# GoPdf.io vs Auth Sync

The clearest difference is in-app purchases: Auth Sync at none against GoPdf.io's 2. GoPdf.io's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GoPdf.io sells 2 in-app purchases, starting at $9.99 per month. Auth Sync asks for nothing beyond the download.

GoPdf.io ships an update every 2 weeks, Auth Sync every 3 months. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | GoPdf.io | Auth Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/gopdfio/id6468447409/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 59 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KAYA SMART LLC](https://appshunter.io/developer/1641097768) | [DREAMER NETWORK CO., LTD](https://appshunter.io/developer/1613694335) |

## What reviewers say

### GoPdf.io

[App page](https://appshunter.io/ios/app/gopdfio/id6468447409)

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to scan, fill, sign, convert, merge, protect, and compress PDFs, streamlining document workflows.

**Highlights:** Scan documents to PDF, Fill and sign PDF forms, Convert PDF to JPG, Convert PDF to Word, Merge multiple PDFs, Password protect PDFs, Compress PDF files

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $99.99 | per year |


### Auth Sync

[App page](https://appshunter.io/ios/app/auth-sync-safe-and-secure-2fa/id6751329938)

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

**In-app purchases:** none


## Frequently asked questions

### Is GoPdf.io free?

GoPdf.io is free to download, with in-app purchases available.

### Is Auth Sync free?

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

### Do GoPdf.io or Auth Sync have ads?

Neither GoPdf.io nor Auth Sync shows ads.

### Which is updated more often, GoPdf.io or Auth Sync?

GoPdf.io ships an update every 2 weeks, and Auth Sync every 3 months. Most recently, GoPdf.io was updated on October 1, 2026 and Auth Sync on October 12, 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.*