# Uncertainty Calculator vs Sequences

The clearest difference is price: Sequences at Free against Uncertainty Calculator's $3.99. Sequences also leads on iOS requirement (15.6 vs 17.0). Uncertainty Calculator's advantage is in-app purchases (none vs 2). On rating, ratings volume, update cadence and ads there is nothing between them.

Sequences is free to download; Uncertainty Calculator costs $3.99 up front. Sequences sells 2 in-app purchases, starting at $12.99 per month. Uncertainty Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Uncertainty Calculator against 5.0 for Sequences. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Uncertainty Calculator | Sequences |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sequences-amikeo-apps/id1272038632/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 82 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) | [AUTICIEL](https://appshunter.io/developer/495565739) |

## 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


### Sequences

[App page](https://appshunter.io/ios/app/sequences-amikeo-apps/id1272038632)

This app helps individuals learn and perform essential daily tasks through customizable visual sequences. Create personalized step-by-step guides with photos, videos, and audio recordings to support independence.

**Highlights:** Customizable visual sequences, Photo, video, and audio integration, Pre-made example sequences, Task creation and modification, Integration with Agenda™ app, Designed for special needs

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement Amikeo | $12.99 | per month |
| Abonnement Amikeo | $149.99 | per year |


## Frequently asked questions

### Is Uncertainty Calculator free?

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

### Is Sequences free?

Sequences is free to download, with in-app purchases available.

### Which has better reviews, Uncertainty Calculator or Sequences?

Uncertainty Calculator and Sequences are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Uncertainty Calculator or Sequences have ads?

Neither Uncertainty Calculator nor Sequences shows ads.

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

Uncertainty Calculator ships an update every 3 months, and Sequences every 3 months. Most recently, Uncertainty Calculator was updated on October 29, 2026 and Sequences on October 30, 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.*