# Key for Tesla vs Authenticator App

The clearest difference is price: Authenticator App at Free against Key for Tesla's $3.99. Authenticator App also leads on rating (5.0 vs 3.3) and review sentiment (100% vs 69%). Key for Tesla's advantage is ratings volume (12 vs 1) and iOS requirement (13.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Authenticator App is free to download; Key for Tesla costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Authenticator App holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Key for Tesla has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 69% of Key for Tesla's written reviews are positive against 100% of Authenticator App's.

Key for Tesla ships an update every 3 months, Authenticator App every 5 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Key for Tesla | Authenticator App |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.3 (12 ratings)](https://appshunter.io/ios/app/key-for-tesla-iwatch-and-phone/id6480593266/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/authenticator-app-twoauth/id6799068050/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 68.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Paid | **Free** |
| Size | 37 MB | 3 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Jiyou Network Technology Company Limited](https://appshunter.io/developer/1593657078) | [Hangzhou JoyTime Technology Co., Ltd.](https://appshunter.io/developer/1562298447) |

## What reviewers say

### Key for Tesla

[App page](https://appshunter.io/ios/app/key-for-tesla-iwatch-and-phone/id6480593266)

This app allows you to use your phone as a key for compatible Tesla vehicles. It offers a secure Bluetooth connection without requiring Tesla ID login, supporting multiple vehicles.

**Highlights:** Bluetooth car key functionality, No Tesla ID login needed, Supports Model 3, Y, S, X (post-2021), Bind multiple vehicles, Secure connection

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

**In-app purchases:** none


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-twoauth/id6799068050)

This app generates verification codes for two-factor and multi-factor authentication. It offers a secure, offline experience with no data collection or ads, serving as a robust alternative to other authenticator apps.

**Highlights:** Fully offline operation, Private key storage, Zero data collection, Import accounts from Google Authenticator, Scan QR codes or enter keys manually, Instant code refresh with previews, Bulk export options

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Key for Tesla free?

Key for Tesla costs $3.99, with no in-app purchases.

### Is Authenticator App free?

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

### Which has better reviews, Key for Tesla or Authenticator App?

Authenticator App is rated higher. Key for Tesla averages 3.3 out of 5 from 12 ratings, while Authenticator App averages 5.0 from 1 ratings.

### Do Key for Tesla or Authenticator App have ads?

Neither Key for Tesla nor Authenticator App shows ads.

### Which is updated more often, Key for Tesla or Authenticator App?

Key for Tesla ships an update every 3 months, and Authenticator App every 5 days. Most recently, Key for Tesla was updated on November 8, 2026 and Authenticator App on November 6, 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.*