Proton Authenticator vs Spacemail
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Proton Authenticator
Securely manage your two-factor authentication codes with an open-source, end-to-end encrypted authenticator app. It offers seamless cross-device syncing, effortless import from other apps, and robust backup options, all protected by strict Swiss privacy laws. Take control of your digital security with a trusted and private solution.
- End-to-end encrypted iCloud sync
- Effortless import from other authenticators
- Secure backup and export
- Swiss privacy by design
- Open source and transparent
- Offline support
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Get the authenticator trusted by millions — from Proton Mail, the world's largest encrypted email provider. Proton Authenticator is open source, end-to-end encrypted, and protected by strict Swiss privacy laws. Protect all your new accounts and strengthen security on your existing ones. Proton Authenticator keeps your 2FA codes secure, accessible, and completely private — with full control over where your data is stored. KEY FEATURES Local-First Storage:Your 2FA codes are stored entirely on your device, giving you complete control over your data. Effortless Import: Migrate from Google Authenticator, Authy, or any other app in seconds. Secure Backup & Export: Retain full control of your data with easy backup and restore options. Swiss Privacy by Design: Built under Switzerland's strongest data protection regulations. Open Source & Transparent: Auditable code. No tracking. No ads. Take control of your digital security with encryption you can trust. Free to use: No Proton account required, ad-free. Offline support: On mobile and desktop apps No other 2FA app provides this combination of security and privacy. Trusted by millions. Built by Proton. Take control of your digital security today. Terms of service: https://proton.me/legal/terms Learn more: https://proton.me
Spacemail
Manage your business email efficiently with this app. It offers a fast, intuitive interface with instant syncing across devices. Enjoy smart security features like 2FA and data encryption in an ad-free environment.
- Seamless business email management
- Smart security with 2FA and encryption
- Intuitive design and instant sync
- Intelligent dark mode
- Ad-free inbox
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Take your inbox anywhere with the Spacemail app. Enjoy seamless business email, smart security, and effortless customization in one powerful app. Get more done Email at speed with intuitive design and instant sync across all your devices. Your inbox your rules Decide when the lights go down with intelligent dark mode that adapts to your rhythm. Privacy built in Work without distractions in an ad-free inbox, locked down by 2FA and data storage encryption. Get started Get professional email that fits your budget. Choose your plan at spaceship.com, download the app, and sign in to use Spacemail on the go. Legal Privacy policy https://spaceship.com/privacy Terms of service https://spaceship.com/terms Follow us X (Twitter): https://x.com/Spaceship Instagram: https://www.instagram.com/spaceship/ Reddit: https://www.reddit.com/r/SpaceShip/
Screenshots
Verdict
The clearest difference is rating: Spacemail at 4.7 against Proton Authenticator's 4.4. On price, review sentiment, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
Spacemail holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 242 and 237 respectively. Written reviews complicate that: 56% of Proton Authenticator's written reviews are positive against 53% of Spacemail's, so the app with the better star average is not the one people write more warmly about.
Proton Authenticator ships an update weekly, Spacemail every 5 days. Both last shipped on September 22, 2026.
| Parameter | Proton Authenticator | Spacemail |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (242 ratings) | 4.7 (237 ratings) — better |
| Positive reviews | 56.3% of reviews — better | 53.3% of reviews |
| Number of ratings | 242 — better | 237 |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 119 MB | 160 MB |
| Age rating | 4+ | 17+ |
| Developer | Proton AG | Namecheap, Inc |
Customer experience
Proton Authenticator
Spacemail
Bugs and requests
Proton Authenticator
Reported bugs
4 issues- Sync/login loop on iPad
- 2FA input broken on non-iPhone devices
- Screen strobing on iPad
- Duplicate entries after import
Requested features
5 requests- PIN unlock for desktop
- Alphabetical sorting option
- Export function (not just Proton-specific backup)
- Native macOS app
- Option to hide item icons
Spacemail
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Proton Authenticator
No in-app purchases
Spacemail
No in-app purchases
Questions
Is Proton Authenticator free?
Is Spacemail free?
Which has better reviews, Proton Authenticator or Spacemail?
Do Proton Authenticator or Spacemail have ads?
Which is updated more often, Proton Authenticator or Spacemail?
Other comparisons
