# Uncertainty Calculator vs PEP人教版三年级上

The clearest difference is update cadence: PEP人教版三年级上 at every 3 weeks against Uncertainty Calculator's every 3 months. PEP人教版三年级上 also leads on price ($0.99 vs $3.99) and iOS requirement (11.2 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Uncertainty Calculator costs $3.99 and PEP人教版三年级上 $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Uncertainty Calculator ships an update every 3 months, PEP人教版三年级上 every 3 weeks. The most recent releases landed on November 2, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Uncertainty Calculator | PEP人教版三年级上 |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 80 MB |
| Requires iOS | 17.0 | **11.2** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [红喜 燕](https://appshunter.io/developer/1226829115) |

## 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


### PEP人教版三年级上

[App page](https://appshunter.io/ios/app/pep/id1523440466)

**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 PEP人教版三年级上 free?

PEP人教版三年级上 costs $0.99, with no in-app purchases.

### Do Uncertainty Calculator or PEP人教版三年级上 have ads?

Neither Uncertainty Calculator nor PEP人教版三年级上 shows ads.

### Which is updated more often, Uncertainty Calculator or PEP人教版三年级上?

Uncertainty Calculator ships an update every 3 months, and PEP人教版三年级上 every 3 weeks. Most recently, Uncertainty Calculator was updated on November 2, 2026 and PEP人教版三年级上 on September 8, 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.*