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.
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.
- 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)
Read full descriptionHide 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
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.
- Subwoofer enclosure design
- Cabin gain consideration
- Power and port compression
- Predict final SPL
- Gross volume handling
- Vented enclosure calculation
- Save and load projects
Read full descriptionHide 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
Verdict
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
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.
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.
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.
| Parameter | Audio Function Generator | Woofer Box Calculator PRO |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.7 (2.2K ratings) — better | 3.2 (5 ratings) |
| Positive reviews | 77.2% of reviews — better | 41.2% of reviews |
| Number of ratings | 2.2K — better | 5 |
| Update frequency | Every 6 weeks — better | Every 18 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 7.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | Matjaz Marolt |
Customer experience
Audio Function Generator
Woofer Box Calculator PRO
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 moreShow fewer
- Improve accessibility (VoiceOver support)
Woofer Box Calculator PRO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Audio Function Generator
- Upgrade to PRO$9.99
Woofer Box Calculator PRO
No in-app purchases
Questions
Is Audio Function Generator free?
Is Woofer Box Calculator PRO free?
Which has better reviews, Audio Function Generator or Woofer Box Calculator PRO?
Do Audio Function Generator or Woofer Box Calculator PRO have ads?
Which is updated more often, Audio Function Generator or Woofer Box Calculator PRO?
Other comparisons















