# Visual Trig Func — Visual trigonometric function!

> Visual tool for understanding and calculating trigonometric functions and their graphs. (iPhone/iPad app by yukihiro fujita.)

- Source: https://appshunter.io/ios/app/visual-trig-func/id645214237 (this page in markdown: same URL + `.md`)
- Developer: [yukihiro fujita](https://appshunter.io/developer/537078708)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 1.00/5 from 2 App Store ratings · 18 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 4 MB
- Languages: American English, Japanese
- Released: 2013-05-10
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/visual-trig-func/id645214237/reviews.md

## What is Visual Trig Func?

Do you know trigonometric functions? Or want to learn it? Generally it makes people to be complicated a little, but if you use Trig Func, this will help you to more easily understand!

Also this app is easy/quick to confirm the value of trig functions, so I wish this is really useful for students, teachers, developers and more!

*** Features ***
- Visual trig functions!
- Comfortable moving for calculations!
- Great lists(sin,cos,tan,csc,sec,cot)
- Images for the wave graphs

*** How to use it ***
[ Calc ]
You can drag a radius line between 0 to 90 degrees, and if you do that, it will move to be based on "Radius" and "Angle".
Also you can set any numbers up to text fields with segmented buttons. Such as if you edit Text1 with "X" button and Text2 with "Y" button, the triangle view will change to be based on "X" and "Y".
Which means, there are 6 cases.
( Radius - Angle )
( Radius - X )
( Radius - Y )
( Angle - X )
( Angle - Y )
( X - Y )

[ List ]
No need to explain about it. Just scroll it.
Oh, wait. You can change these values if you tap column names, like below...
Degrees --- Radian
sin --- csc(cosec)
cos --- sec
tan --- cot

[ Wave ]
There are 2 graphs, so if you tap the button of bottom right, the graph will change another one.
(sin, cos, tan) --- (csc, sec, cot)
Also you can tap anywhere for checking degrees and values.

I hope this app helps you, even a little bit.

## Key features

- Visual trigonometric functions
- Interactive radius and angle manipulation
- Comprehensive lists of trig ratios
- Wave graph visualizations
- Adjustable values via text fields
- Tap-to-check degree and value functionality

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Add Calculation 360!   (You can calc trig functions for over 90 degrees.) | $0.99 | one-time |


## Recent user reviews (10 of 18)

All indexed reviews: https://appshunter.io/ios/app/visual-trig-func/id645214237/reviews.md

### 3/5 — 入力し直しはアプリリセット

*2022-04-25, version 4.1*

iPhone7です。
1度入力したデータを修正出来ません。手動の角度変更は出来ます。
1度計算する毎にアプリリセットするのが苦でなければ使えます。

### 1/5 — 使えない

*2021-05-09, version 4.1*

y軸の数値をいれかえたら、二度目が使えない。課金したらいいかと思い、支払ったけど、やはり使えない。詐欺かい！

### 3/5 — 同じく

*2021-03-31, version 4.1*

iPhone8ですが、久々に使うとレビューの方と同じ症状が出ました。開いた時に入れれば問題ないが、続けて使う時は一つしか選択できない状態になります。
仕事でとても使うので改善して欲しい。

### 2/5 — 自分だけ？

*2021-01-29, version 4.1*

凄く便利でiPhoneに替えてから
ずっと使ってます

久々に使ったら
X,Y,R,θが上手く切り替え出来なくってる

とりあえず使い難い状態です

僕だけでしょうか？

### 1/5 — Aweful

*2017-08-27*

Struggled with it for 5 minutes and deleted. Intentionally poorly designed so that the adds interfere with navigating trig values, resulting in add clicks.  Find another app.

### 5/5 — 無いと困る

*2017-01-09, version 3.0*

仕事でとても助かっています。
インターフェースを有料でも良いので白バックに出来るととても見やすいと思います。

### 4/5 — 使いやすいけど、、、

*2015-11-28, version 3.0*

広告が邪魔、、。

### 5/5 — 簡単でいい

*2015-06-28, version 3.0*

使いやすいです。

### 3/5 — Nice but adverts?

*2014-12-26*

Really like the way this works and how it displays the 'scalable' unit circle. In-app purchase hasn't removed adverts which are really annoying. This means that I won't use the app in time. Shame really.

### 5/5 — お願いです

*2014-10-28, version 2.1*

課金したら、広告を非表示にできるようにしていただけないでしょうか？
よろしくお願いします。

## Frequently asked questions about Visual Trig Func

### What is Visual Trig Func?

Visual Trig Func is an educational application designed to help users understand and calculate trigonometric functions. It provides interactive visualizations of functions, their values, and wave graphs, making complex concepts more accessible.

### How does Visual Trig Func help with learning trigonometry?

The app allows users to visually explore trigonometric functions by manipulating radius lines and angles. It also provides lists of trig ratios and wave graphs, offering multiple ways to grasp the relationships between angles and their corresponding trigonometric values.

### What trigonometric functions are supported by Visual Trig Func?

Visual Trig Func supports the primary trigonometric functions: sine (sin), cosine (cos), tangent (tan), cosecant (csc), secant (sec), and cotangent (cot). Users can easily switch between these functions and their corresponding wave graphs.

### Can I calculate specific trigonometric values with Visual Trig Func?

Yes, you can. The app allows you to set specific numbers for radius, angle, X, and Y values through text fields. This enables precise calculations and a dynamic viewing of how changes in these parameters affect the trigonometric triangle and values.

### Does Visual Trig Func have ads?

Yes, Visual Trig Func contains advertisements. As a free application, it utilizes ads to support its development and continued availability to users.

### What devices is Visual Trig Func available on?

Visual Trig Func is available on iOS devices, including iPhone, iPad, and iPod. It is designed to be compatible with these Apple platforms.

### How often is Visual Trig Func updated?

Visual Trig Func was last updated on May 8, 2024, indicating a commitment to maintaining and improving the application. The latest version is 6.3.

### What is the age rating for Visual Trig Func?

Visual Trig Func has an age rating of 4+, making it suitable for a wide range of users, including younger students learning basic mathematical concepts.

## Version history (last 5 releases)

### 6.3 — 2024-05-08

- Some minor fixes

### 6.2 — 2024-05-07

- Haptic feedback added to some movements
- Changed some tab icons
- Other minor fixes

### 6.1 — 2023-04-22

- Adjusts some components
- Fixes other few things

### 6.0 — 2022-08-14

- Adjusts some components
- Improve calc/wave tab performance
- Adds 6 waves display feature
- Adds 1° scale mode in calc tab
- Available landscape mode(iPad)
- Available multitasking(iPad)
- Fixes other few things

### 5.1 — 2022-07-11

- Changes some objects
- Fixes other few things

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All apps by yukihiro fujita: https://appshunter.io/developer/537078708

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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 2026-06-01.*