# Instant Unit Calc — Simple, No-Fuss Calculator

> Simple, No-Fuss Calculator (iPhone/iPad app by Keisuke Yamakawa.)

- Source: https://appshunter.io/ios/app/instant-unit-calc/id6795980524 (this page in markdown: same URL + `.md`)
- Developer: [Keisuke Yamakawa](https://appshunter.io/developer/1281004284)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 34 MB
- Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more
- Released: 2026-09-14
- Data updated: 2026-10-09
- User reviews in markdown: https://appshunter.io/ios/app/instant-unit-calc/id6795980524/reviews.md

## What is Instant Unit Calc?

Simple Calculator combines a calculator and a unit converter in one app --
see your result converted into other units as you type, no switching required.

Key features:
- Handles complex expressions with parentheses, not just the four basic operations
- An always-visible conversion panel across 5 categories: length, weight, volume, area, and temperature
- Mixed-unit math like "2 cm + 3 kg" -- results are kept per unit instead of forcing a wrong conversion
- Real dimensional analysis: "3 m × 4 m = 12 m²" -- multiplying and dividing changes the unit correctly
- Cross-category multiplication/division shows a synthesized unit, like "10 mL ÷ 2 kg = 5 mL/kg"
- Define your own custom units, like "1 gold coin = 17 silver coins, 1 silver coin = 23 copper coins"
- Three themes: Light, Dark, and follow system setting
- A focused, uncluttered interface -- no extra features to get in your way


## Version history (last 1 release)

### 1.0 — 2026-09-14

No release notes.

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## More apps by Keisuke Yamakawa

- [Mölkky Partner](https://appshunter.io/ios/app/molkky-partner/id1624916910)
- [錬金熟語](https://appshunter.io/ios/app/id6739363331)
- [Malatang Counter](https://appshunter.io/ios/app/malatang-counter/id6799380532)

All apps by Keisuke Yamakawa: https://appshunter.io/developer/1281004284

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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 2026-10-09.*