# Machinist's Calculator — user reviews

> 8 indexed App Store user reviews of Machinist's Calculator by Tianna Henry-Lewis, rated 3.90/5 from 64 ratings.

- Source: https://appshunter.io/ios/app/machinists-calculator/id1300015839/reviews
- App overview in markdown: https://appshunter.io/ios/app/machinists-calculator/id1300015839.md
- Rating breakdown: 5★ 40 · 4★ 4 · 3★ 5 · 2★ 6 · 1★ 9

## Most critical reviews (8 lowest-rated)

### 1/5 — Thought it would be better

*2019-01-02, version 5.0*

I thought that I’d be able to find ideal material cutting rates but alas not...

### 1/5 — Useless

*2018-12-10, version 5.0*

Where’s the metric??! Useless.

### 1/5 — Metric?

*2018-10-20, version 5.0*

Can’t find how to change to metric config

### 2/5 — Will not work on my iphone 8

*2019-10-15*

Would like to use this app on my iphone 8 but keeps not loading. I down load the app and when i open it it will not open

### 3/5 — Very handy to have

*2019-08-29*

But its missing MRR.
If it had this id give it a 4 star

### 3/5 — Simple but what I needed

*2019-04-18*

Just calculates feeds and speeds, but gives you the option to calculate using different combinations of known information.  Not clever enough to cope with variable tool or stock materials.  You have to get the feed per tooth for any material and cutting rpms from charts from the company that made the tool.  At least that is cutter specific, taking into account geometry and cutter material.

### 5/5 — clean and easy!

*2018-12-20*

I bought two apps for the same reason, this one is the winner, simple, easy to use and most efficient!

### 5/5 — New layout

*2018-01-31*

I submitted a request to update or change the layout and they totally made it better. Thanx!

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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 2026-06-10.*