Comparison

Periscope by Duet vs Proton Authenticator & 2FA

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Periscope by Duet

Access your home internet securely from anywhere in the world. This app provides end-to-end encryption and smart connectivity to bypass network restrictions, allowing you to reach your home devices and maintain privacy on public Wi-Fi.

Highlights
  • Connect to home network globally
  • WireGuard protocol
  • End-to-end encryption
  • Smart connectivity for restrictive networks
  • Real-time connection stats
  • Simple setup
Features
Read full description

Periscope — A VPN to Your Own Home Periscope is a VPN that routes your traffic through your own home network instead of a rented data center. You keep one device running there — an Apple TV, a Mac or a PC — and your iPhone and iPad connect back to it from anywhere in the world. That one difference changes what a VPN is for. Your traffic leaves from your own address, so banks, local services and your own devices see the connection they expect. There is no country list to choose from, because there is only one exit: your home. PRIVATE BY DESIGN Your connection is end-to-end encrypted using WireGuard, one of the most secure VPN protocols available. This means your traffic is always private — even we can't see what you're doing. Whether you connect directly or through our relay servers, your data remains yours alone. WORKS FROM ANYWHERE Hotel WiFi blocking VPN connections? Challenging airport network? Periscope's smart connectivity automatically uses direct connection, NAT traversal, or relay fallback to establish a reliable tunnel — no manual configuration needed. FEATURES • Connect to your home network from anywhere in the world • Built on WireGuard — fast, modern, and battery-efficient • End-to-end encryption keeps your traffic private • Smart connectivity that works on restrictive networks • Real-time connection stats and diagnostics • Optimized for iPhone and iPad PERFECT FOR • Accessing your home network services while traveling • Connecting to devices on your home network • Keeping your browsing on your own trusted connection • Privacy-conscious travelers who don't trust public WiFi SIMPLE SETUP Install Periscope on the device that stays home and choose "Server". Install it on the iPhone and iPad you travel with, sign in with the same account, and tap connect. No admin console, no config files, no network settings to learn. FLEXIBLE PLANS Monthly or annual subscriptions. Start with a free trial. Travel the world. Stay connected to home. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Proton Authenticator & 2FA

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.

Highlights
  • 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
Features
Read full description

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

Screenshots

Periscope by Duet3 screens
Proton Authenticator & 2FA4 screens

Verdict

The call

The clearest difference is review sentiment: Periscope by Duet at 100% against Proton Authenticator & 2FA's 58%. Periscope by Duet also leads on rating (5.0 vs 4.6). Proton Authenticator & 2FA's advantage is in-app purchases (none vs 2) and ratings volume (514 vs 4). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Periscope by Duet sells 2 in-app purchases, starting at $2.99 per month. Proton Authenticator & 2FA asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Periscope by Duet holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Proton Authenticator & 2FA has 514 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Periscope by Duet's written reviews are positive against 58% of Proton Authenticator & 2FA's.

UpkeepUpdate frequency

Periscope by Duet ships an update every 3 weeks, Proton Authenticator & 2FA weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard6 real differences · 4 level
Periscope by Duet versus Proton Authenticator & 2FA: the parameters behind the verdict, then further details
ParameterPeriscope by DuetProton Authenticator & 2FA
PriceFreeFree
Rating5.0 (4 ratings) — better4.6 (514 ratings)
Positive reviews100.0% of reviews — better57.6% of reviews
Number of ratings4514 — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, Apple TViPhone, iPad, Apple Watch
Requires iOS17.017.0
Further details — not scored
Size37 MB120 MB
Age rating4+4+
DeveloperDuet, Inc.Proton AG

Customer experience

Periscope by Duet

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Proton Authenticator & 2FA

All ratings314 ratings
Positive82.8%
Neutral6.7%
Negative10.5%
Written reviews255 reviews
Positive57.6%
Neutral19.2%
Negative23.1%

Bugs and requests

Periscope by Duet

Not enough reviews yet to summarise bugs or requests.

Proton Authenticator & 2FA

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

In-app purchases

2 purchases

Periscope by Duet

Subscriptions2
  • Periscope Monthly7 Days trial$2.991 Month
  • Periscope7 Days trial$19.991 Year
None

Proton Authenticator & 2FA

No in-app purchases

Questions

Is Periscope by Duet free?
Periscope by Duet is free to download, with in-app purchases available.
Is Proton Authenticator & 2FA free?
Proton Authenticator & 2FA is free to download, with no in-app purchases.
Which has better reviews, Periscope by Duet or Proton Authenticator & 2FA?
Periscope by Duet is rated higher. Periscope by Duet averages 5.0 out of 5 from 4 ratings, while Proton Authenticator & 2FA averages 4.6 from 514 ratings.
Do Periscope by Duet or Proton Authenticator & 2FA have ads?
Neither Periscope by Duet nor Proton Authenticator & 2FA shows ads.
Which is updated more often, Periscope by Duet or Proton Authenticator & 2FA?
Periscope by Duet ships an update every 3 weeks, and Proton Authenticator & 2FA weekly. Most recently, Periscope by Duet was updated on October 24, 2026 and Proton Authenticator & 2FA on October 28, 2026.

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