Comparison

Audio Function Generator PRO vs Frequency Generator

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

Head to head
About

Audio Function Generator PRO

Generate various audio test tones, including sine, square, and sawtooth waves. Explore frequency and volume sweeps, custom presets, and different types of noise. Advanced settings allow for fine-tuning signal parameters and creating complex multi-tone sequences.

Highlights
  • Generate sine, square, triangular, and sawtooth tones
  • Frequency and volume sweep generation
  • Customizable presets and configurations
  • Multiple noise types (White, Pink, Violet, etc.)
  • Advanced signal parameter control
  • Multi-tone and dual function generation
Features
Read full description

This is the highly recommended and praised Function Generator App - an amazingly great and powerful tone generator. Enriched with a vast amount of features yet it is extremely intuitive and designed for simplicity. Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years. So, … what can you do with this App? • PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth. • PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency). • PLAY VOLUME SWEEPS (from minimum to maximum volume). • Try the SWEEP REPEAT / WOBBLE function. • Try the MUSIC TONES PLAYBACK. • Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION! • Or create your own CUSTOM PRESETS! • And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function. • Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported. The Function Generator is AMAZINGLY INTUITIVE and SIMPLE! AND THESE ARE THE ADVANCED SETTINGS/FEATURES: => Extending The Frequency Range (1Hz - 21kHz) => Extending The Sweep Times (0.1s - 600s) => Changing Min/Max Slider Frequency Ranges => Changing Max Sweep Time Slider Range => Changing Signal Amplitude => Enabling Of The Sweep Repeat / Wobble Function => Frequency Slider Setting to Linear or Logarithmic => Left/Right Channel Individual Selection => Permanently Saving Custom Presets => Saving Of Endless Number Of Audio Configurations => Phase Out Setting (custom phase shift of the generated signal) => BPM (Beats per Minute) Feature => Dual Function Generator => MultiTone Generator (playback of up to eight individual tones) => Background Theme Selection (Light/Dark) Check out the new Tutorial page: www.ee-toolkit.com/audio-function-generator

About

Frequency Generator

Enhance sleep and focus with scientifically engineered sound frequencies. This app offers customizable modes for deep slumber and peak concentration, utilizing binaural and isochronic beats. Enjoy an intuitive interface and offline access to boost your well-being and productivity.

Highlights
  • Sleep Mode with Delta & Theta frequencies
  • Focus Mode with Alpha & Beta frequencies
  • Binaural and Isochronic beats
  • Customizable duration and volume
  • User-friendly interface
  • Offline Mode
Features
Read full description

Introducing the Frequency Generator App, your new best friend for snoozing like a baby and concentrating like a caffeine-fueled squirrel! Are you tossing and turning like a pancake at a brunch buffet, or do you find your attention span rivaling that of a goldfish? Fear not! This app is here to serenade your brain with soothing sounds and focus-enhancing tones, turning your chaotic mind into a zen garden of productivity. So, plug in, chill out, and prepare to conquer that to-do list like a boss! Frequency Generator Features: SLEEP MODE: - Tired of counting sheep that have apparently gone on vacation? Enter Sleep Mode: your personal insomnia-busting ninja! - Select from a delightful buffet of brainwave frequencies like Delta and Theta to coax your mind into a deep slumber. (No sheep required.) - Adjust your snooze fest with customizable settings for duration and volume—because even your sleep deserves a personalized touch! FOCUS MODE: - Want to channel your inner productivity wizard? Focus Mode is here to sprinkle some brain-boosting magic dust on your concentration! - Tap into Alpha and Beta brainwave frequencies—science-approved enhancers of cognitive prowess. - Set timers that will keep you in the zone, ensuring that "procrastination" remains just a distant memory (or a Netflix binge for later). BINAURAL BEATS: - Get ready to groove with the Frequency Generator App! Our fancy binaural and isochronic beats will have your brain dancing to the rhythm of productivity. - These beats are engineered for maximum effectiveness, so you'll be riding the wave of genius in no time! User-Friendly Interface: - Our sleek design is so intuitive, even your grandma could navigate it while knitting! - Quick-start options and presets mean you can dive right in—no PhD in frequency science required! Offline Mode: - No Wi-Fi? No worries! The Frequency Generator App is your trusty sidekick, ready to deliver your favorite frequencies wherever you roam. It’s like having a personal DJ in your pocket, minus the questionable dance moves! SUBSCRIPTION AND TERMS When you download the app you can opt into a 7-day free trial. Frequency Generator offers auto-renewing monthly/yearly/weekly subscription options for access to the app's features and content. Your subscription will automatically renew at the end of each term and payment will be charged through your iTunes account. You can turn off auto-renew at any time from your iTunes account settings but refunds will not be provided for any unused portion of the term. To avoid renewal, you must cancel at least 24 hours before your subscription or trial ends. Your account will be charged for renewal within 24 hours prior to the end of the current period. Any unused portion of a free trial period will be forfeited if you purchase a subscription. Make the most of your downtime and supercharge your productivity with Frequency Generator App. Experience the power of brainwave synchronization and witness the transformative effects on your sleep and focus. Achieve better sleep, heightened focus, and an improved quality of life today. Terms of Use: https://canonicalized.com/includes/terms-and-conditions.html

Screenshots

Audio Function Generator PRO4 screens
Frequency Generator4 screens

Verdict

The call

The clearest difference is price: Frequency Generator at Free against Audio Function Generator PRO's $9.99. Audio Function Generator PRO's advantage is review sentiment (88% vs 47%) and in-app purchases (none vs 12). On ratings volume, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Frequency Generator is free to download; Audio Function Generator PRO costs $9.99 up front. Frequency Generator sells 12 in-app purchases, starting at $4.99 per 7 days. Audio Function Generator PRO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator PRO holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 269 and 471 respectively. Written reviews point the same way: 88% of Audio Function Generator PRO's written reviews are positive against 47% of Frequency Generator's.

UpkeepUpdate frequency

Audio Function Generator PRO ships an update every 6 weeks, Frequency Generator every 3 weeks. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard7 real differences · 3 level
Audio Function Generator PRO versus Frequency Generator: the parameters behind the verdict, then further details
ParameterAudio Function Generator PROFrequency Generator
Price$9.99Free — better
Rating4.8 (269 ratings) — better4.4 (471 ratings)
Positive reviews87.9% of reviews — better47.0% of reviews
Number of ratings269471 — better
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better17.0
Further details — not scored
Size13 MB206 MB
Age rating4+4+
DeveloperThomas GruberBoss Web SRL

Customer experience

Audio Function Generator PRO

All ratings269 ratings
Positive94.8%
Neutral2.6%
Negative2.6%
Written reviews58 reviews
Positive87.9%
Neutral5.2%
Negative6.9%

Frequency Generator

All ratings471 ratings
Positive83.2%
Neutral3.4%
Negative13.4%
Written reviews66 reviews
Positive47.0%
Neutral3.0%
Negative50.0%

User reviews

Audio Function Generator PRO

From 269 App Store ratings

What we love

  • ✨ Superb craftsmanship and work
  • 🚀 Excellent performance on older devices
  • 💡 History feature is a great addition
  • 👍 Versatile and powerful app
  • 🎶 Great for binaural beats and sound creation

Room to improve

  • 📉 Linear sweep is useless
  • ❓ Missing PWM functionality
  • ❓ Missing Terzrauschen (third-octave noise)
  • 🐛 Volume button issues
  • 🐛 GUI is bad

Frequency Generator

From 471 App Store ratings

What we love

  • 🚀 Straightforward app
  • 🚀 Reliable app
  • 🚀 Easy to use
  • 🚀 Works just right
  • 🚀 Relaxing to use

Room to improve

  • 🐛 Doesn't work
  • 🐛 Timer doesn't work
  • 🐛 Unreliable
  • 🐛 Stops in background
  • 🐛 Wrong numbers displayed

Bugs and requests

Audio Function Generator PRO

Reported bugs

6 issues
  • Volume button issues (jumps up and down, displays wrong level)
  • Update crashes on iPad Air2 when changing screens
  • App opens AppStore repeatedly after purchase
  • Buttons don't respond, settings don't keep
  • Frequencies stick, program is useless
Show 1 more
  • App stops too much

Requested features

19 requests
  • Logarithmic sweeps and frequency slider scale
  • PWM functionality
  • Terzrauschen (third-octave noise)
  • Ping-pong sweeps in Multitone windows
  • Sweeping of noise/adding noise in Multitone sweep with sweeping bandpass filter
Show 14 more
  • Audio plugin (AU, AAX, VST)
  • Responsiveness for MacBook use
  • Simultaneous recording of generated signals
  • Panning function for tones and sweeps
  • Ability to save Multitone configurations
  • Phase shift functionality
  • Higher frequency range (up to 24kHz)
  • Dual mode sweep function
  • Taper function
  • Extended time for sweeps (6-8 hours)
  • Ability to stay at selected frequency for several minutes
  • Spectrum analyzer
  • Separate control for left and right channels
  • 8-hour program for sleep entrainment

Frequency Generator

Reported bugs

4 issues
  • Timer shuts off after 30 seconds
  • Subscription issues
  • Free trial doesn't work
  • Frequency-Spectrum issues

Requested features

5 requests
  • Add AirPlay support
  • Increase frequency range up to 15 kHz
  • Add more sound options
  • Allow custom frequency selection
  • Improve user instructions

In-app purchases

None

Audio Function Generator PRO

No in-app purchases

12 purchases

Frequency Generator

Subscriptions11
  • Weekly Subscription$4.997 Days
  • Monthly Subscription$9.991 Month
  • Yearly Subscription Discount$9.991 Year
Show 8 more
  • Yearly Subscription Discount$19.991 Year
  • Discount Best Value$24.991 Year
  • Yearly with 30 day 50% off1 Month trial$24.991 Year
  • Yearly Discount POPULAR$29.991 Year
  • Free Trial7 Days trial$29.991 Year
  • Yearly Subscription$39.991 Year
  • Yearly Subscription7 Days trial$39.991 Year
  • Annual Subscription7 Days trial$39.991 Year
One-time1
  • Lifetime$149.99

Questions

Is Audio Function Generator PRO free?
Audio Function Generator PRO costs $9.99, with no in-app purchases.
Is Frequency Generator free?
Frequency Generator is free to download, with in-app purchases available.
Which has better reviews, Audio Function Generator PRO or Frequency Generator?
Audio Function Generator PRO is rated higher. Audio Function Generator PRO averages 4.8 out of 5 from 269 ratings, while Frequency Generator averages 4.4 from 471 ratings.
Do Audio Function Generator PRO or Frequency Generator have ads?
Frequency Generator shows ads; Audio Function Generator PRO does not.
Which is updated more often, Audio Function Generator PRO or Frequency Generator?
Audio Function Generator PRO ships an update every 6 weeks, and Frequency Generator every 3 weeks. Most recently, Audio Function Generator PRO was updated on September 30, 2026 and Frequency Generator on September 29, 2026.

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