# Calculator: Scientific & Units — Currency, Percent & History

> Currency, Percent & History (iPhone/iPad app by 彩月 姚.)

- Source: https://appshunter.io/ios/app/calculator-scientific-and-units/id6809291634 (this page in markdown: same URL + `.md`)
- Developer: [彩月 姚](https://appshunter.io/developer/6806793776)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16 · 58 MB
- Languages: American English, Arabic, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hebrew and 21 more
- Released: 2026-09-09
- Data updated: 2026-10-16

## What is Calculator?

Calculate everyday totals, work through scientific expressions and convert units in one place. All tools and 16 themes are free to use in this version, with no subscription required.

SCIENTIFIC WHEN YOU NEED IT
Use percentages, parentheses, powers, roots, trigonometry and logarithms. Switch between degrees and radians, preview results while typing and edit an expression without starting over. Memory keys and the previous answer help you keep calculating.

CONVERT UNITS AND CURRENCIES
Convert length, area, volume, mass, temperature, speed and more. Compare currencies for travel or shopping. Refresh exchange rates online, or use cached or bundled rates offline. Check the displayed update time; currency results are for reference.

KEEP YOUR CALCULATION HISTORY
Search past calculations, copy an expression or reuse a result. On a wide iPad layout, see your calculator and history side by side. Everyday arithmetic, scientific functions and unit conversion work offline.

SPLIT BILLS AND COUNT DAYS
Add a tip and split the total between people. Find the interval between two dates for everyday planning, trips and events.

MAKE IT YOUR CALCULATOR
Choose from 16 themes with cute cats, a corgi, a teddy bear, mecha, racing, planets and more. Try a theme with a working calculator, save favorites and apply your choice. Every theme supports light and dark appearance.

Adjust decimal places, key sounds and haptic feedback to suit your habits. History, favorites and preferences stay on your device.

The app interface supports 31 languages. Unsupported device languages fall back to English.

## Is Calculator safe?

Not enough ratings yet to assess Calculator.

## Is Calculator legit?

Calculator: Scientific & Units appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Calculator is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.0.2 — 2026-10-08

Improved portrait and landscape layouts, with a fixed numeric keypad and scientific functions grouped to fit your screen. Fixed clipped results and improved converters, history and theme previews on small screens and with larger text.

### 1.0.1 — 2026-09-11

Improved portrait and landscape layouts, with a fixed numeric keypad and scientific functions grouped to fit your screen. Fixed clipped results and improved converters, history, and theme previews on small screens and with larger text.

### 1.0.0 — 2026-09-10

No release notes.

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## More apps by 彩月 姚

- [Plant Identifier: Leaf Care](https://appshunter.io/ios/app/plant-identifier-leaf-care/id6807498896)
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- [PDF Scanner: Scan, OCR & Sign](https://appshunter.io/ios/app/pdf-scanner-scan-ocr-and-sign/id6809542033)
- [Math Practice: Mental Math](https://appshunter.io/ios/app/math-practice-mental-math/id6809700734)

All apps by 彩月 姚: https://appshunter.io/developer/6806793776

## Related topics

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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 2026-10-16.*