EVcheck vs KeyPlus3
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
EVcheck
This app diagnoses electric vehicle battery health in real-time using OBD2 data. It monitors battery aging, stress, and cell anomalies, providing results via smartphone and device indicators. Additional features include pedal mode display and energy efficiency diagnostics.
- Real-time battery diagnostics
- Battery aging and stress monitoring
- Pedal mode display
- Energy efficiency diagnosis
- Cell anomaly detection
- Cloud-based data analysis
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KeyPlus3
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Special Key KeyPlus provides customers with a unique experience. Creating a world where you can easily control and share car doors with just one phone, enabling a special life. The one thing that turns my car into a smart car is Special Key KeyPlus. YouTube Introduction Video: https://www.youtube.com/watch?v=rcryNcxolg8&t=2s Company Website: http://smartkeyplus.com/ Blog: https://blog.naver.com/sokeyplus
Screenshots
Verdict
The clearest difference is iOS requirement: KeyPlus3 at 15.0 against EVcheck's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EVcheck ships an update every 3 weeks, KeyPlus3 every 2 weeks. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.
| Parameter | EVcheck | KeyPlus3 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 3 weeks | Every 2 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | β |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 18.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 112 MB | 35 MB |
| Age rating | 9+ | 4+ |
| Developer | Betterwhy Co.Ltd | Special One Co., Ltd. |
In-app purchases
EVcheck
No in-app purchases
KeyPlus3
No in-app purchases
