# Key for Tesla vs SundialEV

The clearest difference is price: SundialEV at Free against Key for Tesla's $1.99. SundialEV also leads on review sentiment (100% vs 55%) and rating (5.0 vs 2.9). Key for Tesla's advantage is device support (3 vs 1). On ratings volume, ads, in-app purchases and iOS requirement there is nothing between them.

SundialEV 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.

SundialEV holds the better App Store score, 5.0 against 2.9. Both are backed by a comparable volume of ratings — 14 and 11 respectively. Written reviews point the same way: 55% of Key for Tesla's written reviews are positive against 100% of SundialEV's.

Key for Tesla ships an update every 5 weeks, SundialEV every 6 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Key for Tesla | SundialEV |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.9 (14 ratings)](https://appshunter.io/ios/app/key-for-tesla/id1202595802/reviews) | **[5.0 (11 ratings)](https://appshunter.io/ios/app/sundialev/id6782257870/reviews)** |
| Number of ratings | **14** | 11 |
| Positive reviews | 55.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | Paid | **Free** |
| Size | 10 MB | 42 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joao Nunes](https://appshunter.io/developer/508236936) | [AppAhead](https://appshunter.io/developer/379575025) |

## What reviewers say

### Key for Tesla

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

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


### SundialEV

[App page](https://appshunter.io/ios/app/sundialev/id6782257870)

This app intelligently directs surplus solar energy to charge your electric vehicle instead of sending it back to the grid. It helps users save money by avoiding high electricity buy-back rates and utilizing cheaper off-peak charging times. The system is designed for a set-and-forget experience, integrating with existing EV and solar hardware.

**Highlights:** Charges EV with surplus solar, Avoids grid export for low rates, Set charging floor and battery reserve, Works with all Tesla models, Coordinates with Powerwall, Utilizes off-peak charging

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

**In-app purchases:** none


## Frequently asked questions

### Is Key for Tesla free?

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

### Is SundialEV free?

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

### Which has better reviews, Key for Tesla or SundialEV?

SundialEV is rated higher. Key for Tesla averages 2.9 out of 5 from 14 ratings, while SundialEV averages 5.0 from 11 ratings.

### Do Key for Tesla or SundialEV have ads?

Neither Key for Tesla nor SundialEV shows ads.

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

Key for Tesla ships an update every 5 weeks, and SundialEV every 6 days. Most recently, Key for Tesla was updated on October 24, 2026 and SundialEV on October 24, 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.*