# Vowels Central Diphthong

> Vowels Central Diphthong (iPhone/iPad app by Blue Tree Publishing, Inc..)

- Source: https://appshunter.io/ios/app/vowels-central-diphthong/id731753490 (this page in markdown: same URL + `.md`)
- Developer: [Blue Tree Publishing, Inc.](https://appshunter.io/developer/496143325)
- Category: Education, Medical
- Price: $4.99
- Age rating: 4+
- Requires: iOS 11.0 · 31 MB
- Languages: American English
- Released: 2013-11-01
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/vowels-central-diphthong/id731753490/reviews.md

## What is Vowels Central Diphthong?

The Speech Articulation: Vowels Central/Diphthong app authored by Fred D. Minifie, Ph.D, provides valuable instructional/clinical tools for speech-language pathologists, otolaryngologists, speech scientists, linguists, teachers of singing and other professionals. The app includes five central and three diphthong vowel dynamic animations with sound plus a key view for each of the tongue shape and placement for the structural movements involved in the production of the vowels of American English.

•  Anatomy ID: as each part is touched, the part highlights and the part name and description text changes. Description text shows or hides on demand. Description text shows or hides on demand. 

- Anatomy view - 26 parts, includes nose, mouth and throat structure ID. Zoom and pans.

•  Highlight View: key view of the tongue shape and placement for five central and three diphthong vowels of American English.

- Central: /a/, /Λ/, /ә/, /ɝ/, /ɚ/  Diphthong: /αυ/, /αɪ/, /כɪ/

•  Animations: each vowel shows a lateral view of dynamic movements of the jaw, lips, tongue, velum (soft palate), and larynx needed for proper articulation of that vowel. Audio for each vowel sound is synchronized with the dynamic animations. Anatomy animation included.

•  Two finger pan of all animations and key animation pages.

•  Drawing Whiteboard feature:

- Drawing: freeform lines in red, blue, green or black hue. Change size by tapping on size panel

- Draw and text directly on active animation and video.

- Text: Change size by tapping on size panel, auto wrap, non-movable in red, blue, green or black hue.

- Eraser: touch and rub lines and text on whiteboard to erase.

- Trash: one tap deletes all whiteboard lines and text.

- Screenshot whiteboard direct to Photos App for easy email and printing.

•  iOS 6.0+ required, designed for iPad and iPhone.


The Speech Articulation: Vowels Front/Back app makes learning otitis media ear disorders easy. See example screen shots below. Get the app today!


## Version history (last 5 releases)

### 1.3.1 — 2023-08-30

Bug fixes, security update and performance improvements.

### 1.3 — 2020-06-03

Bug fixes, security update and performance improvements.

### 1.2 — 2019-12-12

Corrected issues with screenshot not completing in drawing feature
Updated permission dialog for screenshot in drawing feature
General feature enhancements and minor bug corrections

### 1.1 — 2016-11-10

Drawing White board updated
Freeform lines change size by tapping on size panel
Text change size by tapping on size panel
Update help page
Bug fixes and experience enhancements

### 1.0 — 2013-11-01

No release notes.

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## More apps by Blue Tree Publishing, Inc.

- [Ear ID](https://appshunter.io/ios/app/ear-id/id504379539)
- [Vocal Folds ID](https://appshunter.io/ios/app/vocal-folds-id/id541766674)
- [Swallow ID](https://appshunter.io/ios/app/swallow-id/id615125918)
- [Aspiration Disorders](https://appshunter.io/ios/app/aspiration-disorders/id615934052)
- [Oral Disorders](https://appshunter.io/ios/app/oral-disorders/id615938541)
- [Residue Disorders](https://appshunter.io/ios/app/residue-disorders/id615941080)

All apps by Blue Tree Publishing, Inc.: https://appshunter.io/developer/496143325

## Related topics

[vowels central diphthong](https://appshunter.io/ios/topics/vowels-central-diphthong) · [vowel practice](https://appshunter.io/ios/topics/vowel-practice)

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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 2026-09-08.*