Frequency Generator vs KeyStart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency Generator
This utility app provides a simple and straightforward tuning fork. It allows users to generate any frequency between 20 Hz and 20,000 Hz, limited only by the device's speaker and human hearing.
- Adjustable frequency range (20 Hz - 20,000 Hz)
- Simple and easy to use interface
- Generates audio tones
- No complex settings
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Frequency Generator - Tone and Sound Generate audio tones, explore sound frequencies, and find the right pitch with a simple, easy-to-use frequency generator. Whether you are tuning a musical instrument, checking a reference pitch, experimenting with audio frequencies, or exploring sound, this app gives you convenient control over the tone you hear. FREQUENCY GENERATOR Generate sound at an adjustable frequency and explore different pitches. Use the frequency slider or enter a value directly to find the tone you need. TONE GENERATOR WITH VOLUME CONTROL Adjust the sound volume to suit your needs. Fine-tune your listening experience while experimenting with different frequencies and pitches. TUNING FORK AND MUSICAL PITCH REFERENCE Use your phone as a digital tuning fork and pitch reference for musical practice. The standard reference tone of 440 Hz corresponds to A4, also known as concert A. This is a widely used reference for tuning musical instruments. Explore other frequencies to find the tones you need. EXPLORE AUDIO FREQUENCIES Discover how changing frequency affects the pitch of a sound. Move between lower and higher tones and experiment with different audio frequencies for music, sound exploration, and everyday listening. WHY USE FREQUENCY GENERATOR? - Adjustable sound frequency - Direct frequency input - Adjustable volume - Animated visual feedback while generating tones - Convenient audio pitch reference - Simple controls for quick access to sound settings WHO IS IT FOR? Musicians can use a reference tone while practising and tuning instruments. Music students can explore pitch and the relationship between frequency and musical notes. Audio enthusiasts can experiment with generated tones and different frequencies. Everyday users can quickly generate a tone at a frequency of their choice. SIMPLE AND EASY TO USE Open the app, select your frequency, adjust the volume, and generate your tone. Whether you need a tuning reference or a flexible frequency and sound generator, the essential controls are right at your fingertips. Download Frequency Generator and explore the world of sound, one frequency at a time.
KeyStart
This utility app provides a reliable pitch tool for choirs, a cappella groups, and vocalists. Select your desired key, play the correct chord or note, and ensure your group starts singing in tune.
- Choir pitch tool
- A cappella group support
- Vocalist tuning
- Key selection
- Chord and note playback
- Singing in tune
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Give your choir the perfect starting note every time. KeyStart is a simple, reliable pitch tool for choirs, a cappella groups, and vocalists — choose your key, play the chord or note, and start singing in tune.
Screenshots
Verdict
The clearest difference is rating: Frequency Generator at 3.0 against KeyStart's 1.0. On price, ratings volume, update cadence and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Frequency Generator holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Frequency Generator ships an update every 14 months, KeyStart every 13 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.
| Parameter | Frequency Generator | KeyStart |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | 1.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 14 months | Every 13 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15 — better | 16.6 |
| Further details — not scored | ||
| Size | 7 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Krzysztof Gwiazda | Bernhard Mitas |
Customer experience
Frequency Generator
KeyStart
In-app purchases
Frequency Generator
No in-app purchases
KeyStart
No in-app purchases
Questions
Is Frequency Generator free?
Is KeyStart free?
Which has better reviews, Frequency Generator or KeyStart?
Do Frequency Generator or KeyStart have ads?
Which is updated more often, Frequency Generator or KeyStart?
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