# SFX Scientific Calc Premium — Engineering Math & Statistics

> Advanced scientific calculator with extensive mathematical and memory functions. (iPhone/iPad app by Wai Kwong Lee.)

- Source: https://appshunter.io/ios/app/sfx-scientific-calc-premium/id1573567879 (this page in markdown: same URL + `.md`)
- Developer: [Wai Kwong Lee](https://appshunter.io/developer/1548427960)
- Category: Utilities, Productivity
- Price: $5.99
- Rating: 4.30/5 from 3 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 16 MB
- Languages: American English
- Released: 2021-06-24
- Data updated: 2026-09-14
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sfx-scientific-calc-premium/id1573567879/reviews.md

## What is SFX Scientific Calc Premium?

SFX Calc Premium gives students and engineers a familiar handheld-style scientific calculator on iPhone, iPad, and Mac. From quick arithmetic to statistics and engineering formulas, it keeps advanced calculations in a practical, customizable layout.

FEATURES

• Scientific functions: trigonometric, hyperbolic, logarithmic, exponential, power, and root
• Engineering notation with SI prefixes
• Fraction and percentage calculations
• Linear regression and statistical calculations
• Binary, octal, decimal, and hexadecimal modes
• Fixed-constant calculations for repeated operations
• One persistent memory plus 10 temporary memory registers
• Built-in formulas, including the quadratic formula, standard normal distribution probabilities, and engineering calculations
• Configurable 10- or 13-digit display and exponent formats
• Copy and paste support for faster workflows
• A familiar keypad with customizable layout options
• Ads free and no pop-up review

Ideal for coursework, laboratories, electronics, mathematics, science, and everyday engineering work.

## Key features

- Basic arithmetic operations
- Constant and volatile memory storage
- Fraction and percentage calculations
- Linear regression and statistics
- Number base conversions (Binary, Octal, Decimal, Hexadecimal)
- Trigonometric, hyperbolic, and logarithmic functions
- Formula calculations

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/sfx-scientific-calc-premium/id1573567879/reviews.md

### 3/5 — Good calc — not happy with lingerie Ads

*2026-09-06*

This is a great calculator with lots of features and configurable standard vs scientific input format.  I’ve used it for years.  I am, however, not happy I had to pay for full version to eliminate advertisements that weren’t originally that prominent.  The ads are consistently now a banner of lingerie photos, and it feels like extortion to pay to get rid of that.

**Developer response:** Thanks for the feedback. In the next release, let me add a user setting for reducing mature/ sensitive ads.

### 5/5 — Diesen Rechner gibt es von Casio Zeit 1985

*2025-07-01, version 6.4*

Dieser Rechner war als fx-5000 bekannt 

und war mit fx-850 fx-8000 und PB-1000 die Mathe / Physik Sensation für Studenten bis hin zum Professoren und geeignet für schnelle professionelle Gleichungen inclusive 
der Basic Prog. Sprache sowie Assembler 
——- lange Rede kurzer Sinn ——-

KI Robotic —— Casio sollte diese niemals
                           Sterben lassen, solange es
                           Computer und Taschen
                           Rechner und Pockets gibt

### 5/5 — Ara

*2024-07-21*

Very happy user of the app. This app arguably the best scientific calculator app on the store. Developer is very responsive too. I requested a minor UI change and it was implemented within one day. I would highly recommend this app.

### 5/5 — Great calculator for engineering

*2023-01-29, version 4.4*

Great calculator for engineering. I would like to see 7 segment numbers too.

### 5/5 — Classic scientific calculator

*2022-10-13*

Love the interface, which is clear, classic calculator graphic and layout.  It also gives positive feedback when you tap a key.  All this makes it fast and easy to use - what more could you want?  The trig functions all give accurate calculations (unlike another calculator app I had downloaded).  it is also good value to remove the ads.  Nice app!

## Frequently asked questions about SFX Scientific Calc Premium

### What makes SFX Calc Premium different from other calculators?

SFX Calc Premium is the ads-free and no review pop-up version of SFX Calc. It offers a comprehensive set of scientific and engineering functions without interruptions, providing a cleaner user experience.

### What types of calculations can SFX Calc Premium perform?

It handles basic arithmetic, calculations with constants and memory storage, fractions, percentages, linear regression, statistics, number base conversions, and advanced functions like trigonometric, hyperbolic, and logarithmic operations.

### Does SFX Calc Premium have ads?

No, SFX Calc Premium is explicitly designed to be an ads-free experience. This ensures uninterrupted use for complex calculations.

### What is the price of SFX Calc Premium?

SFX Calc Premium is available for a one-time purchase of $5.99. This grants you access to all its features without any recurring fees.

### On which devices can I use SFX Calc Premium?

SFX Calc Premium is compatible with Mac, iPhone, iPad, and iPod. This broad platform support allows you to use it across your Apple devices.

### How often is SFX Calc Premium updated?

The app was last updated on January 19, 2026, indicating a commitment to maintenance and potential future improvements. The latest version is 6.6.

### What is the user sentiment for SFX Calc Premium?

Based on the available data, SFX Calc Premium has a perfect rating of 5.0 stars from 2 ratings, suggesting a very positive user reception.

### Is SFX Calc Premium suitable for younger users?

SFX Calc Premium has an age rating of 4+, making it appropriate for a wide range of users, including students and professionals.

## Version history (last 5 releases)

### 6.7 — 2026-09-07

Enforce integer computation in Base N mode. Add option for backward compatibility

### 6.6 — 2026-01-19

Add UI setting to exchange the position of the display panel and the legend

### 6.4 — 2025-06-22

Add setting to keep mode upon restart the app

### 6.3 — 2025-06-16

Fix the issue of value entry after pressing the engineering notation key followed by the negation key

### 6.1 — 2025-05-20

Fix a display issue in the iPad device when bringing it back from the background or switching back from another app

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## More apps by Wai Kwong Lee

- [SFX Calc](https://appshunter.io/ios/app/sfx-calc/id1548427958)

All apps by Wai Kwong Lee: https://appshunter.io/developer/1548427960

## Related topics

[sfx calc premium](https://appshunter.io/ios/topics/sfx-calc-premium) · [sfx calc](https://appshunter.io/ios/topics/sfx-calc)

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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 2026-09-14.*