# Slope Calculator vs Sigma Utils

The clearest difference is in-app purchases: Sigma Utils at none against Slope Calculator's 1. Sigma Utils also leads on update cadence (every 8 days vs every 14 months) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

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

Slope Calculator ships an update every 14 months, Sigma Utils every 8 days. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Slope Calculator | Sigma Utils |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 57 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [SIGMA COMPUTERS](https://appshunter.io/developer/1587103930) |

## 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 |


### Sigma Utils

[App page](https://appshunter.io/ios/app/sigma-utils/id6503425116)

**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 Sigma Utils free?

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

### Do Slope Calculator or Sigma Utils have ads?

Neither Slope Calculator nor Sigma Utils shows ads.

### Which is updated more often, Slope Calculator or Sigma Utils?

Slope Calculator ships an update every 14 months, and Sigma Utils every 8 days. Most recently, Slope Calculator was updated on October 23, 2026 and Sigma Utils on October 19, 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.*