# Calculuz vs XSeattle

The clearest difference is in-app purchases: XSeattle at none against Calculuz's 7. XSeattle also leads on ads (none vs shown). Calculuz's advantage is iOS requirement (12.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Calculuz sells 7 one-off in-app purchases. XSeattle asks for nothing beyond the download.

Calculuz ships an update every 6 days, XSeattle every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Calculuz | XSeattle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calculuz-learning-math-game/id6443721522/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 82 MB | 8 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bad Rhino ApS](https://appshunter.io/developer/1053234944) | [Dipen Patel](https://appshunter.io/developer/570360425) |

## What reviewers say

### Calculuz

[App page](https://appshunter.io/ios/app/calculuz-learning-math-game/id6443721522)

A challenging math puzzle game where you fill in missing numbers in formulas. Progress through increasing difficulty levels, use power-ups, and compete for high scores. Tests arithmetic skills with timed challenges.

**Highlights:** Fill missing numbers in formulas, Progressive difficulty levels, Timed challenges, Power-ups available, Highscore lists for competition, Multiple formula collections

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 lifes | $0.99 | one-time |
| 25 lifes | $1.99 | one-time |
| 50 lifes | $2.99 | one-time |
| 100 lifes | $5.99 | one-time |
| 250 lifes | $9.99 | one-time |
| 500 lifes | $17.99 | one-time |
| 1000 lifes | $22.99 | one-time |


### XSeattle

[App page](https://appshunter.io/ios/app/xseattle/id6479410755)

**In-app purchases:** none


## Frequently asked questions

### Is Calculuz free?

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

### Is XSeattle free?

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

### Do Calculuz or XSeattle have ads?

Calculuz shows ads; XSeattle does not.

### Which is updated more often, Calculuz or XSeattle?

Calculuz ships an update every 6 days, and XSeattle every 2 weeks. Most recently, Calculuz was updated on November 3, 2026 and XSeattle on November 4, 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.*