SVV

SVV

Subjective Visual Vertical

0 ratings
1 review
Free

Details

  • Released
  • Updated
  • July 13, 2019
  • September 7, 2026

Features

SVV screenshot #1 for iPhone
SVV screenshot #2 for iPhone
SVV screenshot #3 for iPhone
SVV screenshot #4 for iPhone
SVV screenshot #5 for iPhone
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About

This app measures your perception of verticality to assess gravity perception and vestibular function. It uses a simple line adjustment task to calculate deviations from the true vertical, aiding in the detection of vestibular asymmetry.

Measures subjective visual vertical
Evaluates gravity perception
Detects vestibular asymmetry
Adjusts perceived vertical line
Calculates mean deviation and standard deviation
Supports remote and game controllers
Show original description
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What's New in SVV

3.4

September 7, 2026

The rotation angle for screen taps, MFi controllers, and the Elecom remote control, which previously differed, has been standardized to 0.25 degrees per operation.

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User reviews

アップデートありがとうございます

アップデートされ、測定可能となりました!
しかし、なぜか回転するバーの色が赤でなくグレーとなっています。そのため、仕方なく古いバージョンのままの端末を使っています。
研究に使わせていただいています。さらなる修正をお願いいたします。

Response from developer

前後に5度以上傾くと警告音を鳴らし決定不能としていました。警告音に加えて、垂直線を灰色に変化させ、消音の状態でも傾きすぎがわかる様にしました。

Developer apps

FAQ

What is SVV used for?

SVV is used to measure the difference between your perceived vertical and the true vertical. This helps evaluate gravity perception mediated by the otolith organs and vestibular pathways, and can detect asymmetry in vestibular function.

How does SVV work?

You use an audio/video remote control or a game controller to adjust a displayed line until it appears perfectly vertical. The app repeats this 10 times to calculate your mean deviation and standard deviation from the true vertical.

Is SVV free to use?

Yes, SVV is available for free. There are no in-app purchases or advertisements associated with its use.

What devices support SVV?

SVV is supported on iPhone, iPad, and iPod devices. It is designed for Apple's iOS ecosystem.

What is the age rating for SVV?

SVV has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content.

How often is SVV updated?

The latest version of SVV is 3.4, and it was last updated on September 7, 2026. This suggests a relatively active development cycle for the application.

Can I use a game controller with SVV?

Yes, SVV supports a variety of game controllers, including those for Nintendo Switch, PlayStation, and Xbox, in addition to audio/video remote controls.

Who developed SVV?

SVV was developed by Kuroda ENT Clinic, a developer focused on medical applications.