# Trgnmtry — Interactive trig unit circle

> Interactive unit circle app for visualizing trigonometric measures and angles. (iPhone/iPad app by Andrew McKnight.)

- Source: https://appshunter.io/ios/app/trgnmtry/id1146667288 (this page in markdown: same URL + `.md`)
- Developer: [Andrew McKnight](https://appshunter.io/developer/1888628988)
- Category: Education, Reference
- Price: Free
- Rating: 3.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: English
- Released: 2016-09-10
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/trgnmtry/id1146667288/reviews.md

## What is Trgnmtry?

Watch as all of the trigonometric measures are drawn in their geometric relations as you drag your finger around the unit circle. You can choose which measures to see, and set specific angle intervals that can be shown. Looks beautiful in iOS Light or Dark mode!

## Key features

- Interactive unit circle
- Visualize trigonometric measures
- Customizable angle intervals
- Supports light and dark mode
- Geometric relation display

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/trgnmtry/id1146667288/reviews.md

### 1/5 — Useless

*2021-09-23*

Where is numbers ????? A mathematical app without numbers ?? Dude !

## Frequently asked questions about Trgnmtry

### What is Trgnmtry?

Trgnmtry is an educational app that allows users to interactively explore trigonometric measures and their geometric relationships on a unit circle. You can customize which measures are displayed and set specific angle intervals.

### How does Trgnmtry help with learning trigonometry?

By visually demonstrating how trigonometric measures change as you drag your finger around the unit circle, Trgnmtry provides an intuitive understanding of concepts like sine, cosine, and tangent. It highlights the geometric relations in real-time.

### Can I customize the angles shown in Trgnmtry?

Yes, you can set specific angle intervals to be shown on the unit circle. This feature allows for focused study of particular ranges or patterns within trigonometric functions.

### Does Trgnmtry work on both iPhone and iPad?

Yes, Trgnmtry is supported on iPhone and iPad devices. It is designed to look beautiful in both iOS Light and Dark modes, adapting to your device's settings.

### What is the rating for Trgnmtry?

Trgnmtry has a rating of 3.0 stars based on 4 user ratings. This indicates a mixed but generally positive reception from its user base.

### When was Trgnmtry last updated?

The latest version of Trgnmtry is 1.3.1, which was last updated on March 31, 2026. This suggests ongoing development and maintenance for the application.

### What is the age rating for Trgnmtry?

Trgnmtry has an age rating of 4+, making it suitable for a wide range of users, including younger learners exploring mathematical concepts.

### Does Trgnmtry have ads?

No, Trgnmtry does not contain advertisements. It is a free application without any in-app purchases or ads, offering an uninterrupted learning experience.

## Version history (last 5 releases)

### 1.3.1 — 2026-03-31

Updated for iOS 26

### 1.3 — 2020-04-06

- Support for iPhone X form factors.
- Dark Mode support.

### 1.2 — 2017-03-15

- Angle snapping to evenly divisible intervals.
- Improved handling of rotation and multitasking events.
- Enabled rotation for iPhones.

### 1.1 — 2016-10-03

- Toggle between clockwise and counter-clockwise oriented angles.
- Turn certain trigonometric measures off or on to focus just on the ones you're interested in.

### 1.0 — 2016-08-25

No release notes.

## Apps similar to Trgnmtry

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Smart Belarusian Dictionary](https://appshunter.io/ios/app/smart-belarusian-dictionary/id1606872160) | 3.0 (1) | Free | Education |
| [Zuokabi: Learn Spanish](https://appshunter.io/ios/app/zuokabi-learn-spanish/id1615570420) | 5.0 (22) | Free | Education |
| [NSE Panthers](https://appshunter.io/ios/app/nse-panthers/id1611182360) | 4.7 (3) | Free | Education |
| [Wanna help word memorization](https://appshunter.io/ios/app/wanna-help-word-memorization/id1608671720) | — | Free | Education |
| [A-Level Biology App](https://appshunter.io/ios/app/a-level-biology-app/id1613078220) | 1.0 (1) | Free | Education |
| [CiNii Research, KAKEN, IRDB](https://appshunter.io/ios/app/cinii-research-kaken-irdb/id1618150440) | — | Free | Education |

## More apps by Andrew McKnight

- [Delaunay Triangulator](https://appshunter.io/ios/app/delaunay-triangulator/id657596160)

All apps by Andrew McKnight: https://appshunter.io/developer/1888628988

---

*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 2026-07-07.*