# PrimeXTime vs Math Fast Calculation Game

The clearest difference is ads: PrimeXTime at none against Math Fast Calculation Game's shown. Math Fast Calculation Game's advantage is update cadence (daily vs every 4 months) and iOS requirement (12.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PrimeXTime ships an update every 4 months, Math Fast Calculation Game daily. The most recent releases landed on September 28, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | PrimeXTime | Math Fast Calculation Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/primextime/id1253706544/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free | — |
| Size | 6 MB | 43 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rick Hutchinson](https://appshunter.io/developer/1253697991) | [Ivan Rancic](https://appshunter.io/developer/1560879460) |

## What reviewers say

### PrimeXTime

[App page](https://appshunter.io/ios/app/primextime/id1253706544)

Engage your mind with a unique number-based puzzle game. Start with a random number and strategically divide by single-digit primes. Bump the number by multiplying by 10 and adding a digit to reach 1 and win.

**Highlights:** Number division by primes, Strategic bumping mechanic, Goal to reduce number to 1, Brain exercise gameplay, Simple, intuitive interface

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

**In-app purchases:** none


### Math Fast Calculation Game

[App page](https://appshunter.io/ios/app/math-fast-calculation-game/id6748619782)

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

**In-app purchases:** none


## Frequently asked questions

### Is PrimeXTime free?

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

### Is Math Fast Calculation Game free?

Math Fast Calculation Game is free to download, with no in-app purchases.

### Do PrimeXTime or Math Fast Calculation Game have ads?

Math Fast Calculation Game shows ads; PrimeXTime does not.

### Which is updated more often, PrimeXTime or Math Fast Calculation Game?

PrimeXTime ships an update every 4 months, and Math Fast Calculation Game daily. Most recently, PrimeXTime was updated on September 28, 2026 and Math Fast Calculation Game on September 21, 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.*