Comparison

Blue Box 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

Blue Box

Encode and decode DTMF signals using your device's microphone or keypad. Play back tone sequences with adjustable settings, and save them for easy recall. Explore various tone systems, including trunk control and coin signals, for educational and utility purposes.

Highlights
  • Encode/decode DTMF signals
  • Adjustable tone, delay, and volume
  • US, UK, and European tone systems
  • Multi-frequency and trunk control tones
  • Coin tone sequences (Red Box mode)
  • Custom tone creation
  • Save and organize sequences
Features
Currently charting
Read full description

Blue Box is utility for encoding and decoding DTMF (Dual-Tone Multi-Frequency) or Touch Tone signals. Generate tones by using the phone style keypad or decipher tones using the device’s microphone. Tone combinations can be played back with adjustable tone, delay and pause lengths and volume. Choose from US, UK and Europe based systems. Enable Multi-frequency tones, which were a precursor to DTMF. Additional trunk control signals will be available including KP, ST1, ST2, ST3, KP/ST2. Additional tones include the Dial Tone, Ring Back Tone, Busy Signal and 2600Hz. A comma can be used as a pause character to provide extra time between tones during playback. Save and organize any number of sequences for easy recall using the Favorites feature. Choose numbers from your contacts to display and play back tones. Share an encoded or decoded number with the Phone, FaceTime or Messages app. Use Red Box mode to play coin tone sequences, including 5¢, 10¢ and 25¢ for the US system and 10p and 50p for European systems. Create a custom tone with control over individual frequencies and volumes. The custom tone can consist of any number of on and off pulses and can optionally be continuous. Record interactions with the encoder and play them back with the same timing. The recording feature works with all tones, including the dial tone, busy signal, ring back tone, 2600Hz and coins and trunk control tones. A help manual is including, with step-by-step instructions for all features. When the app is first run, pop-ups will be displayed indicating what the controls are used for. Warning: Blue Box is designed as an educational tool and utility. Do not attempt to use Blue for any illegal or malicious purposes. Blue Box can be used to assist in dialing numbers, but can not be used to manipulate digital telephone utility services. Limitations: Blue Box is software based decoding and is processor intensive. Performance may vary between devices. Tones that are less than 100 ms with pauses that are less than 100 ms are difficult to process in software. Future versions and processors may increase the reliability of faster tone sequences. If you need touch tone decoding for higher speeds, a hardware solution is recommended. Blue Box can not play tones into the iPhone phone feature while in a call. Blue Box is useful for entering numbers into touch tone operated systems such as an answering machine passcode or a dial-up service that requires the entering of several touch tones to navigate a menu system. Simply enter the numbers once and then play back the numbers into the phone's microphone with a touch.

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

Blue Box4 screens
Sonic Pitch Sound Generator4 screens

Verdict

The call

The clearest difference is price: Sonic Pitch Sound Generator at Free against Blue Box's $4.99. Sonic Pitch Sound Generator also leads on update cadence (every 5 weeks vs every 7 months) and ratings volume (1.8K vs 3). Blue Box'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; Blue Box costs $4.99 up front. Sonic Pitch Sound Generator sells 2 in-app purchases, starting at $5.99 per 7 days. Blue Box asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Blue Box 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 3, so its average is the more settled of the two. Written reviews complicate that: 56% of Blue Box's written reviews are positive against 71% of Sonic Pitch Sound Generator's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Blue Box ships an update every 7 months, Sonic Pitch Sound Generator every 5 weeks. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.

Scorecard9 real differences · 2 level
Blue Box versus Sonic Pitch Sound Generator: the parameters behind the verdict, then further details
ParameterBlue BoxSonic Pitch Sound Generator
Price$4.99Free — better
Rating5.0 (3 ratings) — better4.5 (1.8K ratings)
Positive reviews55.6% of reviews71.5% of reviews — better
Number of ratings31.8K — better
Update frequencyEvery 7 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
Best chart rank#192 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size2 MB28 MB
Age rating4+4+
DeveloperSunshine Valley Systems茂利 王

Customer experience

Blue Box

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews18 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

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

Blue Box

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

Blue Box

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 Blue Box free?
Blue Box costs $4.99, 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, Blue Box or Sonic Pitch Sound Generator?
Blue Box is rated higher. Blue Box averages 5.0 out of 5 from 3 ratings, while Sonic Pitch Sound Generator averages 4.5 from 1.8K ratings.
Do Blue Box or Sonic Pitch Sound Generator have ads?
Sonic Pitch Sound Generator shows ads; Blue Box does not.
Which is updated more often, Blue Box or Sonic Pitch Sound Generator?
Blue Box ships an update every 7 months, and Sonic Pitch Sound Generator every 5 weeks. Most recently, Blue Box was updated on September 11, 2026 and Sonic Pitch Sound Generator on September 22, 2026.

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