# Length Converter vs Nanotech

The clearest difference is monetization model: Nanotech at free against Length Converter's paid. Nanotech also leads on update cadence (every 2 months vs every 72 months). Length Converter's advantage is ratings volume (12 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

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

Nanotech holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Length Converter has 12 ratings behind it against 1, so its average is the more settled of the two.

Length Converter ships an update every 72 months, Nanotech every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Length Converter | Nanotech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (12 ratings)](https://appshunter.io/ios/app/length-converter/id1533575399/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nanotech/id6448310023/reviews)** |
| Number of ratings | **12** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 72 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 13 MB |
| Requires iOS | 13.4 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [MH&W International Corporation](https://appshunter.io/developer/1684337989) |

## What reviewers say

### Length Converter

[App page](https://appshunter.io/ios/app/length-converter/id1533575399)

Easily convert lengths between various units including feet, inches, meters, decimeters, centimeters, and millimeters. This tool is designed for quick and accurate conversions for a wide range of users.

**Highlights:** Converts feet, inches, meters, decimeters, centimeters, millimeters, Fast and accurate conversions, User-friendly interface, Supports multiple units

**Features:** macOS Compatibility

**In-app purchases:** none


### Nanotech

[App page](https://appshunter.io/ios/app/nanotech/id6448310023)

This tool helps select common mode cores to prevent motor bearing failures and protect electrical grids from VFD-generated noise. It also features a calculator for maximum allowable bearing current.

**Highlights:** Common mode core selector, Kit selection, Motor bearing failure prevention, VFD EMC noise protection, Maximum allowable bearing current calculator

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Length Converter free?

Length Converter is free to download, with no in-app purchases.

### Is Nanotech free?

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

### Which has better reviews, Length Converter or Nanotech?

Nanotech is rated higher. Length Converter averages 4.8 out of 5 from 12 ratings, while Nanotech averages 5.0 from 1 ratings.

### Do Length Converter or Nanotech have ads?

Neither Length Converter nor Nanotech shows ads.

### Which is updated more often, Length Converter or Nanotech?

Length Converter ships an update every 72 months, and Nanotech every 2 months. Most recently, Length Converter was updated on October 24, 2026 and Nanotech on October 24, 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.*