# Uncertainty Calculator vs Edoo

The clearest difference is price: Edoo at Free against Uncertainty Calculator's $3.99. Edoo also leads on iOS requirement (15.6 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

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

Uncertainty Calculator ships an update every 3 months, Edoo every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Uncertainty Calculator | Edoo |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 31 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Edoo SA](https://appshunter.io/developer/1342759313) |

## 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


### Edoo

[App page](https://appshunter.io/ios/app/edoo/id1342759320)

This app streamlines processes and facilitates communication between parents, students, and teachers. Access all school-related information anytime, anywhere, including personal assignments and daily student activities with due dates and downloadable attachments.

**Highlights:** Parent-teacher communication, Student activity tracking, Assignment management, Downloadable attachments, Real-time information access

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

**In-app purchases:** none


## Frequently asked questions

### Is Uncertainty Calculator free?

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

### Is Edoo free?

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

### Do Uncertainty Calculator or Edoo have ads?

Neither Uncertainty Calculator nor Edoo shows ads.

### Which is updated more often, Uncertainty Calculator or Edoo?

Uncertainty Calculator ships an update every 3 months, and Edoo every 2 months. Most recently, Uncertainty Calculator was updated on November 2, 2026 and Edoo on November 2, 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.*