# EIEN

> Geometric calculator for parallelogram angles, area, perimeter, and diagonals. (iPhone/iPad app by IP TECH PROS INC..)

- Source: https://appshunter.io/ios/app/eien/id6472153002 (this page in markdown: same URL + `.md`)
- Developer: [IP TECH PROS INC.](https://appshunter.io/developer/1716680205)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 9.0 · 19 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2023-11-15
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/eien/id6472153002/reviews.md

## What is EIEN?

Welcome to EIEN

We insist on providing users with high-quality and convenient services, continuous improvement and continuous attention to users' needs.

The main functions include:

* Simple interface, good user experience, secure and easy-to-use!

* Calculate the Angle, Area, Perimeter, diagonal of the Parallelogram!

We insist on providing users with high-quality and convenient services, continuous improvement and continuous attention to users' needs.

Download and use the application. All suggestions and opinions are welcome!! We can certainly study this in future updates.

Thanks.

## Key features

- Calculate parallelogram angles
- Calculate parallelogram area
- Calculate parallelogram perimeter
- Calculate parallelogram diagonals
- Simple and secure interface
- Good user experience


## Frequently asked questions about EIEN

### What geometric properties can EIEN calculate for a parallelogram?

EIEN can calculate the angle, area, perimeter, and diagonal measurements of a parallelogram. It aims to provide a convenient and secure user experience for these calculations.

### Is EIEN free to use?

Yes, EIEN is available for free. There are no costs associated with downloading or using its core functionalities for calculating parallelogram properties.

### What devices is EIEN compatible with?

EIEN is currently supported on iPhone and iPod devices. It is designed to offer a good user experience on these platforms.

### How often is EIEN updated?

EIEN was last updated on November 15, 2023, with version 1.0.0. The developers are open to suggestions for future updates based on user needs.

### What is the age rating for EIEN?

EIEN has an age rating of 4+, making it suitable for a wide range of users. The app focuses on providing simple and secure utility functions.

### Does EIEN have ads?

The provided data does not specify if EIEN contains advertisements. However, its monetization model is listed as 'free', suggesting it may be ad-supported or rely on other means for revenue.

### How does EIEN compare to other geometry calculators?

EIEN focuses specifically on parallelogram calculations with a simple interface. While other apps might offer broader geometry functions, EIEN prioritizes ease of use and security for its specific purpose.

## Version history (last 1 release)

### 1.0.0 — 2023-11-15

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 2026-06-10.*