens |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/offline-pdf-editor-properpdf/id6760956540/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 40 MB | 60 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHIRANJEEVI PANDEY](https://appshunter.io/developer/1887013698) | [楠楠 李](https://appshunter.io/developer/1790338557) |

## What reviewers say

### Offline PDF Editor

[App page](https://appshunter.io/ios/app/offline-pdf-editor-properpdf/id6760956540)

This app offers a comprehensive suite of PDF editing tools that operate entirely offline on your device. It allows you to merge, split, compress, convert, sign, and fill PDFs without needing an internet connection or uploading your files to the cloud. An AI chat feature is also available for summarizing and querying your documents locally.

**Highlights:** 100% Offline PDF Editing, Merge, Split, Compress PDFs, Convert PDF to Image, Sign and Fill Forms, On-device AI Chat, Password Protection, Zero Cloud Uploads

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProperPDF Pro — Weekly | $1.99 | per 7 days |
| ProperPDF Pro — Monthly | $3.99 | per month |
| ProperPDF Pro — Annual | $29.99 | per year |
| ProperPDF Pro - Lifetime Access | $79.99 | one-time |


### STLLens

[App page](https://appshunter.io/ios/app/stllens-3d-model-viewer/id6787116955)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month Vip | $7.99 | per month |
| Year Vip | $14.99 | per year |
| LifeTime | $19.99 | one-time |


## Frequently asked questions

### Is Offline PDF Editor free?

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

### Is STLLens free?

STLLens costs $0.99, and also offers in-app purchases.

### Do Offline PDF Editor or STLLens have ads?

Neither Offline PDF Editor nor STLLens shows ads.

### Which is updated more often, Offline PDF Editor or STLLens?

Offline PDF Editor ships an update every 3 weeks, and STLLens fortnightly. Most recently, Offline PDF Editor was updated on October 19, 2026 and STLLens on October 15, 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.*