Audio Function Generator vs Tuning Fork Pro 20
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)
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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
Tuning Fork Pro 20
This utility app provides a simple and straightforward tuning fork. It allows users to generate any frequency between 20 Hz and 20,000 Hz, limited only by the device's speaker and human hearing.
- Adjustable frequency range (20 Hz - 20,000 Hz)
- Simple and easy to use interface
- Generates audio tones
- No complex settings
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Tuning Fork. Do you need quick and easy to use tuning fork? No problem, here it is. Set any frequency between 20 Hz and 20,000 Hz (hearing range limited by phone speaker as well as by human ear capabilities). No fuss tunig fork. Does what it says on the tin.
Screenshots
Verdict
The clearest difference is rating: Audio Function Generator at 4.7 against Tuning Fork Pro 20's 3.0. Audio Function Generator also leads on ratings volume (2.2K vs 2). Tuning Fork Pro 20's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 6 weeks). On price, 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
Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. Tuning Fork Pro 20 asks for nothing beyond the download.
Audio Function Generator holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 2, so its average is the more settled of the two.
Audio Function Generator ships an update every 6 weeks, Tuning Fork Pro 20 weekly. The most recent releases landed on September 26, 2026 and September 5, 2026 respectively.
| Parameter | Audio Function Generator | Tuning Fork Pro 20 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.2K ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 77.1% of reviews | — |
| Number of ratings | 2.2K — better | 2 |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | Krzysztof Gwiazda |
Customer experience
Audio Function Generator
Tuning Fork Pro 20
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
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- Improve accessibility (VoiceOver support)
Tuning Fork Pro 20
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Audio Function Generator
- Upgrade to PRO$9.99
Tuning Fork Pro 20
No in-app purchases
Questions
Is Audio Function Generator free?
Is Tuning Fork Pro 20 free?
Which has better reviews, Audio Function Generator or Tuning Fork Pro 20?
Do Audio Function Generator or Tuning Fork Pro 20 have ads?
Which is updated more often, Audio Function Generator or Tuning Fork Pro 20?
Other comparisons
