# STEMS EV vs Autoteca

The clearest difference is in-app purchases: STEMS EV at none against Autoteca's 1. STEMS EV also leads on update cadence (every 10 days vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Autoteca sells 1 one-off in-app purchase. STEMS EV asks for nothing beyond the download.

STEMS EV ships an update every 10 days, Autoteca monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | STEMS EV | Autoteca |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Size | 19 MB | 10 MB |
| Requires iOS | **16** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [台科電科技股份有限公司](https://appshunter.io/developer/1826972531) | [Mustafa Kenan Atmaca](https://appshunter.io/developer/1005261563) |

## 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


### Autoteca

[App page](https://appshunter.io/ios/app/autoteca-car-maintenance-log/id6801903107)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Autoteca Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is STEMS EV free?

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

### Is Autoteca free?

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

### Do STEMS EV or Autoteca have ads?

Neither STEMS EV nor Autoteca shows ads.

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

STEMS EV ships an update every 10 days, and Autoteca monthly. Most recently, STEMS EV was updated on October 30, 2026 and Autoteca on October 31, 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.*