# Calculator – Fast & Simple — Scientific, units & currency

> Scientific, units & currency (iPhone/iPad app by S4 IT Technologies.)

- Source: https://appshunter.io/ios/app/calculator-fast-and-simple/id6808944952 (this page in markdown: same URL + `.md`)
- Developer: [S4 IT Technologies](https://appshunter.io/developer/1142923065)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 9 MB
- Languages: American English
- Released: 2026-09-16
- Data updated: 2026-09-17
- User reviews in markdown: https://appshunter.io/ios/app/calculator-fast-and-simple/id6808944952/reviews.md

## What is Calculator?

A fast, clean calculator that does the everyday sums and the awkward ones too.

BASIC AND SCIENTIFIC
Add, subtract, multiply and divide with a keypad built for one-handed use. Switch to scientific for trigonometry, logarithms, powers, roots, factorials and constants.

CONVERTERS
Unit Converter for length, weight, temperature, area, volume, speed, time and data. Currency Converter with up-to-date rates for the currencies you actually use.

EVERYDAY TOOLS
Date Calculator for the days between two dates. Discount Calculator for what you really save. Tip Calculator for splitting the bill without arguing.

AI MATH SOLVER
Stuck on a problem? Ask in plain English and get a step-by-step solution, not just an answer. Algebra, calculus, geometry and statistics.

HISTORY
Every calculation is kept, so you can scroll back and reuse a result instead of typing it again.

MADE TO BE PLEASANT
Light and dark themes. Optional key sounds and haptics. No account, no sign-up, no clutter.


## Version history (last 1 release)

### 1.0 — 2026-09-16

No release notes.

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All apps by S4 IT Technologies: https://appshunter.io/developer/1142923065

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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 2026-09-17.*