# Uncertainty Calculator vs DockB

The clearest difference is price: DockB at Free against Uncertainty Calculator's $3.99. DockB also leads on update cadence (every 6 days vs every 3 months) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

DockB 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, DockB every 6 days. Both last shipped on September 14, 2026.

## The numbers

| Metric | Uncertainty Calculator | DockB |
| --- | --- | --- |
| 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 6 days** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 168 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Digital Learning GmbH](https://appshunter.io/developer/919469681) |

## 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


### DockB

[App page](https://appshunter.io/ios/app/dockb/id1559735769)

This app facilitates communication and learning for participants and staff of the Berufsbildungswerk Südhessen. It offers calendar integration, news updates including meal plans, group discussions, and direct chat or video conferencing for easy contact and collaboration.

**Highlights:** Calendar with appointment details, Outlook integration, Push notifications for appointments, Weekly meal plan updates, Newsfeed for events and topics, Group discussions, Direct chat and video meetings

**Features:** macOS Compatibility, Apple Wallet, 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 DockB free?

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

### Do Uncertainty Calculator or DockB have ads?

Neither Uncertainty Calculator nor DockB shows ads.

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

Uncertainty Calculator ships an update every 3 months, and DockB every 6 days. Most recently, Uncertainty Calculator was updated on September 14, 2026 and DockB on September 14, 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.*