Comparison

SpeakerAngle vs Audio Function Generator

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

Head to head
About

SpeakerAngle

This app precisely measures and adjusts speaker toe-in angles using your iPhone or iPad. It helps optimize audio system performance by ensuring critical speaker angles are accurately set and matched for superior sound quality. The intuitive interface provides real-time visual feedback and color-coded guidance.

Highlights
  • Precise speaker angle measurement
  • Real-time on-screen angle updates
  • Color-coded angle matching
  • Supports stereo and surround sound
  • Automatic project saving and renaming
  • Printable/shareable user guide
Features
Read full description

SpeakerAngle is the first app that allows you to precisely measure and adjust speaker toe-in angles with your iPhone, iPad, or iPod Touch in order to get the most out of your audio system. SpeakerAngle works with any speaker make or model, in stereo and surround sound systems. Plus it's easy and intuitive to use, with no need for WiFi or Internet connectivity. Key Features • Allows the accurate setting and matching of critical speaker angles for optimum sound quality. • As you adjust a speaker in the room, on-screen speaker icons move and continuously update to display the current speaker angle. • Onscreen number boxes change color to let you know when left and right speaker toe-in angles are identical. • Includes user guide that can be printed or shared. • Projects are automatically saved as you work and can be freely renamed and recalled. To use SpeakerAngle, simply create a stereo or surround sound project and name it. Then adjust your speakers so they are facing straight ahead. Place your iPhone, iPad, or iPod Touch on top of one of the speakers and press the corresponding onscreen icon, then rotate that speaker towards the listening position. As you do so, SpeakerAngle's onscreen display shows you the angle, using red-green color coding to guide you through a range of recommended angles. Next, do the same for the paired speaker in your system until its icon's number box becomes yellow in color, indicating that both speakers are identically angled. A handy onscreen Reset button allows you to start from scratch at any time and experiment with different toe-in angles. When you're ready to fine-tune your system, a menu option allows you to purchase our companion app, SpeakerPro, which allows you to take precise distance measurements and receive intelligent toe-in recommendations. Available on the App Store now!

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

Screenshots

SpeakerAngle4 screens
Audio Function Generator4 screens

Verdict

The call

The clearest difference is price: Audio Function Generator at Free against SpeakerAngle's $0.99. Audio Function Generator also leads on rating (4.7 vs 3.3) and review sentiment (77% vs 50%). SpeakerAngle's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 16.0). On update cadence, 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; SpeakerAngle costs $0.99 up front. Audio Function Generator sells 1 one-off in-app purchase. SpeakerAngle asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 50% of SpeakerAngle's written reviews are positive against 77% of Audio Function Generator's.

UpkeepUpdate frequency

SpeakerAngle ships an update monthly, Audio Function Generator every 6 weeks. The most recent releases landed on October 17, 2026 and October 20, 2026 respectively.

Scorecard7 real differences · 3 level
SpeakerAngle versus Audio Function Generator: the parameters behind the verdict, then further details
ParameterSpeakerAngleAudio Function Generator
Price$0.99Free — better
Rating3.3 (11 ratings)4.7 (2.2K ratings) — better
Positive reviews50.0% of reviews77.1% of reviews — better
Number of ratings112.2K — better
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS7.0 — better16.0
Further details — not scored
Size4 MB13 MB
Age rating4+4+
DeveloperAudioAppsStoreThomas Gruber

Customer experience

SpeakerAngle

All ratings11 ratings
Positive54.5%
Neutral9.1%
Negative36.4%
Written reviews44 reviews
Positive50.0%
Neutral9.1%
Negative40.9%

Audio Function Generator

All ratings2,211 ratings
Positive91.9%
Neutral3.1%
Negative5.0%
Written reviews271 reviews
Positive77.1%
Neutral6.3%
Negative16.6%

Bugs and requests

SpeakerAngle

Not enough reviews yet to summarise bugs or 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)

In-app purchases

None

SpeakerAngle

No in-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99

Questions

Is SpeakerAngle free?
SpeakerAngle costs $0.99, with no in-app purchases.
Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Which has better reviews, SpeakerAngle or Audio Function Generator?
Audio Function Generator is rated higher. SpeakerAngle averages 3.3 out of 5 from 11 ratings, while Audio Function Generator averages 4.7 from 2.2K ratings.
Do SpeakerAngle or Audio Function Generator have ads?
Neither SpeakerAngle nor Audio Function Generator shows ads.
Which is updated more often, SpeakerAngle or Audio Function Generator?
SpeakerAngle ships an update monthly, and Audio Function Generator every 6 weeks. Most recently, SpeakerAngle was updated on October 17, 2026 and Audio Function Generator on October 20, 2026.

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