Comparison

Frequency Generator vs KeyStart

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Adjustable frequency range (20 Hz - 20,000 Hz)
  • Simple and easy to use interface
  • Generates audio tones
  • No complex settings
Features
Read full description

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.

About

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.

Highlights
  • Choir pitch tool
  • A cappella group support
  • Vocalist tuning
  • Key selection
  • Chord and note playback
  • Singing in tune
Features
Read full description

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

Frequency Generator4 screens
KeyStart1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 8 level
Frequency Generator versus KeyStart: the parameters behind the verdict, then further details
ParameterFrequency GeneratorKeyStart
PriceFreeFree
Rating3.0 (2 ratings) — better1.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 14 monthsEvery 13 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better16.6
Further details — not scored
Size7 MB24 MB
Age rating4+4+
DeveloperKrzysztof GwiazdaBernhard Mitas

Customer experience

Frequency Generator

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

KeyStart

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Frequency Generator

No in-app purchases

None

KeyStart

No in-app purchases

Questions

Is Frequency Generator free?
Frequency Generator is free to download, with no in-app purchases.
Is KeyStart free?
KeyStart is free to download, with no in-app purchases.
Which has better reviews, Frequency Generator or KeyStart?
Frequency Generator is rated higher. Frequency Generator averages 3.0 out of 5 from 2 ratings, while KeyStart averages 1.0 from 1 ratings.
Do Frequency Generator or KeyStart have ads?
Neither Frequency Generator nor KeyStart shows ads.
Which is updated more often, Frequency Generator or KeyStart?
Frequency Generator ships an update every 14 months, and KeyStart every 13 months. Most recently, Frequency Generator was updated on October 24, 2026 and KeyStart on October 6, 2026.

Other comparisons