# Optimal Authenticator vs BlindSPOT

The clearest difference is rating: Optimal Authenticator at 3.0 against BlindSPOT's 1.8. BlindSPOT's advantage is iOS requirement (8.0 vs 15.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

Optimal Authenticator holds the better App Store score, 3.0 against 1.8. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Optimal Authenticator ships an update every 3 months, BlindSPOT every 4 months. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Optimal Authenticator | BlindSPOT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/optimal-authenticator/id1217402923/reviews)** | [1.8 (5 ratings)](https://appshunter.io/ios/app/blindspot-360/id1336339117/reviews) |
| Number of ratings | 4 | **5** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 80 MB | 17 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optimal IdM](https://appshunter.io/developer/1050742329) | [庆尧 曾](https://appshunter.io/developer/1160057301) |

## What reviewers say

### Optimal Authenticator

[App page](https://appshunter.io/ios/app/optimal-authenticator/id1217402923)

This app provides a secure way to verify your identity for accessing other applications. It uses two-factor authentication via push notifications or verification codes, and allows organizations to register trusted devices for sign-in requests.

**Highlights:** Two-factor authentication, Push notification verification, On-app verification codes, Trusted device registration, Secure identity verification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### BlindSPOT

[App page](https://appshunter.io/ios/app/blindspot-360/id1336339117)

View live streams, capture photos, and record video from a connected camera. Control camera rotation and zoom remotely. Access saved media within the app or your phone's gallery.

**Highlights:** Live streaming view, Remote PTZ control, Photo and video recording, Electronic zoom, In-app media album

**In-app purchases:** none


## Frequently asked questions

### Is Optimal Authenticator free?

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

### Is BlindSPOT free?

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

### Which has better reviews, Optimal Authenticator or BlindSPOT?

Optimal Authenticator is rated higher. Optimal Authenticator averages 3.0 out of 5 from 4 ratings, while BlindSPOT averages 1.8 from 5 ratings.

### Do Optimal Authenticator or BlindSPOT have ads?

Neither Optimal Authenticator nor BlindSPOT shows ads.

### Which is updated more often, Optimal Authenticator or BlindSPOT?

Optimal Authenticator ships an update every 3 months, and BlindSPOT every 4 months. Most recently, Optimal Authenticator was updated on November 2, 2026 and BlindSPOT on October 29, 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.*