# Tri vs Machining Cutting Calculations

The clearest difference is in-app purchases: Tri at none against Machining Cutting Calculations's 4. Machining Cutting Calculations's advantage is ads (none vs shown) and update cadence (monthly vs every 12 months). On price and device support there is nothing between them.

Both are free to download. Machining Cutting Calculations sells 4 in-app purchases, starting at $1.99 per 7 days. Tri asks for nothing beyond the download.

Tri ships an update every 12 months, Machining Cutting Calculations monthly. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Tri | Machining Cutting Calculations |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 56 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thirdware.jp](https://appshunter.io/developer/464228680) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### 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


### Machining Cutting Calculations

[App page](https://appshunter.io/ios/app/machining-cutting-calculations/id6739997839)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $6.99 | per year |
| Lifetime Premium | $14.99 | one-time |


## Frequently asked questions

### Is Tri free?

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

### Is Machining Cutting Calculations free?

Machining Cutting Calculations is free to download, with in-app purchases available.

### Do Tri or Machining Cutting Calculations have ads?

Tri shows ads; Machining Cutting Calculations does not.

### Which is updated more often, Tri or Machining Cutting Calculations?

Tri ships an update every 12 months, and Machining Cutting Calculations monthly. Most recently, Tri was updated on October 3, 2026 and Machining Cutting Calculations on October 14, 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.*