# Slope Calculator vs TriangleData

The clearest difference is review sentiment: Slope Calculator at 58% against TriangleData's 0%. TriangleData's advantage is in-app purchases (none vs 1) and update cadence (every 8 days vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Slope Calculator sells 1 one-off in-app purchase. TriangleData asks for nothing beyond the download.

Slope Calculator ships an update every 14 months, TriangleData every 8 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Slope Calculator | TriangleData |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (104 ratings)](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699/reviews)** | — |
| Number of ratings | **104** | — |
| Positive reviews | **58.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 25 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [Kiryl Sabko](https://appshunter.io/developer/1573151750) |

## What reviewers say

### Slope Calculator

[App page](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699)

Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.

**Highlights:** Calculate slope as angle, Calculate slope as percentage, Calculate slope as ratio, Input two sides of a right triangle, Calculate remaining triangle values, Intuitive and easy to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### TriangleData

[App page](https://appshunter.io/ios/app/triangledata/id1632799728)

This utility app helps you calculate triangle angles and data. It can determine if a corner is 90 degrees by taking measurements and inputting them into the app. You can also use it to calculate right triangle data.

**Highlights:** Calculate triangle angles, Check for 90-degree corners, Input measurements for calculation, Calculate right triangle data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Slope Calculator free?

Slope Calculator is free to download, with in-app purchases available.

### Is TriangleData free?

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

### Do Slope Calculator or TriangleData have ads?

Neither Slope Calculator nor TriangleData shows ads.

### Which is updated more often, Slope Calculator or TriangleData?

Slope Calculator ships an update every 14 months, and TriangleData every 8 days. Most recently, Slope Calculator was updated on October 30, 2026 and TriangleData on October 24, 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.*