Comparison

Lambda vs Sonic Pitch Sound Generator

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

Head to head
About

Lambda

This app helps musicians and sound engineers convert between musical notes, frequencies, and wavelengths. It features a dynamic fader, built-in oscillator, and frequency tracker with waveform display. Customize tuning standards and speed of sound for precise audio analysis.

Highlights
  • Convert notes, frequencies, wavelengths
  • Dynamic fader for real-time adjustment
  • Built-in oscillator with waveform
  • Frequency tracker with waveform
  • Customizable tuning standards
  • Adjustable speed of sound
  • Share data via standard methods
Read full description

Musicians and Sound Engineers. Musical Notes and Frequencies and Wavelengths. Now there's an app from dgApps to convert between them all. The app features a sliding fader to dynamically change frequency, wavelength and musical note, with locks to step through standard third octave frequencies or whole musical notes. There's a built in oscillator so you can hear the frequency, and a frequency tracker so the app can tell you the frequency. Both the oscillator and the frequency tracker display the audio waveform. A settings section allows for different tuning standards, and variations in the speed of sound. Lambda can also receive calculated Speed of Sound in Air values from another dgApps app, Cair. Lambda is now a universal app, equally at home on an iPhone as on an iPad. In Split Mode on an iPad device, side by side with Cair, the calculated Speed of Sound in Air is passed in real time to the Lambda app. Lambda allows you to share frequency/wavelength/note data via all the usual sharing methods.

About

Sonic Pitch Sound Generator

Generate precise sound waves with adjustable frequencies and various waveform types. Use it for audio testing, insect repulsion, pet training, or as a prank tool. Features include a decibel meter and stereo sound tests.

Highlights
  • Adjustable sine, square, triangle, and sawtooth waveforms
  • Precise frequency control from 0Hz to 25kHz
  • Wave visualization
  • Insect and mosquito repellent tones
  • Dog whistle functionality
  • Stereo and bass sound tests
  • Real-time decibel meter
Features
Read full description

Sonic Wave provides sine tones and you could easily control the exact frequencies. Swipe your finger up and down to raise or lower the frequency of the tones, and directly check the frequency by professional wave visualization. Take full control of your sound with our latest update! We’ve expanded your toolkit with new waveform types—including Square, Triangle, and Sawtooth—giving you more versatility for audio testing, experiments, and cleaning. Plus, our new precision frequency adjustment with customizable sensitivity lets you fine-tune tones with pinpoint accuracy. What can I use it for? 1. Use Sonic Wave to generate different frequencies to drive insects away or produce white noises and pitch noises. 2. This app allows you to generate tones with range from 0Hz to Ultrasonic 25kHz frequency. 3. It can be used as dog whistle to train your dog, make your dog come or go away. 4. Also you can use it to stop your neighbor's dog from barking. 5. It can be used as a prank tool to annoy your classmates or friends. 6. It can be used as a repel mosquitos tool. 7. Stereo Sound Test: Easily test the left and right channels of your iPhone or iPad to ensure perfect stereo sound. 8. Bass Test: Evaluate your device’s bass performance with high-precision bass tones. 9. Decibel Meter (dB Meter): Measure the sound level around you in real time using your device’s microphone. Perfect for checking noise levels at home or in public. 10. Camera dB Test: Use your iPhone or iPad’s camera to visualize decibel levels for an added layer of precision. It’s a tiny and handy tool you need in your pocket, just download it and enjoy it! Subscription Information: Sonic Pitch Sound Generator offers an auto-renewing yearly subscription Premium at $19.99 USD/year and $5.99/week to provide you with unlimited access to all features, No Ads and premium features while you maintain an active subscription. Payment will be charged to the payment method connected to your iTunes Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after purchase. Terms of service: http://pixelfoxes.com/sonic/sonic_terms_of_use.html Privacy policy: http://pixelfoxes.com/privacy_policy.html

Screenshots

Lambda4 screens
Sonic Pitch Sound Generator4 screens

Verdict

The call

The clearest difference is price: Sonic Pitch Sound Generator at Free against Lambda's $2.99. Sonic Pitch Sound Generator also leads on update cadence (every 5 weeks vs every 54 months) and ratings volume (1.8K vs 1). Lambda's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 2). On device support and iOS requirement 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

Sonic Pitch Sound Generator is free to download; Lambda costs $2.99 up front. Sonic Pitch Sound Generator sells 2 in-app purchases, starting at $5.99 per 7 days. Lambda asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Lambda holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Sonic Pitch Sound Generator has 1.8K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of Lambda's written reviews are positive against 71% of Sonic Pitch Sound Generator's.

UpkeepUpdate frequency

Lambda ships an update every 54 months, Sonic Pitch Sound Generator every 5 weeks. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.

Scorecard8 real differences · 2 level
Lambda versus Sonic Pitch Sound Generator: the parameters behind the verdict, then further details
ParameterLambdaSonic Pitch Sound Generator
Price$2.99Free — better
Rating5.0 (1 ratings) — better4.5 (1.8K ratings)
Positive reviews80.0% of reviews — better71.5% of reviews
Number of ratings11.8K — better
Update frequencyEvery 54 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size6 MB28 MB
Age rating4+4+
DeveloperdgApps茂利 王

Customer experience

Lambda

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Sonic Pitch Sound Generator

All ratings1,771 ratings
Positive86.3%
Neutral5.4%
Negative8.2%
Written reviews228 reviews
Positive71.5%
Neutral6.1%
Negative22.4%

Bugs and requests

Lambda

Not enough reviews yet to summarise bugs or requests.

Sonic Pitch Sound Generator

Reported bugs

3 issues
  • Slider is too sensitive, making it hard to select precise frequencies
  • Ads sometimes play loudly and unexpectedly, potentially damaging speakers
  • App crashes when trying to close full-screen ads

Requested features

4 requests
  • Ability to save and name custom frequency presets
  • Option to manually enter exact frequency values
  • Timer or background playback mode
  • Paid ad-free version

In-app purchases

None

Lambda

No in-app purchases

2 purchases

Sonic Pitch Sound Generator

Subscriptions2
  • Premium Weekly Subscription$5.997 Days
  • Premium Yearly Subscription$19.991 Year

Questions

Is Lambda free?
Lambda costs $2.99, with no in-app purchases.
Is Sonic Pitch Sound Generator free?
Sonic Pitch Sound Generator is free to download, with in-app purchases available.
Which has better reviews, Lambda or Sonic Pitch Sound Generator?
Lambda is rated higher. Lambda averages 5.0 out of 5 from 1 ratings, while Sonic Pitch Sound Generator averages 4.5 from 1.8K ratings.
Do Lambda or Sonic Pitch Sound Generator have ads?
Sonic Pitch Sound Generator shows ads; Lambda does not.
Which is updated more often, Lambda or Sonic Pitch Sound Generator?
Lambda ships an update every 54 months, and Sonic Pitch Sound Generator every 5 weeks. Most recently, Lambda was updated on September 17, 2026 and Sonic Pitch Sound Generator on September 22, 2026.

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