# cFormula vs Calculator XplusY

The clearest difference is price: cFormula at Free against Calculator XplusY's $1.99. Calculator XplusY's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

cFormula is free to download; Calculator XplusY costs $1.99 up front. cFormula sells 1 one-off in-app purchase. Calculator XplusY asks for nothing beyond the download.

cFormula ships an update every 5 months, Calculator XplusY fortnightly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | cFormula | Calculator XplusY |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 13 MB | 18 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [疆 边](https://appshunter.io/developer/1124320934) | [crea:do s.r.o.](https://appshunter.io/developer/1816197473) |

## What reviewers say

### cFormula

[App page](https://appshunter.io/ios/app/cformula/id6475750528)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fully unlock app | $1.99 | one-time |


### Calculator XplusY

[App page](https://appshunter.io/ios/app/calculator-xplusy/id6746332566)

**In-app purchases:** none


## Frequently asked questions

### Is cFormula free?

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

### Is Calculator XplusY free?

Calculator XplusY costs $1.99, with no in-app purchases.

### Do cFormula or Calculator XplusY have ads?

cFormula shows ads; Calculator XplusY does not.

### Which is updated more often, cFormula or Calculator XplusY?

cFormula ships an update every 5 months, and Calculator XplusY fortnightly. Most recently, cFormula was updated on October 27, 2026 and Calculator XplusY on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*