Proton Drive vs CISA Smart Access
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Proton Drive
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.
- End-to-end encrypted storage
- Automatic photo and video backup
- Secure link sharing with passwords
- PIN/biometric protection
- Offline file access
- File version history
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Proton Drive provides private and secure storage for your files and photos. With Proton Drive you can protect important documents, automatically back up cherished memories, and access your content across devices. All Proton Drive accounts come with 5 GB of free storage and you can upgrade to up to 1 TB of storage at any time. Trusted by over 100 million users, Proton Drive gives you an end-to-end encrypted vault where only you—and the people you choose—can access your files and photos. Proton Drive features: - Secure storage - Get 5 GB of free encrypted cloud storage with no file size limits. - Share content using secure links with password and expiration settings. - Keep your files and photos safe with PIN or biometric protection. - Access important files and photos even if your device is lost or damaged. Easy to use - Automatically back up photos and videos in their original quality. - Securely organize your cherished memories into albums. - Rename, move, and delete your personal files securely within the app. - Create, edit and collaborate on docs. - View your important files and memories – even when offline. - Restore files with version history. Advanced privacy - Stay private with end-to-end encryption – even Proton can’t view your content. - Secure your metadata, including filenames, sizes, and modification dates. - Protect your content with Swiss privacy laws, the strongest in the world. - Trust in our open-source code that is public and verified by experts. Secure up to 5 GB of free storage for your personal files, photos, and videos with Proton Drive. Stay ahead with our releases and updates by connecting with us! - LinkedIn: https://www.linkedin.com/company/protonprivacy - Instagram: https://www.instagram.com/protonprivacy/ - X/Twitter: https://x.com/ProtonDrive - Reddit: https://www.reddit.com/r/ProtonDrive/ Terms of Service: https://proton.me/legal/terms Privacy Policy: https://proton.me/legal/privacy
CISA Smart Access
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CISA Smart Access is the app that allows you to access your hotel room, residence or workplace with your smartphone. To obtain the digital key, simply click on the link you will receive from the facility manager. The digital key is securely stored within the app and once downloaded it can be used to open a door even without an internet connection. With the app you can access any type of gate, from the parking lot, to the entrance to the room, office and service areas. To use the key, simply approach the gate and click the padlock image that appears on the main screen. You can download digital keys for more than one facility at the same time and check the list of authorized doors at any time. CISA, a brand of Allegion, is one of Europe’s leading providers of security and access control systems. Since its foundation in 1926, it plays a primary role in satisfying the security requirements of any type of building with dedicated electro-mechanical solutions, which enable real-time access control and management. Whether it’s residential homes or business centers, schools or health and hospitality facilities, safety is our main concern. For more, visit cisa.com; YouTube; LinkedIn and Facebook.
Screenshots
Verdict
The clearest difference is in-app purchases: CISA Smart Access at none against Proton Drive's 9. CISA Smart Access also leads on iOS requirement (14.0 vs 16.0). Proton Drive's advantage is update cadence (fortnightly vs every 3 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Proton Drive sells 9 in-app purchases, starting at $0.99 per month. CISA Smart Access asks for nothing beyond the download.
Proton Drive ships an update fortnightly, CISA Smart Access every 3 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | Proton Drive | CISA Smart Access |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (1.3K ratings) — better | — |
| Positive reviews | 37.0% of reviews | — |
| Number of ratings | 1.3K — better | — |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 235 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Proton AG | CISA S.p.A. |
Bugs and requests
Proton Drive
Reported bugs
4 issues- Frequent crashes and errors
- Inconsistent file syncing across devices
- Unable to access files uploaded from desktop
- Issues with offline file access
Requested features
4 requests- Automatic photo/video backup
- Ability to edit documents within the app
- Seamless integration with other apps for file sharing
- Linux desktop client
CISA Smart Access
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Proton Drive
- Drive Lite 1 month$0.991 Month
- Drive Plus 1 month$4.991 Month
- Drive Plus 1 TB (1 month)$9.991 Month
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- Proton Unlimited 1 month$14.991 Month
- Drive Plus 1 year$47.901 Year
- Drive Plus 1 TB (1 year)$95.991 Year
- Proton Unlimited 1 year$119.001 Year
- Drive Plus$59.99
- Proton Unlimited$149.99
CISA Smart Access
No in-app purchases
Questions
Is Proton Drive free?
Is CISA Smart Access free?
Do Proton Drive or CISA Smart Access have ads?
Which is updated more often, Proton Drive or CISA Smart Access?
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