Vowel Practice vs Tone Gen Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vowel Practice
Analyze spoken vowels by calculating and plotting their formant frequencies. Speak a word with a single vowel to see its graphical representation on a standard vowel diagram, with an indicator light showing the application's status. Useful for speech therapy, language learning, and research.
- Calculates formant frequencies
- Plots vowel locations on a diagram
- Analyzes spoken vowels
- Indicator light for status
- Assists speech therapy
- Supports language learning
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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.
Tone Gen Pro
Create various audio signals, including single tones, sweeps, and merged sounds, with extensive parameter control. Ideal for students, musicians, educators, and audio professionals exploring sound.
- Generate single type signals (sine, square, noise)
- Create sweep (chirp) signals (linear/exponential)
- Generate click signals with adjustable duty cycle
- Merge multiple tones and sweeps
- Frequencies up to 20 kHz
- Extensive parameter control
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Generate audio signal of different shapes with many parameters and options. You can generate frequencies up to 20 kHz of audio signal. If you are curious student about sound after a physics class, music instruments hobbyist/professional, a teacher, or a professional in audio equipment, this app is for you ! You can generate: - Single type signal (sinusoidal, square, noise, etc) - Sweep (chirp) signal (linear or exponential) - Click: ON-OFF sine wave with any duty cycle and ON frequency - Merged sound of any number of tones or sweeps
Screenshots
Verdict
The clearest difference is review sentiment: Tone Gen Pro at 75% against Vowel Practice's 18%. Tone Gen Pro also leads on price (Free vs $7.99) and rating (4.5 vs 1.0). Vowel Practice's advantage is in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Tone Gen Pro is free to download; Vowel Practice costs $7.99 up front. Tone Gen Pro sells 1 one-off in-app purchase. Vowel Practice asks for nothing beyond the download.
Tone Gen Pro holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Tone Gen Pro has 48 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 18% of Vowel Practice's written reviews are positive against 75% of Tone Gen Pro's.
Vowel Practice ships an update every 4 months, Tone Gen Pro every 3 months. Both last shipped on October 24, 2026.
| Parameter | Vowel Practice | Tone Gen Pro |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.5 (48 ratings) — better |
| Positive reviews | 18.2% of reviews | 75.0% of reviews — better |
| Number of ratings | 1 | 48 — better |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 44 MB |
| Age rating | 4+ | 12+ |
| Developer | William Entriken | Ibrahim Al-Sammarraie |
Customer experience
Vowel Practice
Tone Gen Pro
In-app purchases
Vowel Practice
No in-app purchases
Tone Gen Pro
- Tone Gen Pro Full$1.99
Questions
Is Vowel Practice free?
Is Tone Gen Pro free?
Which has better reviews, Vowel Practice or Tone Gen Pro?
Do Vowel Practice or Tone Gen Pro have ads?
Which is updated more often, Vowel Practice or Tone Gen Pro?
Other comparisons
