# Vowel Practice — For accent neutralization > Calculates and plots formant frequencies of spoken vowels for analysis. (iPhone/iPad app by William Entriken.) - Source: https://appshunter.io/ios/app/vowel-practice/id799183655 (this page in markdown: same URL + `.md`) - Developer: [William Entriken](https://appshunter.io/developer/558586671) - Category: Utilities, Education - Price: $7.99 - Age rating: 4+ - Requires: iOS 26.0 · 1 MB - Languages: American English - Released: 2014-01-22 - Data updated: 2026-08-01 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/vowel-practice/id799183655/reviews.md ## What is Vowel Practice? This application calculates and plots the formant frequencies of spoken vowels. The user should speak a word containing a single vowel, and we will analyze and show results. First two formant frequencies are used to graphically show the location of spoken vowel on a standard vowel diagram. An indicator light changes its color to display the status of the application. This is made to assist with speech therapy and language learning as well as other research topics. ## Key features - Calculates formant frequencies - Plots vowel locations on a diagram - Analyzes spoken vowels - Indicator light for status - Assists speech therapy - Supports language learning ## Recent user reviews (9 of 9) All indexed reviews: https://appshunter.io/ios/app/vowel-practice/id799183655/reviews.md ### 5/5 — Self directed speech therapy *2023-06-17* I was looking for a tool that would help me correct my overly centralized vowels. This app provides the same feedback as a speech therapist, but at a fraction of the cost. ### 5/5 — works *2021-12-25* It works but why does it skip 3khz on the scale at the bottom? ### 1/5 — Garbage, don't buy *2017-09-02* Doesn't work at all ### 1/5 — Trash *2017-03-06* This app simply doesn't work. I was hoping for something like praat. This is just a hot mess and a waste of money. I hope they debug or whatever they need to do to get this app working... ### 1/5 — Tim Birkett *2016-03-23* This app simply doesn't work - on either my iPad or my iPhone 6s. A complete waste of money. ### 1/5 — Terrible *2016-02-17* Crashes when doing anything. Useless. ### 1/5 — Completely broken mess. Do. Not. Buy. *2015-10-11* I was willing to give this developer a shot, but my experience is identical to the only other review listed. The program shows only the "retrying" message and refuses to do anything else. I suggest that the developer look into this issue, or refund the money of those who've purchased this disappointing mess. ### 1/5 — Linguist here. No response at all. *2015-09-25* Does not measure any input at all. Using on iPad2. Constantly says "retrying". Will be glad to change review status. I know developers cannot respond to reviews in the App Store. Please respond at dshenge at Hotmail dot com ### 1/5 — Useless *2014-06-04* I don't like leaving negative reviews without first contacting the maker but I could not find a contact. This app is useless and that for 7.99! The black dot stays in the "u" area all the time - no matter who speaks or what you say. The help is no help and there are not really instructions either. I wasted my money:( ## Frequently asked questions about Vowel Practice ### What is Vowel Practice used for? Vowel Practice is designed to calculate and plot the formant frequencies of spoken vowels. It assists users in analyzing vowel sounds graphically, making it beneficial for speech therapy, language learning, and research purposes. ### How does Vowel Practice analyze spoken vowels? When you speak a word containing a single vowel, Vowel Practice analyzes the sound and uses the first two formant frequencies to graphically display the vowel's location on a standard vowel diagram. ### What devices is Vowel Practice compatible with? Vowel Practice is available for iPhone, iPad, and iPod touch devices, offering broad compatibility within the Apple ecosystem. ### What is the price of Vowel Practice? Vowel Practice is a paid application, available for a one-time purchase of $7.99. ### How often is Vowel Practice updated? The latest version, 2.1, was released on October 10, 2025, indicating active development and updates for the application. ### What is the age rating for Vowel Practice? Vowel Practice has an age rating of 4+, making it suitable for a wide range of users, including children and adults. ### Does Vowel Practice have ads? No, Vowel Practice does not contain advertisements. As a paid application, it offers an uninterrupted user experience. ### Can Vowel Practice be used offline? The description does not specify offline functionality, but the core features of calculating and plotting formant frequencies suggest it can be used without an internet connection once installed. ## Version history (last 5 releases) ### 2.1.3 — 2026-05-04 Rebuild ### 2.1.1 — 2026-05-04 Update build ### 2.1 — 2025-10-10 New product name ### 2.0 — 2025-10-08 Recompile in new version of Xcode because old version is not allowed anymore ### 1.3.5 — 2021-12-22 Recompile in new version of Xcode because old version is not allowed anymore ## Apps similar to Vowel Practice | App | Rating | Price | Category | | --- | --- | --- | --- | | [NetCheck Connectivity](https://appshunter.io/ios/app/netcheck-connectivity/id1570703771) | 5.0 (1) | Free | Utilities | | [VoiceViewer](https://appshunter.io/ios/app/voiceviewer/id6504754605) | — | Free | Utilities | | [EyeSound Vocal](https://appshunter.io/ios/app/eyesound-vocal/id6476980675) | — | Free | Utilities | | [Repeat Checklist MONOLIST](https://appshunter.io/ios/app/repeat-checklist-monolist/id1612361641) | 5.0 (3) | Free | Utilities | | [Domotica My Home LE](https://appshunter.io/ios/app/domotica-my-home-le/id465268345) | — | Free | Utilities | | [My Rhyming Words](https://appshunter.io/ios/app/my-rhyming-words/id6451431245) | — | Free | Utilities | ## More apps by William Entriken - [Echo — Speech Therapy](https://appshunter.io/ios/app/echo-speech-therapy/id558585608) - [Who's the Impostor?](https://appshunter.io/ios/app/whos-the-impostor/id784258202) - [Pizza-Man](https://appshunter.io/ios/app/pizza-man/id931174800) - [8 Ball Answer](https://appshunter.io/ios/app/8-ball-answer/id995732766) All apps by William Entriken: https://appshunter.io/developer/558586671 --- *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 2026-08-01.*