# LDM STUDIO_EN vs Smart CarKey

LDM STUDIO_EN and Smart CarKey are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LDM STUDIO_EN ships an update every 5 weeks, Smart CarKey every 2 months. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | LDM STUDIO_EN | Smart CarKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ldm-studio-en/id1187812038/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 25 MB | 29 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [刚 何](https://appshunter.io/developer/1146786543) | [Shanghai WanWay Digital Technology Co.,Ltd](https://appshunter.io/developer/1275343765) |

## What reviewers say

### LDM STUDIO_EN

[App page](https://appshunter.io/ios/app/ldm-studio-en/id1187812038)

This utility app provides tools for measuring distances on sites and highways. It offers a straightforward way to get accurate measurements for various applications.

**Highlights:** Site measurement, Highway measurement, Distance calculation, Utility tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart CarKey

[App page](https://appshunter.io/ios/app/smart-carkey/id6748637133)

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

**In-app purchases:** none


## Frequently asked questions

### Is LDM STUDIO_EN free?

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

### Is Smart CarKey free?

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

### Do LDM STUDIO_EN or Smart CarKey have ads?

Neither LDM STUDIO_EN nor Smart CarKey shows ads.

### Which is updated more often, LDM STUDIO_EN or Smart CarKey?

LDM STUDIO_EN ships an update every 5 weeks, and Smart CarKey every 2 months. Most recently, LDM STUDIO_EN was updated on October 21, 2026 and Smart CarKey on October 11, 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.*