Frequency Sound Generator
November 23, 2025
More About Frequency Sound Generator
🎵 Main features
Single Oscillator
Generate pure tones from 1 Hz (infrasound) to 22,000 Hz (ultrasound) with precise frequency control. Choose from multiple waveforms including sine, square, triangle, and sawtooth. Perfect for audio testing, speaker calibration, tinnitus relief, or scientific experiments.
Multi-Oscillators
Combine multiple oscillators to create complex harmonic sounds and chords. Layer different frequencies and waveforms to experiment with acoustic phenomena and interference patterns.
Synthesizer
Craft your own sound and play musical notes on a full-featured synthesizer with customizable tuning frequency (A4). Perfect for musicians, composers, and music students.
Binaural Beats
Create and experiment with binaural beats for relaxation, sleep or meditation. Best experienced with headphones.
Sweep Generator
Generate frequency sweeps, ideal for speaker testing, room acoustic analysis, and finding resonant frequencies. Add multiple sweeps and create loops.
Noise Generator
Generate white noise and other colored noises. Includes advanced effects like auto-pan and breathing for enhanced relaxation and focus. Great for sleep, concentration, or masking unwanted sounds.
Bass/Subwoofers Test
Test your audio system's low-frequency capabilities. Find out how low your subwoofers, headphones, or speakers can go.
Speaker Cleaner
Remove water from your phone's speakers using specific sound frequencies. If your speaker sounds muffled after water exposure, this tool can help eject the liquid.
DTMF Tone Generator
Generate dual-tone multi-frequency signals used in telecommunications.
SFX Generator
Create random retro-style sound effects like coins, lasers, explosions, jumps, and more. Save your favorite sounds as WAV files.
⚙️ Advanced features
• Precision: Supports decimal values (e.g., 7.83 Hz, 432.1 Hz, 528.5 Hz)
• Advanced Effects: Vibrato (FM), Tremolo (AM), Ring Modulation (RM), PWM
• Stereo Control: Independent left/right audio balance
• Presets: Save and manage your favorite configurations
• Audio Export: Export your sounds as high-quality audio files
• Background Mode: Continue playing while using other apps
• Timer: Automatically stop playback after a set duration
⚠️ Safety & Usage information
Hear Safely
Always use this app responsibly and keep volume at reasonable levels to protect your hearing and audio equipment. Low frequencies may sound quiet, so if you increase volume to hear bass tones better, remember to lower it before playing higher frequencies—perceived loudness varies significantly across the frequency spectrum.
Mosquito Repellent Disclaimer
Scientific studies have consistently shown that ultrasonic frequencies are NOT effective at repelling mosquitoes. While some apps claim to work as mosquito repellents by generating ultrasounds (15,000-22,000 Hz), there is no reliable evidence supporting this use case.
🎯 Use cases
• Audio equipment testing and calibration
• Speaker and headphone frequency response testing
• Tinnitus relief and sound therapy
• Meditation and relaxation with binaural beats
• Sleep assistance with noise generation
• Musical instrument tuning and ear training
• Physics and acoustics education
• Dog whistle and ultrasonic experiments
• Room acoustics analysis
• Phone speaker water removal
• Sound effect creation
Whether you are an audio professional, musician, student, or just curious about sound, Frequency Generator provides powerful tools in one convenient app.
Latest Version
5.1.3
November 23, 2025
Hoel Boedec
Tools
Android
8,488,127
Free
com.boedec.hoel.frequencygenerator
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User Reviews
Norman “Falody” Harrington
2 weeks ago
I forgot to update the app lol. anyways,great app, there's a whole synthesiser now!!!
Amin Unknown
2 weeks ago
I LOVE this app ,I'm having this for 5 years now ! and I use it everyday ✨
A Google user
6 years ago
This app, as far as frequency and/or tone generators goes, is by far the coolest and most fun to play with compared to others of similar nature. It's fun to play with on your phone or if you have very nice quality stereos and speakers this is really really cool to see what your system can actually do in order to properly tune it to prevent speakers from clipping. Awesome, good work!! Don't stop here you're creative and intelligent i want to see some more cool apps
HU Buhler
2 years ago
Excellent app, after trying many others this one is truly the best. While the cost of removing the Ads is extremely low, this app does so much more than most others much more expensive (and with extremely intrusive ads.) • Plays in the background while other sound is playing. • Let's you safe presets and label them. • Can play harmonics of up to three frequencies. • White, pink and brown noise generators. • Preset notes. • Binaural beats. • and more..
A Google user
5 years ago
Edit. This is a fantastic app for many different reasons... The range of options being the main one.. Also how it can be used in many different ways.. For me it's to ease the pressure of tinnitus which has become more than I can handle alone.. After a bit of research into tinnitus and some of the treatment methods.. I must admit I've found the triple oscillation option to somewhat ease the pressure of which only people who suffer from the problem can understand.. 5 ⭐⭐⭐⭐⭐.
pioneers of sound
4 years ago
I love your work, great app but you need to remove the noise from the tones, they will cause tinnitus at even low volume, your signal to noise ratios are all wrong, if you sort this I will pay good money for it as its a great tool...but cannot use it as it is, Please take a look. Also screen colour options would be good along with the ability to run 4 tones would be even better. Cheers
Sam Constible
5 years ago
This is not only fun, but a very useful and accessible app. If you like to experiment in scientific ways with electronics and audio, you need a frequency generator and this will give you a very good one at that. A very wide range of frequency is possible, limited only by the audio circuits and speaker in your device. Sine, square, triangle, and sawtooth waveforms are all possible, and can be tuned precisely to any musical note - making this app useful for musique concrete production techniques.
Kyle Thomson
2 years ago
This is the best frequency generator on the app store for sure! Update: just looked at all the low ratings complaining about ads.. lmao! I was gunna pay the less than $5 instantly just because that's what you do when you hate ads. At least it's super cheap to remove ads forever. Broke people complaining about ads lmfao not even five bucks come on.. It lets you run 3 diff frequencies at the same time! Wow it's exactly what I been looking for. Had to do a good review for once.
Andreas Putlitz
9 months ago
Theoretically not bad, but it sometimes plays ad music in the background, which you can't stop. Makes it unusable. Also, will sometimes randomly stop the sound. Then you have to restart the app. Big plus: Can run in the background, so you can play the sound even when the phone is locked. UPDATE: No ads with sound anymore, plus also other sound apps get randomly killed by the system.
Aaron Wiles
1 week ago
HOEL MY MAN, YOUR APP IS A MASTERPIECE SO GRATEFUL AND HUMBLED TO RECEIVE SUCH A CROSS OVER FROM THE OLD WORLD TO THE NEW WORLD TOOL EVEN FREE! IMAGINE THAT!
God
2 weeks ago
I've had this app for years. Simple to use, does exactly what you expect it to do,but now .... now it's even greater. Thank you developer , you are awesome 😎
Almost Ahero
1 week ago
the apps new updates are great ,I love all the new stuff,I bought the whole app it's worth it ,,I use the b beats are I mainly only use 513 2 or 528 1 that works for me at sleep best app extremely happy with my purchase
Anupam Wankhede
2 weeks ago
very nice updates , we would still like to the frequencies of standard notes. if you can add a page for natural 2nd 3rd 4th, 5th, 6th 7th doubles, half frequencies with volume control. that would be revolutionary for Indian classical musicians
Jonathan Bruce
3 weeks ago
Recent update problems with deleted copy and paste decimal math .....it only keeps 4spaces of decimal math... And also recent multi app copy paste frequency generator app pretty much... Nedded compatibility... Maby a phone problem or software adaptability... Idk.. Free user on both multiapp and Frequency generator app... Only good thing is recent update kept my presaves...
py haguier
1 week ago
This app delivers the most accurate frequencies, especially with multi-oscillators, the algorithm behind is impressive, whatever low, high frequencies mixed together, the audio output adapts perfectly, even not achievable with audacity.... sugestions: would be great to extend the number of frequencies in the multi-oscillators up to 10, I would pay for that UPDATE: thanks for the 10 multi-oscillators, upgraded to pro!
Jack Frost
3 years ago
Frequency Generator provides a simple, easy to use platform. This enables me to perform a wide range of frequency combinations and oscillations. There's even some fun sound effects to play with at the farthest right hand option, in the overhead que. And if you don't agree with me, your opinion means little to nothing to me anyway. Opinions are like bellybuttons, everybody has one.... Well, I guess robots don't have bellybuttons... But robots don't have opinions either.... Do they?
Derek Blessum
7 months ago
Epic app, I literally use it 2 hours a day in the background, and now sleep so 10. Purchase removes all traces of ads. Bonus: if you go to your phone's accessibility settings > sound and enable mono, the binaurals become isochronics. Plus then you can change the balance for said isochronic to affect one or the other frontal lobe of brain more or exclusively. Opposite to ear. Would be super if you could add a couple more length options to the shutoff timer for sleep, like 5, 6 and 7 hour.
Arron Jennings
6 months ago
Developer doesn't reply. The main thing I would like to see added is the ability to import and export presets. My current phone that I saved my presets on cannot be rooted and some of my other devices do not transfer the presets when restoring from a Google backup. It would be nice if the ability to do more than 3 frequencies at a time in the multi frequency generator was added. Also if the ability to go higher than 40hz for the bass frequency in the binary beats generator was added.
Kaz Art
2 years ago
works great on an old lgv20. I purchased the app to support the developer because it works so well for my needs. It has so many controls, and the paid version adds more. I really like the frequency sweep that plays each frequency span youve input in the time you want. Awesome! And having 3 noise choices is perfect. I tried 4 other apps and chose to keep this one.
Mark Starr
1 year ago
Pretty good. Easy interface. I haven't tested the accuracy yet. I HAVE purchased the paid version (I support developers). It would be an improvement to put the timer on the main interface, and possibly add the timer setting to the preset. And, when selecting a preset, show the name on the interface. But for a $2.99 app I'm satisfied with this purchase.
