# STEMS EV vs Kwhit

The clearest difference is in-app purchases: STEMS EV at none against Kwhit's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Kwhit sells 2 in-app purchases, starting at $0.99 per month. STEMS EV asks for nothing beyond the download.

STEMS EV ships an update every 5 days, Kwhit every 3 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | STEMS EV | Kwhit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 16 MB | 49 MB |
| Requires iOS | **16** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [台科電科技股份有限公司](https://appshunter.io/developer/1826972531) | [CHENG-WEI LEE](https://appshunter.io/developer/1095964179) |

## What reviewers say

### STEMS EV

[App page](https://appshunter.io/ios/app/stems-ev/id6753740708)

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

**In-app purchases:** none


### Kwhit

[App page](https://appshunter.io/ios/app/kwhit-ev-charging-assistant/id6786120588)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kwhit Pro Monthly | $0.99 | per month |
| Kwhit Pro Yearly | $8.99 | per year |


## Frequently asked questions

### Is STEMS EV free?

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

### Is Kwhit free?

Kwhit is free to download, with in-app purchases available.

### Do STEMS EV or Kwhit have ads?

Neither STEMS EV nor Kwhit shows ads.

### Which is updated more often, STEMS EV or Kwhit?

STEMS EV ships an update every 5 days, and Kwhit every 3 days. Most recently, STEMS EV was updated on October 6, 2026 and Kwhit on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*