Guitar Tuner vs Audio Function Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Guitar Tuner
Tune your 6-string guitar with precise reference notes. Supports standard tuning and more. Ensure your device is not on silent to hear the tuning tones.
- Accurate reference notes
- Supports standard tuning (E A D G B e)
- Supports more tunings
- Clear tuning tones
- Device not on silent required
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Tune your 6-string guitar with clear, accurate reference notes. Includes standard tuning (E A D G B e) plus popular alternate tunings. Fast, simple, and reliable.
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)
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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
Verdict
The clearest difference is in-app purchases: Guitar Tuner at none against Audio Function Generator's 1. Audio Function Generator's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 9 months). On price, rating, review sentiment and ratings volume 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
Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. Guitar Tuner asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Guitar Tuner against 4.7 for Audio Function Generator. Both are backed by a comparable volume of ratings — 3.9K and 2.2K respectively. Written reviews are what separate them: 73% of Guitar Tuner's written reviews are positive against 77% of Audio Function Generator's.
Guitar Tuner ships an update every 9 months, Audio Function Generator every 6 weeks. Both last shipped on October 20, 2026.
| Parameter | Guitar Tuner | Audio Function Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (3.9K ratings) | 4.7 (2.2K ratings) — better |
| Positive reviews | 73.0% of reviews | 77.1% of reviews — better |
| Number of ratings | 3.9K — better | 2.2K |
| Update frequency | Every 9 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Alvin Yu | Thomas Gruber |
Customer experience
Guitar Tuner
Audio Function Generator
Bugs and requests
Guitar Tuner
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
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- Improve accessibility (VoiceOver support)
In-app purchases
Guitar Tuner
No in-app purchases
Audio Function Generator
- Upgrade to PRO$9.99
Questions
Is Guitar Tuner free?
Is Audio Function Generator free?
Which has better reviews, Guitar Tuner or Audio Function Generator?
Do Guitar Tuner or Audio Function Generator have ads?
Which is updated more often, Guitar Tuner or Audio Function Generator?
Other comparisons
