# Key for Tesla vs EMX RFID

The clearest difference is price: EMX RFID at Free against Key for Tesla's $1.99. Key for Tesla's advantage is update cadence (every 5 weeks vs every 8 months) and chart position (#150 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

EMX RFID is free to download; Key for Tesla costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Key for Tesla ships an update every 5 weeks, EMX RFID every 8 months. The most recent releases landed on September 16, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | Key for Tesla | EMX RFID |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.1 (13 ratings)](https://appshunter.io/ios/app/key-for-tesla/id1202595802/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 55.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 8 months |
| Monetization | Paid | — |
| Best chart rank | **#150** | — |
| Size | 10 MB | 58 MB |
| Requires iOS | 15.0 | **14.2** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joao Nunes](https://appshunter.io/developer/508236936) | [EMX Industries Inc](https://appshunter.io/developer/791759563) |

## What reviewers say

### Key for Tesla

[App page](https://appshunter.io/ios/app/key-for-tesla/id1202595802)

**Currently charting:** #150 Top Paid · Utilities (US App Store)

Control your Tesla vehicle directly from your Apple Watch or iPhone. Unlock, lock, start, and manage climate settings with a single tap or voice command. Monitor battery status and charging progress conveniently.

**Highlights:** Unlock and start Tesla with one tap, Lock car with a tap, Today extension for quick access, Siri support for commands, Apple Watch climate control, Check battery status and charging, Watch Complications for quick info

**Features:** Siri integration, Apple Watch app, Vision Pro support

**In-app purchases:** none


### EMX RFID

[App page](https://appshunter.io/ios/app/emx-rfid/id6502665357)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Key for Tesla free?

Key for Tesla costs $1.99, with no in-app purchases.

### Is EMX RFID free?

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

### Do Key for Tesla or EMX RFID have ads?

Neither Key for Tesla nor EMX RFID shows ads.

### Which is updated more often, Key for Tesla or EMX RFID?

Key for Tesla ships an update every 5 weeks, and EMX RFID every 8 months. Most recently, Key for Tesla was updated on September 16, 2026 and EMX RFID on May 18, 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.*