# Uncertainty Calculator vs ATT

The clearest difference is price: ATT at Free against Uncertainty Calculator's $3.99. ATT also leads on iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

ATT is free to download; Uncertainty Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Uncertainty Calculator | ATT |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Paid | **Free** |
| Size | 1 MB | 8 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Imam Muhammad bin Saud Islamic University](https://appshunter.io/developer/1082219151) |

## What reviewers say

### Uncertainty Calculator

[App page](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440)

This app allows users to perform error propagation calculations for mathematical expressions involving uncertain variables. It supports absolute and relative error inputs, various functions, and trigonometric calculations in degrees or radians. The tool helps ensure accurate reporting of results based on estimated errors.

**Highlights:** Error propagation calculations, Absolute and relative error input, Support for mathematical functions, Trigonometric calculations (degrees/radians), Variable combination in expressions, Significant figure guidance

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

**In-app purchases:** none


### ATT

[App page](https://appshunter.io/ios/app/att/id1607800432)

This application is a smart attendance and departure system for Imam Muhammad bin Saud Islamic University. It allows users to manage their attendance records digitally.

**Highlights:** Smart attendance tracking, Departure management, Digital record keeping, University specific system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Uncertainty Calculator free?

Uncertainty Calculator costs $3.99, with no in-app purchases.

### Is ATT free?

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

### Do Uncertainty Calculator or ATT have ads?

Neither Uncertainty Calculator nor ATT shows ads.

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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.*