# Harbison-Fischer — user reviews

> 3 indexed App Store user reviews of Harbison by ChampionX Corporation, rated 4.00/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/harbison-fischer/id1318912044/reviews
- App overview in markdown: https://appshunter.io/ios/app/harbison-fischer/id1318912044.md
- Rating breakdown: 5★ 3 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (3 lowest-rated)

### 1/5 — Calculation are Wrong

*2018-08-05*

Calculations don’t match even close the HF slide rule or doing by hand!

### 5/5 — Sales Representative

*2018-07-30*

This is an awesome Application! Good job Brad

### 5/5 — Great App!

*2018-03-26*

This has saved me so much time, and time is money! I don’t know how we survived before it came out. 
Bravo to the developers!

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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 2026-06-01.*