# Hardness Converter HD — user reviews

> 2 indexed App Store user reviews of Hardness Converter HD by Buehler LTD., rated 4.00/5 from 2 ratings.

- Source: https://appshunter.io/ios/app/hardness-converter-hd/id545857260/reviews
- App overview in markdown: https://appshunter.io/ios/app/hardness-converter-hd/id545857260.md
- Rating breakdown: 5★ 1 · 4★ 0 · 3★ 1 · 2★ 0 · 1★ 0

## Most critical reviews (2 lowest-rated)

### 3/5 — ASTM E 140

*2014-08-29*

It is not clear if this conversion program coincides with ASTM E 140 and as such it's usefulness is in question especially when compliance with NACE MR0175 is mandated.

### 5/5 — Tom

*2013-06-12*

Easy to use.  Nice graphics.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*