# Machining Calculator vs Tri

The clearest difference is review sentiment: Tri at 100% against Machining Calculator's 55%. Tri also leads on rating (5.0 vs 4.3). Machining Calculator's advantage is ads (none vs shown) and update cadence (every 5 months vs every 12 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tri holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 55% of Machining Calculator's written reviews are positive against 100% of Tri's.

Machining Calculator ships an update every 5 months, Tri every 12 months. The most recent releases landed on August 29, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Machining Calculator | Tri |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/machining-calculator/id389011280/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 54.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 12 months |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 4 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [AB Sandvik Coromant](https://appshunter.io/developer/1789776926) | [Thirdware.jp](https://appshunter.io/developer/464228680) |

## What reviewers say

### Machining Calculator

[App page](https://appshunter.io/ios/app/machining-calculator/id389011280)

This app helps engineers and operators optimize machining performance by calculating optimal cut settings for turning, milling, drilling, and tapping. It demonstrates how minor parameter adjustments can significantly impact overall results.

**Highlights:** Calculate cut settings, Optimize turning performance, Optimize milling performance, Optimize drilling performance, Optimize tapping performance, Demonstrates parameter impact

**Features:** macOS Compatibility

**In-app purchases:** none


### Tri

[App page](https://appshunter.io/ios/app/tri-func/id496807268)

This utility app provides the formula and value for calculating triangle properties. It's designed for quick access to mathematical formulas related to triangles.

**Highlights:** Triangle formula display, Value calculation, Quick access utility, Mathematical formulas

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Machining Calculator free?

Machining Calculator is free to download, with no in-app purchases.

### Is Tri free?

Tri is free to download, with no in-app purchases.

### Which has better reviews, Machining Calculator or Tri?

Tri is rated higher. Machining Calculator averages 4.3 out of 5 from 4 ratings, while Tri averages 5.0 from 1 ratings.

### Do Machining Calculator or Tri have ads?

Tri shows ads; Machining Calculator does not.

### Which is updated more often, Machining Calculator or Tri?

Machining Calculator ships an update every 5 months, and Tri every 12 months. Most recently, Machining Calculator was updated on August 29, 2026 and Tri on September 16, 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.*