# Polaris PDF Viewer vs PDF Vault

The clearest difference is review sentiment: PDF Vault at 50% against Polaris PDF Viewer's 0%. PDF Vault also leads on rating (5.0 vs 4.4). Polaris PDF Viewer's advantage is in-app purchases (none vs 2) and ratings volume (49 vs 3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PDF Vault sells 2 in-app purchases, starting at $4.99 per month. Polaris PDF Viewer asks for nothing beyond the download.

PDF Vault holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Polaris PDF Viewer has 49 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Polaris PDF Viewer's written reviews are positive against 50% of PDF Vault's.

Polaris PDF Viewer ships an update every 5 weeks, PDF Vault every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Polaris PDF Viewer | PDF Vault |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (49 ratings)](https://appshunter.io/ios/app/polaris-pdf-viewer/id1495005441/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-vault-document-app/id1599303874/reviews)** |
| Number of ratings | **49** | 3 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 94 MB | 4 MB |
| Requires iOS | **10.0** | 18.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Polaris Office Corp.](https://appshunter.io/developer/380275428) | [Dmytro Skorokhod](https://appshunter.io/developer/994177751) |

## What reviewers say

### Polaris PDF Viewer

[App page](https://appshunter.io/ios/app/polaris-pdf-viewer/id1495005441)

View and manage PDF documents on your mobile device with a stable and optimized viewer. Offers features like text-to-speech, annotation tools, and cloud integration for efficient document handling.

**Highlights:** Mobile-optimized PDF viewer, Text-to-speech function, Annotation and drawing tools, Cloud service integration, Night mode and screen dimming, Print PDF documents

**Features:** Vision Pro support

**In-app purchases:** none


### PDF Vault

[App page](https://appshunter.io/ios/app/pdf-vault-document-app/id1599303874)

This ultra-lightweight application offers a comprehensive suite of PDF tools, including text-to-speech functionality, digital signing, document scanning, organization, and instant translation. It's designed for efficiency and ease of use, saving device space while enhancing productivity for work, study, or personal tasks.

**Highlights:** Text-to-speech for PDFs, Digital document signing, Scan paper documents to PDF, Organize and manage PDF files, Instant document translation, Ultra-lightweight and fast

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mox PDF Tool Unlimited Monthly | $4.99 | per month |
| Mox PDF Tool Unlimited Annually | $19.99 | per year |


## Frequently asked questions

### Is Polaris PDF Viewer free?

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

### Is PDF Vault free?

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

### Which has better reviews, Polaris PDF Viewer or PDF Vault?

PDF Vault is rated higher. Polaris PDF Viewer averages 4.4 out of 5 from 49 ratings, while PDF Vault averages 5.0 from 3 ratings.

### Do Polaris PDF Viewer or PDF Vault have ads?

Neither Polaris PDF Viewer nor PDF Vault shows ads.

### Which is updated more often, Polaris PDF Viewer or PDF Vault?

Polaris PDF Viewer ships an update every 5 weeks, and PDF Vault every 3 weeks. Most recently, Polaris PDF Viewer was updated on October 24, 2026 and PDF Vault on October 24, 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.*