# Study852 vs Proton Authenticator

The clearest difference is rating: Study852 at 5.0 against Proton Authenticator's 4.4. Proton Authenticator's advantage is in-app purchases (none vs 1) and ratings volume (242 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Study852 sells 1 one-off in-app purchase. Proton Authenticator asks for nothing beyond the download.

Study852 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Proton Authenticator has 242 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | Study852 | Proton Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/study852/id6736966480/reviews)** | [4.4 (242 ratings)](https://appshunter.io/ios/app/proton-authenticator/id6741758667/reviews) |
| Number of ratings | 2 | **242** |
| Positive reviews | — | 55.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 139 MB | 119 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Daisydoor](https://appshunter.io/developer/1755831368) | [Proton AG](https://appshunter.io/developer/979659484) |

## What reviewers say

### Study852

[App page](https://appshunter.io/ios/app/study852/id6736966480)

This productivity tool features a timer that plays an 852hz pure tone while active. It's designed to enhance focus during study sessions and can be upgraded for extended timer durations.

**Highlights:** 852hz pure tone playback, Timer for focus sessions, Pause and stop functionality, Extended timer options (PRO), No data collection

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | one-time |


### Proton Authenticator

[App page](https://appshunter.io/ios/app/proton-authenticator/id6741758667)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Cross-platform support
- 🔒 Secure cloud sync
- 👍 Easy import from other authenticators
- 🚀 Convenient 'next' feature for codes

**What reviewers complain about**

- 🐛 Buggy UI (scrolling jitters, random sorting)
- 👎 Lack of customization options (pin favorites, change icons)
- 🐛 Sync/login issues on iPad

**Reported bugs**

- Sync/login loop on iPad
- 2FA input broken on non-iPhone devices
- Screen strobing on iPad
- Duplicate entries after import

**Requested features**

- PIN unlock for desktop
- Alphabetical sorting option
- Export function (not just Proton-specific backup)
- Native macOS app
- Option to hide item icons


## Frequently asked questions

### Is Study852 free?

Study852 is free to download, with in-app purchases available.

### Is Proton Authenticator free?

Proton Authenticator is free to download, with no in-app purchases.

### Which has better reviews, Study852 or Proton Authenticator?

Study852 is rated higher. Study852 averages 5.0 out of 5 from 2 ratings, while Proton Authenticator averages 4.4 from 242 ratings.

### Do Study852 or Proton Authenticator have ads?

Neither Study852 nor Proton Authenticator shows ads.

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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.*