# LDM STUDIO_EN vs Mileseey Optics

The clearest difference is update cadence: LDM STUDIO_EN at every 5 weeks against Mileseey Optics's every 10 months. LDM STUDIO_EN also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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, Mileseey Optics every 10 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | LDM STUDIO_EN | Mileseey Optics |
| --- | --- | --- |
| 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 10 months |
| Monetization | Free | — |
| Size | 25 MB | 184 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [刚 何](https://appshunter.io/developer/1146786543) | [SHENZHEN MILESEEY TECHNOLOGY CO.LTD](https://appshunter.io/developer/1563678294) |

## 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


### Mileseey Optics

[App page](https://appshunter.io/ios/app/mileseey-optics/id6743624378)

**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 Mileseey Optics free?

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

### Do LDM STUDIO_EN or Mileseey Optics have ads?

Neither LDM STUDIO_EN nor Mileseey Optics shows ads.

### Which is updated more often, LDM STUDIO_EN or Mileseey Optics?

LDM STUDIO_EN ships an update every 5 weeks, and Mileseey Optics every 10 months. Most recently, LDM STUDIO_EN was updated on November 2, 2026 and Mileseey Optics 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.*