# Proton Drive vs OpenDocument Reader

The clearest difference is in-app purchases: OpenDocument Reader at none against Proton Drive's 9. OpenDocument Reader also leads on rating (4.5 vs 4.1). Proton Drive's advantage is ads (none vs shown) and update cadence (fortnightly vs every 5 weeks). On price, review sentiment, ratings volume and device support there is nothing between them.

Both are free to download. Proton Drive sells 9 in-app purchases, starting at $0.99 per month. OpenDocument Reader asks for nothing beyond the download.

OpenDocument Reader holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 1.2K and 902 respectively. Written reviews complicate that: 37% of Proton Drive's written reviews are positive against 30% of OpenDocument Reader's, so the app with the better star average is not the one people write more warmly about.

Proton Drive ships an update fortnightly, OpenDocument Reader every 5 weeks. The most recent releases landed on September 28, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Proton Drive | OpenDocument Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (1.2K ratings)](https://appshunter.io/ios/app/proton-drive-cloud-storage/id1509667851/reviews) | **[4.5 (902 ratings)](https://appshunter.io/ios/app/opendocument-reader-view-odt/id1510195065/reviews)** |
| Number of ratings | **1.2K** | 902 |
| Positive reviews | **36.8% of reviews** | 30.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 235 MB | 10 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Proton AG](https://appshunter.io/developer/979659484) | [Stefl und Taschauer OG](https://appshunter.io/developer/1452061742) |

## What reviewers say

### Proton Drive

[App page](https://appshunter.io/ios/app/proton-drive-cloud-storage/id1509667851)

Securely store and back up your files and photos with end-to-end encryption. Access your content across devices, share securely with password protection, and enjoy peace of mind with Swiss privacy laws. Offers free storage with upgrade options.

**Highlights:** End-to-end encrypted storage, Automatic photo and video backup, Secure link sharing with passwords, PIN/biometric protection, Offline file access, File version history

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Drive Lite 1 month | $0.99 | per month |
| Drive Plus 1 month | $4.99 | per month |
| Drive Plus 1 TB (1 month) | $9.99 | per month |
| Proton Unlimited 1 month | $14.99 | per month |
| Drive Plus 1 year | $47.90 | per year |
| Drive Plus 1 TB (1 year) | $95.99 | per year |
| Proton Unlimited 1 year | $119.00 | per year |
| Drive Plus | $59.99 | one-time |
| Proton Unlimited | $149.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient
- 🔒 Secure and private
- 👍 Simple and intuitive UI
- 💡 Integrated with iOS Files app

**What reviewers complain about**

- 🐛 Buggy and unreliable
- 🔋 High battery consumption
- 📥 Slow upload/download speeds
- 🗂️ Lacking key features like search and sorting

**Reported bugs**

- Frequent crashes and errors
- Inconsistent file syncing across devices
- Unable to access files uploaded from desktop
- Issues with offline file access

**Requested features**

- Automatic photo/video backup
- Ability to edit documents within the app
- Seamless integration with other apps for file sharing
- Linux desktop client


### OpenDocument Reader

[App page](https://appshunter.io/ios/app/opendocument-reader-view-odt/id1510195065)

View and edit ODT, ODS, and ODP files on your mobile device. Seamlessly open documents from cloud storage or your device's file explorer, with support for password-protected files and keyword searching. Enjoy offline access and basic editing capabilities.

**Highlights:** View ODT, ODS, ODP files, Basic document editing, Open from cloud storage, Password-protected document support, Keyword search and highlighting, Offline functionality, Print documents

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast file opening
- 💡 Good ODT reader

**What reviewers complain about**

- 🐛 Corrupted files upon editing
- 🐛 Presentation issues with formatting and features
- 🐛 Inability to edit spreadsheets properly

**Reported bugs**

- Corrupted files
- Formatting issues
- Crashes and app closing issues

**Requested features**

- Dark mode option
- Better spreadsheet editing capabilities
- Improved file format compatibility


## Frequently asked questions

### Is Proton Drive free?

Proton Drive is free to download, with in-app purchases available.

### Is OpenDocument Reader free?

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

### Which has better reviews, Proton Drive or OpenDocument Reader?

OpenDocument Reader is rated higher. Proton Drive averages 4.1 out of 5 from 1.2K ratings, while OpenDocument Reader averages 4.5 from 902 ratings.

### Do Proton Drive or OpenDocument Reader have ads?

OpenDocument Reader shows ads; Proton Drive does not.

### Which is updated more often, Proton Drive or OpenDocument Reader?

Proton Drive ships an update fortnightly, and OpenDocument Reader every 5 weeks. Most recently, Proton Drive was updated on September 28, 2026 and OpenDocument Reader on September 27, 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.*