# x-Cal+

> x-Cal+ (iPhone/iPad app by FMILLET.)

- Source: https://appshunter.io/ios/app/x-cal-plus/id6747112339 (this page in markdown: same URL + `.md`)
- Developer: [FMILLET](https://appshunter.io/developer/550887984)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 1 MB
- Languages: American English
- Released: 2025-08-07
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/x-cal-plus/id6747112339/reviews.md

## What is x?

x-Cal is an ergonomic scientific calculator, in both portrait and landscape orientations, using RPN (c) 
Great for professional and educational use, it allows to quickly develop an understanding of register operations and basic programming
Features fixed, scientific or engineer number formats, trigonometric and hyperbolic calculations in radians, degrees or grades, basic statistical computations, linear correlations, combinations, etc. 
Swipe on the top result display area to view the arithmetic register stack, tap on the top to display other registers such as storage register, statistical registers and program steps
Record programs such as a quadratic equation solver, or display graphs to visualize functions y = f(x)
At any time look, copy and paste text style computations into e-Mails, notes, etc.


## Version history (last 5 releases)

### 10.4 — 2025-12-12

Age control

### 10.3 — 2025-09-08

Button display is improved

### 10.2 — 2025-08-19

Calculator buttons display are not underlined anymore. More realistic rendering.

### 10.1 — 2025-08-12

Calculator buttons display are not underlined anymore. More realistic rendering.

### 10.0 — 2025-08-05

No release notes.

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## Related topics

[fmillet](https://appshunter.io/ios/topics/fmillet)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-16.*