# Proton Authenticator vs Vector Space AI

The clearest difference is review sentiment: Vector Space AI at 100% against Proton Authenticator's 56%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Proton Authenticator ships an update weekly, Vector Space AI every 4 days. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Proton Authenticator | Vector Space AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (242 ratings)](https://appshunter.io/ios/app/proton-authenticator/id6741758667/reviews)** | — |
| Number of ratings | **242** | — |
| Positive reviews | 56.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 119 MB | 34 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Proton AG](https://appshunter.io/developer/979659484) | [Voila Tech K.K](https://appshunter.io/developer/1769335627) |

## What reviewers say

### 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


### Vector Space AI

[App page](https://appshunter.io/ios/app/vector-space-ai/id6746352865)

This app offers a fast, private AI companion that runs locally on your device, providing instant responses for writing, brainstorming, and coding. It also allows seamless switching to cloud-based AI for more advanced queries.

**Highlights:** Runs locally on device, Optional ChatGPT API connection, Modern and clean interface, Instant response times, Complete user data privacy, Seamless mode switching

**Features:** Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is Proton Authenticator free?

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

### Is Vector Space AI free?

Vector Space AI is free to download, with no in-app purchases.

### Do Proton Authenticator or Vector Space AI have ads?

Neither Proton Authenticator nor Vector Space AI shows ads.

### Which is updated more often, Proton Authenticator or Vector Space AI?

Proton Authenticator ships an update weekly, and Vector Space AI every 4 days. Most recently, Proton Authenticator was updated on September 22, 2026 and Vector Space AI on September 7, 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.*