Comparison

Audio Function Generator vs Speaker Box Lite

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

Speaker Box Lite

Calculate subwoofer box volumes and design acoustic systems with detailed charts and parameter generation. Supports various enclosure types and includes a shared online speaker database. Offers cloud project saving and PRO features via subscription.

Highlights
  • Subwoofer box volume calculation
  • Support for multiple enclosure types
  • Amplitude, phase, and SPL charts
  • Parameter generation for vented boxes
  • Port and displacement volume calculation
  • Cloud project saving
  • Shared online speaker database
Features
Read full description

Design your perfect speaker box — skip the math and jump straight to building. Speaker Box Lite calculates subwoofer and speaker enclosures for you: sealed, ported (bass-reflex), 4th & 6th order bandpass, passive radiator, and transmission line. Get optimal volume and tuning recommendations, then see your box in full 3D with auto-generated blueprints and cut sheets. BUILT-IN SPEAKER DATABASE Search 5,000+ drivers from 300+ brands — Thiele-Small parameters load with one tap. Can't find yours? Add it manually in seconds. DESIGN IN 3D Place speakers and ports, add braces and dados, choose materials — and watch your enclosure come together. Design custom waveguides for tweeters and ports — conical, elliptical, hyperbolic and radial horn profiles included. SIMULATE BEFORE YOU BUILD Frequency response, phase, group delay, cone excursion and SPL plots. Compare enclosure variants side by side and pick the one that sounds right — before you cut a single board. COMPLETE SYSTEMS Multi-way boxes with subs, mids and tweeters. Full crossover designer: low-pass and high-pass filters (Butterworth, Linkwitz-Riley and more), series and parallel notch, Zobel, RC and RL contour networks, plus L-Pad attenuation. EXPORT & BUILD Export cut sheets and blueprints for every panel. 3D-print custom ports and waveguides via STL, or export the whole enclosure and its parts as STL. Send parts to CNC in STEP format for precision cutting. YOUR PROJECTS EVERYWHERE Free account keeps projects in the cloud — start on your phone, continue on the web at speakerboxlite.com. Upgrade to PRO for unlimited projects, offline database access and all advanced features. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in your Account Settings. Privacy Policy: https://speakerboxlite.com/privacy Terms of Use: https://speakerboxlite.com/terms-of-use

Screenshots

Audio Function Generator4 screens
Speaker Box Lite4 screens

Verdict

The call

The clearest difference is rating: Audio Function Generator at 4.7 against Speaker Box Lite's 4.1. Audio Function Generator also leads on ads (none vs shown) and review sentiment (77% vs 62%). Speaker Box Lite's advantage is update cadence (every 11 days vs every 6 weeks). On price, in-app purchases, monetization model 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

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and Speaker Box Lite sells 3 in-app purchases, starting at $4.49 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 339, 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 62% of Speaker Box Lite's.

UpkeepUpdate frequency

Audio Function Generator ships an update every 6 weeks, Speaker Box Lite every 11 days. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Audio Function Generator versus Speaker Box Lite: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorSpeaker Box Lite
PriceFreeFree
Rating4.7 (2.2K ratings) — better4.1 (339 ratings)
Positive reviews77.1% of reviews — better61.9% of reviews
Number of ratings2.2K — better339
Update frequencyEvery 6 weeksEvery 11 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.515.1 — better
Further details — not scored
Size14 MB160 MB
Age rating4+4+
DeveloperThomas GruberAlexey Abdulin

Customer experience

Audio Function Generator

All ratings2,191 ratings
Positive91.8%
Neutral3.1%
Negative5.1%
Written reviews271 reviews
Positive77.1%
Neutral6.3%
Negative16.6%

Speaker Box Lite

All ratings339 ratings
Positive78.8%
Neutral4.1%
Negative17.1%
Written reviews139 reviews
Positive61.9%
Neutral2.9%
Negative35.3%

User reviews

Audio Function Generator

From 2.2K App Store ratings

What we love

  • 👍 Great app
  • 🎶 Helps with Tinnitus
  • 💯 Best app I've paid for
  • 🔍 Highly recommended
  • 🎨 Attention to detail

Room to improve

  • 🐛 Crashes
  • 💰 Deceptive/Money hungry
  • 🔒 Basic features paywalled
  • 🔒 Limited without paying
  • 🔒 Removed functionality to push paid version

Speaker Box Lite

From 339 App Store ratings

What we love

  • 📊 Comprehensive graphing and visualization tools
  • 💾 Extensive speaker driver database with TS parameters
  • 📐 Accurate enclosure calculations for sealed and ported boxes
  • ✂️ Automatic cut list generation for DIY building
  • 💡 Intuitive interface for beginners and experts

Room to improve

  • 💰 Expensive subscription model ($5-7/month or 400 rubles)
  • 🚫 Limited free version functionality
  • 🐛 Frequent crashes and stability issues
  • ❌ Inconsistent calculation accuracy
  • 🔐 Billing/subscription verification problems

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)

Speaker Box Lite

Reported bugs

12 issues
  • App crashes when adjusting VB/FB parameters
  • Crashes on certain parameter combinations requiring reinstall
  • Drawing/3D model generation hangs indefinitely
  • Subscription payment charged multiple times
  • Pro version access denied despite active payment
Show 7 more
  • Email registration validation errors
  • Parameters randomly change during design process
  • Incorrect TS parameter data from driver database
  • Incompatibility with latest iOS versions
  • Overlapping port and speaker placement in designs
  • Error messages about missing parameters with no input field
  • App freezes when entering box specifications

Requested features

13 requests
  • One-time purchase option instead of subscription
  • Portuguese language support (PT-BR)
  • Air velocity graphs
  • Complete 3D model generation with final drawings
  • Bandpass 4th order enclosure support
Show 8 more
  • Tweeter/midrange enclosure design
  • Internal partition calculations
  • Impedance information in database
  • Video tutorials and glossary for technical terms
  • Dipole/ripole calculations
  • Passive radiator enclosure support
  • Better port visualization in cut sheets
  • Multi-sub application improvements

In-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99
3 purchases

Speaker Box Lite

Subscriptions3
  • Week PRO$4.497 Days
  • Month plan$7.991 Month
  • PRO Account$8.991 Month

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is Speaker Box Lite free?
Speaker Box Lite is free to download, with in-app purchases available.
Which has better reviews, Audio Function Generator or Speaker Box Lite?
Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Speaker Box Lite averages 4.1 from 339 ratings.
Do Audio Function Generator or Speaker Box Lite have ads?
Speaker Box Lite shows ads; Audio Function Generator does not.
Which is updated more often, Audio Function Generator or Speaker Box Lite?
Audio Function Generator ships an update every 6 weeks, and Speaker Box Lite every 11 days. Most recently, Audio Function Generator was updated on September 24, 2026 and Speaker Box Lite on September 18, 2026.

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