# Calculuz vs Fly

The clearest difference is in-app purchases: Fly at none against Calculuz's 7. Calculuz's advantage is iOS requirement (12.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

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

Calculuz ships an update every 6 days, Fly every 4 days. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Calculuz | Fly |
| --- | --- | --- |
| 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 | Yes |
| Update frequency | Every 6 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 82 MB | 7 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bad Rhino ApS](https://appshunter.io/developer/1053234944) | [Alex Klimenkov](https://appshunter.io/developer/824444885) |

## 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 |


### Fly

[App page](https://appshunter.io/ios/app/fly-neuro-brain-game/id6748058949)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculuz free?

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

### Is Fly free?

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

### Do Calculuz or Fly have ads?

Both Calculuz and Fly show ads.

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

Calculuz ships an update every 6 days, and Fly every 4 days. Most recently, Calculuz was updated on November 3, 2026 and Fly on October 28, 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.*