Frequency vs HemiSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency
Generate various sound waves, including sine, square, sawtooth, and triangle, with adjustable frequencies from 1Hz to 22000Hz. Visually observe animated sound waves and control volume. Useful for testing hearing, speakers, instruments, and even cleaning water from speakers.
- Generate sine, square, sawtooth, triangle waves
- Adjustable frequency (1Hz-22000Hz)
- Animated sound wave visualization
- Volume control (0-100%)
- Note selection
- Speaker cleaning function
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Are you producing? Want to sound test your speakers or tune your instruments? Or simply, do you want to generate sounds and listen to the generated sounds in different frequencies? Well, then you need a frequency sound generator to produce sound waves in different frequencies. Introducing Frequency Sound Generator! Frequency: Generator Sound player lets you generate a sine, square, sawtooth or triangle sound wave with a frequency between 1Hz and 22000Hz (Hertz). It produces accurate tone & soundwaves while being simple and easy to use. Additionally, pick from a wide variety of notes by taping the notes icon. No matter if you need to sound test and generate high frequency sounds or low frequency sounds, our frequency tone generator is your #1 best solution. EASY CONTROL Frequency: Sound Generator allows you to easily change the soundwaves from the main menu. Simply tap on the sound wave icon and pick between sine, square, sawtooth or triangle. ANIMATED SOUND WAVE You’ll love the animated sound wave function which visually represents the sound for a given frequency. You can change waveform by clicking on a round button at the left side and get a different sound and animated wave. ADJUST FREQUENCY & VOLUME Adjust the sound generating frequency easily by dragging the yellow dot. Make use of the - & + buttons for added adjusting precision. Additionally, control the volume of the generated sounds from 0-100%. NUMEROUS USES: This sound generating app can be used in multiple use cases: - Test your hearing. A human being is capable of hearing frequencies in the average range of 20Hz-20000Hz. This range is getting smaller by age, so it’s interesting to sound test your hearing capabilities. - Test speakers and headphones for the high end (treble) and low end (bass) tones. - Use this app as an instrument tuner when playing or producing. - Cleaning water from the speaker. Since sound is making small vibrations it can help to shake off unwanted water from your speakers. - Find your tinnitus frequency. NOTE: Since mobile phones are not high-quality audio sources and in-built speakers may vary in quality, sometimes users can hear sounds at very low or high frequencies even beyond the scope of human hearing. That noise is not sound of a given frequency but static or “parasite” noise generated by your mobile device. For the best experience use a pair of good quality headphones.
HemiSync
This app generates binaural beats and isochronic tones to aid in meditation and relaxation. Explore various sound frequencies and pre-set combinations for personal wellness routines, with customizable timers and controls.
- Binaural beat and isochronic tone generation
- Customizable frequency ranges (Delta, Theta, Alpha, Beta, Gamma)
- Pre-configured audio presets
- Session timer functionality
- Solfeggio frequency options
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Explore Audio Frequency Meditation HemiSync is an audio frequency generator that creates binaural beats and isochronic tones for meditation and relaxation practice. The app allows you to experiment with different sound frequencies that some users find helpful for their personal wellness routines. What This App Does: Generates customizable audio tones and beats Offers preset frequency combinations based on popular meditation practices Provides session timers and audio controls Includes binaural beat and isochronic tone generation modes Features: Frequency range selection (Delta, Theta, Alpha, Beta, Gamma) Adjustable beat frequencies and carrier tones Pre-configured audio presets Session timer functionality Solfeggio frequency options (396Hz, 417Hz, 432Hz) Please Note: This app is for entertainment and personal exploration purposes. It generates audio tones based on concepts from audio meditation practices. Any effects experienced are subjective and individual. Privacy Policy - https://enginezero.tech/app-privacy-policy/ Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Frequency at 4.7 against HemiSync's 4.2. Frequency also leads on in-app purchases (none vs 1) and ratings volume (340 vs 9). HemiSync's advantage is ads (none vs shown) and review sentiment (100% vs 70%). On price, monetization model 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
Both are free to download. HemiSync sells 1 in-app purchase, starting at $0.99 per month. Frequency asks for nothing beyond the download.
Frequency holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Frequency has 340 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 70% of Frequency's written reviews are positive against 100% of HemiSync's, so the app with the better star average is not the one people write more warmly about.
Frequency ships an update fortnightly, HemiSync every 5 weeks. The most recent releases landed on October 10, 2026 and September 29, 2026 respectively.
| Parameter | Frequency | HemiSync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (340 ratings) — better | 4.2 (9 ratings) |
| Positive reviews | 69.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 340 — better | 9 |
| Update frequency | Fortnightly — better | Every 5 weeks |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 8 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Lucija Jaksic | EngineZero |
Customer experience
Frequency
HemiSync
Bugs and requests
Frequency
Reported bugs
4 issues- Slider snaps to certain numbers, skipping decimals
- Missing specific frequencies (431Hz, 432Hz, 128Hz)
- Settings/controls off-screen on smaller devices
- App crashes when switching between applications
Requested features
9 requests- Manual text input for precise frequency selection
- Ad-free paid version option
- Timer feature for sessions
- Digital tuning with +/- buttons on main screen
- Background image customization or frequency healing chart
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- Decimal frequency support
- Increased decibel/amplification levels
- Language localization (Turkish requested)
- Continuous background play without app switching interruption
HemiSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Frequency
No in-app purchases
HemiSync
- Premium$0.991 Month
Questions
Is Frequency free?
Is HemiSync free?
Which has better reviews, Frequency or HemiSync?
Do Frequency or HemiSync have ads?
Which is updated more often, Frequency or HemiSync?
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