# Tri vs Square Footage Calculator +

The clearest difference is review sentiment: Tri at 100% against Square Footage Calculator +'s 0%. Tri also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Square Footage Calculator +'s advantage is ads (none vs shown) and ratings volume (292 vs 1). On price and device support there is nothing between them.

Both are free to download. Square Footage Calculator + sells 1 one-off in-app purchase. Tri asks for nothing beyond the download.

Tri holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Square Footage Calculator + has 292 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Tri's written reviews are positive against 0% of Square Footage Calculator +'s.

Tri ships an update every 12 months, Square Footage Calculator + every 3 months. The most recent releases landed on September 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Tri | Square Footage Calculator + |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** | [4.5 (292 ratings)](https://appshunter.io/ios/app/square-footage-calculator-plus/id1493893224/reviews) |
| Number of ratings | 1 | **292** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 4 MB | 3 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thirdware.jp](https://appshunter.io/developer/464228680) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## 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


### Square Footage Calculator +

[App page](https://appshunter.io/ios/app/square-footage-calculator-plus/id1493893224)

Calculate the area of various geometric shapes in square feet, meters, or yards for home improvement projects. It also estimates the cost of materials based on your input.

**Highlights:** Area calculation for geometric shapes, Supports square feet, meters, and yards, Material cost estimation, Calculates for squares, triangles, rectangles, circles, trapezoids, and ellipses, Project planning tool

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $3.99 | one-time |


## Frequently asked questions

### Is Tri free?

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

### Is Square Footage Calculator + free?

Square Footage Calculator + is free to download, with in-app purchases available.

### Which has better reviews, Tri or Square Footage Calculator +?

Tri is rated higher. Tri averages 5.0 out of 5 from 1 ratings, while Square Footage Calculator + averages 4.5 from 292 ratings.

### Do Tri or Square Footage Calculator + have ads?

Tri shows ads; Square Footage Calculator + does not.

### Which is updated more often, Tri or Square Footage Calculator +?

Tri ships an update every 12 months, and Square Footage Calculator + every 3 months. Most recently, Tri was updated on September 16, 2026 and Square Footage Calculator + on September 22, 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.*