# The Formula Calculator — Formula library & solver

> Offline formula library and calculator with unit conversion for technical fields. (iPhone/iPad app by Sidney Thom.)

- Source: https://appshunter.io/ios/app/the-formula-calculator/id6813788037 (this page in markdown: same URL + `.md`)
- Developer: [Sidney Thom](https://appshunter.io/developer/6813788039)
- Category: Reference, Education
- Price: Free (on sale, was $1.99)
- Age rating: 4+
- Requires: iOS 15.0 · 9 MB
- Languages: German (Germany), Arabic, Danish, American English, Finnish, French (France), Hebrew, Hindi, Indonesian, Italian and 19 more
- Released: 2026-09-25
- Data updated: 2026-10-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/the-formula-calculator/id6813788037/reviews.md

## What is The Formula Calculator?

Select a formula, enter the values – the app calculates the rest. Units convert automatically.

Formula Calculator is a formula library and a calculator in one. Instead of looking things up in a handbook and then calculating separately, both happen in the same view. Built for the trades, master craftsman training, engineering and study.

Over 200 formulas, including:
Geometry and areas, volume, mechanics and strength of materials, heat, fluid mechanics and pumps, electrical engineering, acoustics, hydraulics, chemistry and physics.

Use the formulas, instead of leaving everything to AI:
Periodic table (use molar mass directly), density table, building materials, formula symbols as in a technical handbook, unit converter with SI prefixes. Charts such as LogPH and h-x.

Search finds formulas, elements and groups – for example Ohm, area of a circle, alkali metals or the periodic table.

• Fully offline
• No account, no ads, no tracking
• Light and dark mode
• German and many other languages
• Saves recent calculations

Developed by a German master craftsman.

Available languages:
German, English, French, Spanish, Portuguese, Italian, Dutch, Polish, Czech, Slovak, Hungarian, Romanian, Croatian, Danish, Swedish, Norwegian, Finnish, Turkish, Russian, Ukrainian, Arabic, Hebrew, Hindi, Thai, Vietnamese, Indonesian, Chinese, Japanese, Korean

Also on Apple Watch: a simplified version for quick lookup or calculations with units.

## Key features

- Extensive formula library (200+)
- Automatic unit conversion
- Offline functionality
- Searchable formulas and elements
- Light and dark mode
- Multi-language support

## Is The Formula Calculator safe?

Not enough ratings yet to assess The Formula Calculator.

## Is The Formula Calculator legit?

The Formula Calculator has limited verification signals. The AppsHunter Legitimacy Score for The Formula Calculator is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/the-formula-calculator/id6813788037/reviews.md

### 5/5 — Top !!! Warum nicht früher

*2026-09-30*

Super App, einfach und gut um schnell mal was nach zu schauen

### 5/5 — Top Tool

*2026-09-29*

Übersichtlich und unkompliziert.

### 5/5 — Super hilfreiche App

*2026-09-26*

Die App ist wirklich mega. Sie ist super einfach zu verstehen und hilft mir extrem beim lernen. Man kann echt alles damit machen. 👍🏻

## Frequently asked questions about The Formula Calculator

### What is The Formula Calculator?

The Formula Calculator is a reference app that combines a comprehensive library of over 200 formulas with a built-in calculator. It's designed to help users quickly find and use formulas for geometry, mechanics, electrical engineering, and more, with automatic unit conversion.

### Does The Formula Calculator have ads?

No, The Formula Calculator is ad-free. The app explicitly states 'no ads, no tracking', providing an uninterrupted user experience.

### How much does The Formula Calculator cost?

The Formula Calculator is a paid app, priced at $1.99. This one-time purchase grants access to all its features and formulas.

### Can I use The Formula Calculator offline?

Yes, The Formula Calculator is fully offline. You do not need an internet connection to access its formula library or perform calculations.

### What devices is The Formula Calculator available on?

The Formula Calculator is available on iPhone, iPad, and iPod. A simplified version is also available for Apple Watch for quick lookups and calculations.

### What languages does The Formula Calculator support?

The Formula Calculator supports a wide range of languages, including German, English, French, Spanish, Portuguese, Italian, Dutch, and many others, making it accessible to a global audience.

### How often is The Formula Calculator updated?

The latest version, 1.2.6, was released on September 30, 2026, indicating recent development activity. The app was initially released on September 23, 2026.

### What kind of formulas are included in The Formula Calculator?

The app includes formulas for geometry and areas, volume, mechanics and strength of materials, heat, fluid mechanics and pumps, electrical engineering, acoustics, hydraulics, chemistry, and physics.

## Version history (last 4 releases)

### 1.3.3 — 2026-10-19

Bugs fixed - better design

### 1.2.6 — 2026-09-30

App languages added

### 1.2.5 — 2026-09-29

Arbeitskategorie und Design - diverse Fehler behoben

### 1.1.75 — 2026-09-23

No release notes.

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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 2026-10-25.*