# Function Calc vs Calculator XplusY

The clearest difference is price: Function Calc at Free against Calculator XplusY's $1.99. Calculator XplusY's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.6). On update cadence, ads and in-app purchases there is nothing between them.

Function Calc is free to download; Calculator XplusY costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Function Calc ships an update monthly, Calculator XplusY fortnightly. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Function Calc | Calculator XplusY |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/function-calc/id1188227053/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 5 MB | 18 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hugh Pelham](https://appshunter.io/developer/1188227052) | [crea:do s.r.o.](https://appshunter.io/developer/1816197473) |

## What reviewers say

### Function Calc

[App page](https://appshunter.io/ios/app/function-calc/id1188227053)

This app offers a powerful, programmable scientific calculator with graphing capabilities. It allows users to create custom functions, store equations, and perform complex calculations with ease. The interface features a visible tape display and supports dictation for statistical analysis.

**Highlights:** Programmable custom functions, Graphing capabilities, Tape display with edit/undo, Unit conversions (120+), Dictate calculations, Export graphs (PDF, PNG)

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

**In-app purchases:** none


### Calculator XplusY

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

**In-app purchases:** none


## Frequently asked questions

### Is Function Calc free?

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

### Is Calculator XplusY free?

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

### Do Function Calc or Calculator XplusY have ads?

Neither Function Calc nor Calculator XplusY shows ads.

### Which is updated more often, Function Calc or Calculator XplusY?

Function Calc ships an update monthly, and Calculator XplusY fortnightly. Most recently, Function Calc was updated on October 7, 2026 and Calculator XplusY on October 3, 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.*