# Trivice — Triangle Calculator

> Calculates all unknown triangle values using graphical input and exports results. (iPhone/iPad app by Oliver Hahn.)

- Source: https://appshunter.io/ios/app/trivice/id324458005 (this page in markdown: same URL + `.md`)
- Developer: [Oliver Hahn](https://appshunter.io/developer/324458008)
- Category: Utilities, Education
- Price: $0.99
- Rating: 3.50/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 4 MB
- Languages: American English, German (Germany)
- Released: 2009-07-30
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/trivice/id324458005/reviews.md

## What is Trivice?

The formulary with the law of cosines can stay in the drawer: Trivice calculates the values of any given triangle.
The necessary parameters are:

- Three edges or
- Two edges and one angle or
- One edge and two angles

The input is made completely without the keypad by using the graphical controllers on the corners and edges. Fractions can also be set, for example for imperial units. The value of the active controller is shown in the display in the middle of the device.

In addition to all angles and sides, the area, height, perimeter, inner and outer circle are calculated. The result is shown graphical as well as numeric and can be exported as an image or pdf file. The last calculations can be recalled from the history.

A detailed manual is included.

Also available is Trivice HD for the iPad.

## Key features

- Calculates all triangle values
- Graphical input controllers
- Exports results as image/PDF
- Calculation history
- Includes detailed manual
- Supports fractions for units

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/trivice/id324458005/reviews.md

### 5/5 — Great and helpful

*2017-09-26*

It helped me often at my DIY projects. 
Stay tuned, I heard from the developer that he will update the app for iOS11, so don't delete it if it does not work for a while. The update might take til Oct/Nov '17.
Edit: the update for iOS 11 just got live! Great job, thx much!

### 5/5 — Simple clean and effective

*2011-01-11*

Does what it says on the tin. Perfect for my needs. Not overly complex. Nice interface.

### 3/5 — good start

*2010-02-18*

i like your app. feature requests:

* allow numeric input
* allow verticies to be dragged on 'display' screen
* once you have a triangle 'set up' w/b nice to make changes w/o having to start over. perhaps some way to remember the data entered and modify one of those 3 or 4 values. highlihgt entered data in gold?

yours in triangularity...

## Frequently asked questions about Trivice

### What triangle parameters can Trivice calculate?

Trivice calculates all angles and sides, as well as the area, height, perimeter, and inner and outer circles of any given triangle.

### How do I input triangle data into Trivice?

Input is made completely without the keypad by using the graphical controllers on the corners and edges. Fractions can also be set for imperial units.

### Can I save or export my triangle calculations from Trivice?

Yes, the result is shown graphically as well as numerically and can be exported as an image or PDF file.

### Does Trivice have a history feature?

Yes, the last calculations can be recalled from the history feature within the app.

### What devices is Trivice compatible with?

Trivice is available for iPhone and iPod. A separate version, Trivice HD, is also available for iPad.

### How often is Trivice updated?

The latest version, 3.1, was released on November 18, 2020. The app was originally released on July 30, 2009.

### What is the price of Trivice?

Trivice is a paid application, priced at $0.99.

### Does Trivice have ads?

No, Trivice does not contain advertisements.

## Version history (last 5 releases)

### 3.1 — 2020-11-18

Export of the results as image or PDF
Calculation during input
Preview of the calculated triangle on the edit screen
Request for a rating (at max one time per version)

### 3.0 — 2020-02-05

Design update
Support for iOS 13 and Dark Mode
Integration of Imprint and Privacy Policy
Refined Quick Help

### 2.0.2 — 2017-09-26

Support for iOS 11

### 2.0.1 — 2013-09-17

Adjustments for iOS7

### 2.0 — 2013-07-10

Refined User Interface
Display of results during construction
New help system

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## More apps by Oliver Hahn

- [Polytrome](https://appshunter.io/ios/app/polytrome/id367282309)
- [Quinterval](https://appshunter.io/ios/app/quinterval/id373810100)
- [Trivice HD](https://appshunter.io/ios/app/trivice-hd/id375604287)
- [Field of Depth](https://appshunter.io/ios/app/field-of-depth/id662879911)
- [Trilight - Trivice Light](https://appshunter.io/ios/app/trilight-trivice-light/id670194444)

All apps by Oliver Hahn: https://appshunter.io/developer/324458008

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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 2026-06-10.*