Comparison

Audio Function Generator vs Woofer Box Calculator PRO

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

Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.

Highlights
  • Generate sine, square, triangle, and sawtooth tones
  • Frequency and volume sweep generation
  • Noise generation (white, pink, violet, etc.)
  • Custom preset creation and saving
  • Extended frequency range (PRO feature)
  • Multi-tone playback (PRO feature)
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 to use! AND THESE ARE THE ADVANCED SETTINGS/FEATURES (upgrade to PRO required): => 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 tutorial page: www.ee-toolkit.com/audio-function-generator

About

Woofer Box Calculator PRO

Design custom enclosures for car subwoofers with advanced calculations. This tool considers cabin gain, power compression, and port compression to predict final SPL. Save and load projects, drivers, and vehicles for easy management.

Highlights
  • Subwoofer enclosure design
  • Cabin gain consideration
  • Power and port compression
  • Predict final SPL
  • Gross volume handling
  • Vented enclosure calculation
  • Save and load projects
Features
Read full description

Woofer Box Calculator PRO will help you design enclosure (box) for your bass car audio speaker (sub woofer). It was developed by 2012 and 2013 European champion in dB Drag Racing and was designed to be easy and transparent. It is better than other software because it also considers approximate cabin gain, power compression and port compression. Because of that, it can also predict final SPL in your car. Furthermore, it knows how to handle total (gross) box volume instead of net box volume. It can also calculate vented (ported) enclosures in the opposite way (e.g. it can calculate vent size or total box size for desired vent). It can even calculate optimal box for your car and equipment, for burping or for music, depending on priority (SPL to SQ). Projects can easily be saved and loaded. Boxes, Drivers and Vehicles can also be saved and loaded separately. Units an constraints can be changed under settings. This is the PRO version with without advertisement and all features unlocked!

Screenshots

Audio Function Generator4 screens
Woofer Box Calculator PRO4 screens

Verdict

The call

The clearest difference is price: Audio Function Generator at Free against Woofer Box Calculator PRO's $4.99. Audio Function Generator also leads on rating (4.7 vs 3.2) and review sentiment (77% vs 41%). Woofer Box Calculator PRO's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 16.0). On ads 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

Audio Function Generator is free to download; Woofer Box Calculator PRO costs $4.99 up front. Audio Function Generator sells 1 one-off in-app purchase. Woofer Box Calculator PRO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 41% of Woofer Box Calculator PRO's.

UpkeepUpdate frequency

Audio Function Generator ships an update every 6 weeks, Woofer Box Calculator PRO every 18 months. The most recent releases landed on November 1, 2026 and October 12, 2026 respectively.

Scorecard8 real differences · 2 level
Audio Function Generator versus Woofer Box Calculator PRO: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorWoofer Box Calculator PRO
PriceFree — better$4.99
Rating4.7 (2.2K ratings) — better3.2 (5 ratings)
Positive reviews77.2% of reviews — better41.2% of reviews
Number of ratings2.2K — better5
Update frequencyEvery 6 weeks — betterEvery 18 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.07.0 — better
Further details — not scored
Size13 MB4 MB
Age rating4+4+
DeveloperThomas GruberMatjaz Marolt

Customer experience

Audio Function Generator

All ratings2,211 ratings
Positive91.9%
Neutral3.1%
Negative5.0%
Written reviews272 reviews
Positive77.2%
Neutral6.3%
Negative16.5%

Woofer Box Calculator PRO

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews17 reviews
Positive41.2%
Neutral11.8%
Negative47.1%

Bugs and requests

Audio Function Generator

Reported bugs

4 issues
  • Crashes on launch
  • Volume slider issues
  • Airplay not working
  • Sound distortion when display is active

Requested features

6 requests
  • Add download/save feature for custom sounds
  • Improve sweep function (continuous mode, better frequency control)
  • Add more multi-frequency rows
  • Implement 432Hz base frequency option
  • Add phase control for noise generators
Show 1 more
  • Improve accessibility (VoiceOver support)

Woofer Box Calculator PRO

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99
None

Woofer Box Calculator PRO

No in-app purchases

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is Woofer Box Calculator PRO free?
Woofer Box Calculator PRO costs $4.99, with no in-app purchases.
Which has better reviews, Audio Function Generator or Woofer Box Calculator PRO?
Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Woofer Box Calculator PRO averages 3.2 from 5 ratings.
Do Audio Function Generator or Woofer Box Calculator PRO have ads?
Neither Audio Function Generator nor Woofer Box Calculator PRO shows ads.
Which is updated more often, Audio Function Generator or Woofer Box Calculator PRO?
Audio Function Generator ships an update every 6 weeks, and Woofer Box Calculator PRO every 18 months. Most recently, Audio Function Generator was updated on November 1, 2026 and Woofer Box Calculator PRO on October 12, 2026.

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