# Material Removal Rate — Calculate MRR efficiency

> Calculate MRR efficiency (iPhone/iPad app by Vladislav Zhirnov.)

- Source: https://appshunter.io/ios/app/material-removal-rate/id6503178665 (this page in markdown: same URL + `.md`)
- Developer: [Vladislav Zhirnov](https://appshunter.io/developer/1476188065)
- Category: Utilities, Productivity
- Price: $1.99
- Age rating: 4+
- Requires: iOS 16.2 · 3 MB
- Languages: American English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 22 more
- Released: 2024-05-27
- Data updated: 2026-06-24
- User reviews in markdown: https://appshunter.io/ios/app/material-removal-rate/id6503178665/reviews.md

## What is Material Removal Rate?

Boost throughput and cut guesswork with the Material Removal Rate Calculator—your quick, reliable way to quantify MRR and tune cutting parameters for real-world results. Material removal rate is the volume removed per unit time and a direct indicator of cutting efficiency, cycle time, and profitability.

Built for production decisions
Get fast, consistent answers when you are comparing setups and tooling, verifying CAM programs on the floor, estimating cycle time and machine load, and balancing productivity versus tool life.

What’s inside
MRR calculators for Turning, Milling, Drilling, Grinding, and Grooving—enter depth and width of cut and feed to compute removal volume instantly. Spindle Speed and Feed Rate helpers turn SFM, RPM, IPT, and IPM into actionable machine settings. Chip Load (Feed per Tooth) guidance helps you hit proper chip thickness per edge and avoid rubbing or overload.

Make better trade-offs
Finding the sweet spot between speed and feed protects tool life while keeping parts moving. The app helps you understand those levers so you can push feed where it matters, trim cutting speed when heat is climbing, and keep surface finish on spec.

Why it matters
Faster setup validation by quantifying removal rates when you change cutters, holders, or offsets. Repeatable results by standardizing shop math across shifts and machines. Less waste and more parts by reducing trial and error and moving toward predictable cycle times.

Whether you are roughing aluminum, profiling stainless, drilling deep holes, or grinding to finish, this calculator brings proven shop math to your pocket so you can decide with data, not hunches.


## Version history (last 3 releases)

### 3 — 2025-09-02

Spindle Speed & Feed Rate and Chip Load (Feed per Tooth) added

### 2 — 2024-05-29

Bugs fixed

### 1.0 — 2024-05-27

No release notes.

## More apps by Vladislav Zhirnov

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- [Road signs: all countries](https://appshunter.io/ios/app/road-signs-all-countries/id1500810663)

All apps by Vladislav Zhirnov: https://appshunter.io/developer/1476188065

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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 2026-06-24.*