# Comsign Authenticator vs Sentry Owl for Tesla

The clearest difference is in-app purchases: Comsign Authenticator at none against Sentry Owl for Tesla's 1. Sentry Owl for Tesla's advantage is update cadence (weekly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sentry Owl for Tesla sells 1 in-app purchase, starting at $8.99 per month. Comsign Authenticator asks for nothing beyond the download.

Comsign Authenticator ships an update every 4 months, Sentry Owl for Tesla weekly. Both last shipped on October 29, 2026.

## The numbers

| Metric | Comsign Authenticator | Sentry Owl for Tesla |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 39 MB | 43 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Comsign Ltd.](https://appshunter.io/developer/1438606872) | [Benjamin Taylor](https://appshunter.io/developer/6799185984) |

## What reviewers say

### Comsign Authenticator

[App page](https://appshunter.io/ios/app/comsign-authenticator/id1438606873)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentry Owl for Tesla

[App page](https://appshunter.io/ios/app/sentry-owl-for-tesla/id6799185982)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentry Owl Pro | $8.99 | per month |


## Frequently asked questions

### Is Comsign Authenticator free?

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

### Is Sentry Owl for Tesla free?

Sentry Owl for Tesla is free to download, with in-app purchases available.

### Do Comsign Authenticator or Sentry Owl for Tesla have ads?

Neither Comsign Authenticator nor Sentry Owl for Tesla shows ads.

### Which is updated more often, Comsign Authenticator or Sentry Owl for Tesla?

Comsign Authenticator ships an update every 4 months, and Sentry Owl for Tesla weekly. Most recently, Comsign Authenticator was updated on October 29, 2026 and Sentry Owl for Tesla 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.*