9 Best 20 Hz Apps For Your Phone
| App Name | Best For | Key Features | AC Rating | Pricing |
|---|---|---|---|---|
| Life7 | Complete mental wellness and sound therapy | Delta, Theta, Alpha, Beta & Gamma waves; 432 Hz & 528 Hz frequencies; Backdrop mode for mixing soundscapes | 4.9/5 | Free trial, then subscription plans |
| Frequency Sound Generator | Precise frequency control | 20 Hz to 20,000 Hz range; Multiple waveforms; Custom presets | 4.5/5 | Free with premium upgrade |
| BrainWave by Banzai Labs | Binaural brainwave entrainment | 37 binaural programs; Pure tones with 20 frequencies; iTunes integration | 4.6/5 | One time purchase |
| Binaural Beats Therapy | Open source sound therapy | Real time binaural generation; Multiple presets; Free to use | 4.3/5 | Free |
| Atmosphere: Relaxing Sounds | Customizable sound mixing | 100+ sounds; Binaural beats section; Import your own sounds | 4.4/5 | Free with premium option |
| Brain.fm | AI powered focus music | Personalized brainwave training; Multiple music genres; Focus and sleep modes | 4.5/5 | Subscription based |
| Binaural Beats Meditation | Studio quality frequencies | Hand crafted tracks; No AI generated content; Category browsing | 4.4/5 | Subscription based |
| Tone Generator Pro | Audio testing and generation | 1 Hz to 22 kHz range; Sweep generator; 16 real time channels | 4.2/5 | Free with in app purchases |
| SoundHealz | Guided sonic meditation | Delta wave deep sleep; Stress reduction sessions; Progress tracking | 4.3/5 | Free with subscription |
#1. Life7 – Best for Complete Mental Wellness and Sound Therapy
Life7 is an all in one mental wellness app that stands out from the crowd. It offers everything you need for sound therapy in one place. This app has over 1,200 editorial mentions and users have logged more than 312 million meditation minutes.
What makes Life7 special is its complete range of frequency options. You get Delta, Theta, Alpha, Beta, and Gamma wave music. The app also includes pure binaural beats and isochronic tones. Plus, you can explore 432 Hz, 528 Hz, and Solfeggio frequencies for deep healing.
Key Features:
- Green, White, Brown, and Pink noise options for perfect ambient sound
- Backdrop Mode lets you mix soundscapes with meditations and sleep stories
- Daily sessions including meditation, music therapy, and wisdom content
What I like: I really enjoy how Life7 combines so many features into one app. The Backdrop Mode is a game changer because you can layer different sounds together. The sleep stories work great for both adults and kids. I also love the gamified approach where you earn XP and unlock new content. The CBT and hypnotherapy sessions feel professional and actually help.
What I don’t like: The free content is a bit limited. You will need to upgrade to really unlock the full experience. This might feel frustrating at first if you want to try everything before paying.
Pricing: 7 day free trial available. Weekly, monthly, and yearly subscription plans offered with frequent special deals.
Platforms: iOS and Android
#2. Frequency Sound Generator – Best for Precise Frequency Control
Frequency Sound Generator by Hoel Boedec is one of the most downloaded apps in this category. It has over 5 million users who trust it for generating exact frequencies. The app works great for hearing tests and audio experiments.
You can adjust frequencies from 20 Hz all the way up to 20,000 Hz. The controls are simple and easy to use. Just drag your finger to raise or lower the frequency.
Key Features:
- Multiple waveforms including sine, square, sawtooth, and triangle
- Background playback so sounds keep playing when you minimize the app
- Save custom presets for quick access to your favorite frequencies
What I like: The precision of this app impresses me. You can adjust frequency in 1 Hz steps which is really helpful for finding the exact tone you want. The visual wave display looks cool and helps you understand what you are hearing. Works great for testing speakers and headphones too.
What I don’t like: The interface feels pretty basic compared to other apps. It focuses on function over style. Some users report that very low frequencies sound weird on phone speakers, but that is more of a hardware issue.
Pricing: Free version available. Premium subscription unlocks extra features.
Platforms: iOS and Android
#3. BrainWave by Banzai Labs – Best for Binaural Brainwave Entrainment
BrainWave has been the top selling binaural app for over 14 years. Stanford Neuroscientist Dr. Andrew Huberman even recommends it on his podcast. The app uses advanced multi stage programs to guide your brain through different states.
This app stands out because it uses progressive entrainment. That means it gradually shifts your brainwaves instead of jumping to one frequency. This approach feels more natural and works better.
Key Features:
- 37 different binaural programs for sleep, focus, meditation, and more
- Pure Tones section with 20 specific frequencies including 40 Hz Gamma
- Works alongside Spotify, audiobooks, or your iTunes music
What I like: The quality of the binaural tones is excellent. I can really feel the difference compared to free apps. The ability to combine it with other audio apps is brilliant. Each program has multiple stages that transition smoothly. The one time purchase with no subscriptions is refreshing.
What I don’t like: This app is only available on iOS which locks out Android users. The interface looks a bit dated compared to newer apps. No free version to try before buying.
Pricing: One time purchase with no in app purchases or subscriptions needed.
Platforms: iOS only (iPhone and iPad)
#4. Binaural Beats Therapy – Best for Open Source Sound Therapy
Binaural Beats Therapy is the original free binaural app that has been helping people for years. Since it is open source, you know exactly what you are getting. No hidden features or sneaky subscriptions.
The app generates binaural beats in real time rather than playing recordings. This means the beats play continuously without interruption for as long as you want.
Key Features:
- Real time binaural beat generation not just pre recorded sounds
- Multiple presets for relaxation, sleep, and focus
- Open source code for complete transparency
What I like: The fact that this app is completely free and open source is amazing. It does what it promises without any tricks. The beats actually work for helping me sleep. I appreciate that the developer is honest about what binaural beats can and cannot do.
What I don’t like: The sessions have limited duration options. Some are only 20 to 60 minutes which can wake you up when they stop. The design looks outdated and the interface could use some polish.
Pricing: Completely free with optional donation.
Platforms: Android only
#5. Atmosphere: Relaxing Sounds – Best for Customizable Sound Mixing
Atmosphere gives you over 100 different sounds to mix and match. You can create the perfect soundscape for any situation. The app also includes binaural beats and isochronic tones for brain stimulation.
Many people use this app for sleep, meditation, yoga, and study. The mixing feature sets it apart from basic sound apps.
Key Features:
- 100+ high quality sounds organized by environment like beach, forest, and city
- Import your own audio files to mix with built in sounds
- Timer function to automatically stop playback while you sleep
What I like: The mixing feature is fantastic. I love creating unique soundscapes by combining rain with campfire and distant thunder. The baby sleep feature with brown noise is incredibly useful for parents. The interface looks clean and does not strain your eyes at night.
What I don’t like: The app sometimes shuts off randomly which can wake you up. The pricing structure is confusing because it is not always clear what you get with premium. Some sounds have inconsistent volume levels.
Pricing: Free with ads. Premium version available for ad free experience.
Platforms: iOS and Android
#6. Brain.fm – Best for AI Powered Focus Music
Brain.fm uses artificial intelligence to create personalized music for your brain. The app has years of research behind it. Many people swear by it for focus and productivity.
Unlike binaural beats, Brain.fm uses neural phase locking technology. This approach claims to be more effective for helping you concentrate.
Key Features:
- AI generated music personalized to your brain
- Multiple modes for focus, relaxation, and sleep
- Cross platform availability including web access
What I like: The focus mode genuinely helps me work longer without getting distracted. The music sounds pleasant and not like annoying tones. The scientific backing gives me confidence that it actually works. Using it for 5 plus years has made a real difference in my productivity.
What I don’t like: The subscription price is higher than many alternatives. You need an internet connection for the best experience. The AI generated music might feel too repetitive for some listeners.
Pricing: Subscription based with different plan options.
Platforms: iOS, Android, and Web
#7. Binaural Beats Meditation – Best for Studio Quality Frequencies
This app comes from the original binaural beats meditation brand established in 2010. Every track is created by humans and professional audio engineers. No AI or recycled royalty free tracks here.
The focus on quality over quantity makes this app special. Clinics, therapists, and coaches have trusted it for over 15 years.
Key Features:
- 100% original handcrafted music
- No ads for uninterrupted listening
- Categories for relaxation, sleep, mind power, and health
What I like: The audio quality is noticeably better than other apps. Having no ads creates a peaceful experience. The simple interface means I can start relaxing within seconds. The human touch in the music makes it feel more authentic.
What I don’t like: Currently only available on iOS with no Android version yet. The subscription model means ongoing costs. The content library is smaller compared to some competitors.
Pricing: Subscription starting from about $4.16 per month on annual plan.
Platforms: iOS only
#8. Tone Generator Pro – Best for Audio Testing and Generation
Tone Generator Pro is a powerful tool for anyone who needs precise frequency generation. With over a million downloads, it has proven itself useful for many purposes. From testing speakers to dog training, this app does it all.
The sweep generator and multitone features set it apart from basic apps. Professionals and hobbyists alike find it valuable.
Key Features:
- Frequency range from 1 Hz to 22 kHz
- Sweep generator for testing audio equipment
- 16 real time channels for complex sound generation
What I like: The accuracy of the frequencies is impressive. Testing my headphones and speakers has never been easier. The sweep function helps me find problem frequencies in my audio setup. Great value for anyone interested in audio.
What I don’t like: The focus is on technical use rather than relaxation. Not ideal for meditation or sleep purposes. The interface is more functional than beautiful.
Pricing: Free with in app purchases for premium features.
Platforms: iOS and Android
#9. SoundHealz – Best for Guided Sonic Meditation
SoundHealz combines binaural beats with guided meditation. The app teaches you how to meditate while using frequencies to enhance your experience. Many users report positive effects after just five minutes.
The app walks you through the meditation process step by step. This makes it perfect for beginners who do not know where to start.
Key Features:
- Delta brain waves for deep sleep and healing
- Guided and unguided meditation options
- Progress tracking with graphs and charts
What I like: The guided aspect helps me stay on track during meditation. The combination of frequencies with instruction works really well. I appreciate the daily challenges that keep me improving. The stress reduction sessions genuinely help after tough days.
What I don’t like: The interface feels a bit cluttered at times. Some sessions require understanding concepts that are not well explained. Loading times can be slow on older devices.
Pricing: Free version with limited features. Subscription unlocks full access.
Platforms: iOS and Android
Can You Actually Hear 20 Hz Sounds?
20 Hz sits right at the bottom edge of human hearing. Most people can feel these super low frequencies more than they hear them. Your body senses these vibrations in your chest and bones.
Phone speakers usually cannot produce true 20 Hz sounds. You need good headphones or a subwoofer to experience these frequencies properly. Many meditation apps use binaural beats to create the perception of low frequencies in your brain even when the actual tones are higher.
If you want to experience 20 Hz fully, invest in quality headphones. The experience becomes much more powerful and effective for relaxation or focus purposes.
What Are the Benefits of Low Frequency Sounds?
Low frequency sounds like 20 Hz are linked to Delta brain waves. These brain waves happen during deep sleep and restoration. Listening to low frequency sounds may help with relaxation and stress relief.
Some people report better sleep quality after using 20 Hz frequencies. Others find these sounds helpful for meditation and calming anxiety. The vibrations can feel soothing to your nervous system.
Science is still exploring the full benefits of sound therapy. While results vary from person to person, many users find real value in incorporating low frequencies into their wellness routine.
How Do I Choose the Right 20 Hz App?
Start by thinking about your main goal. Do you want better sleep, improved focus, or stress relief? Different apps excel at different things. Life7 works great as an all in one solution, while specialized apps might suit specific needs.
Consider your budget and platform. Some apps are free while others require subscriptions. Make sure the app works on your phone before getting excited about features. Read user reviews to see what real people experience.
Try free versions or trials before committing. Most quality apps offer some free content. Test how the sounds feel to you personally since everyone responds differently to frequencies.