# Length vs inch mm converter

The clearest difference is price: inch mm converter at Free against Length's $0.99. Length's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

inch mm converter is free to download; Length costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Length ships an update every 11 months, inch mm converter every 12 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Length | inch mm converter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.6 (179 ratings)](https://appshunter.io/ios/app/inch-mm-converter/id6740137317/reviews)** |
| Number of ratings | — | **179** |
| Positive reviews | — | 82.4% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 11 months** | Every 12 months |
| Monetization | — | Ad-supported |
| Size | 34 MB | 12 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Length

[App page](https://appshunter.io/ios/app/length/id512188088)

**Features:** macOS Compatibility

**In-app purchases:** none


### inch mm converter

[App page](https://appshunter.io/ios/app/inch-mm-converter/id6740137317)

Easily convert measurements between inches and millimeters. This straightforward tool simplifies length conversions for everyday use.

**Highlights:** Inch to millimeter conversion, Millimeter to inch conversion, Easy to use interface, Simple measurement tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Length free?

Length costs $0.99, with no in-app purchases.

### Is inch mm converter free?

inch mm converter is free to download, with no in-app purchases.

### Do Length or inch mm converter have ads?

inch mm converter shows ads; Length does not.

### Which is updated more often, Length or inch mm converter?

Length ships an update every 11 months, and inch mm converter every 12 months. Most recently, Length was updated on November 6, 2026 and inch mm converter on November 8, 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.*