iTuningFork vs apeDelay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iTuningFork
This app generates various audio waveforms and frequencies for tuning musical instruments or testing electronic equipment. It offers selectable waveforms, adjustable frequencies, and features like looping tones and real-time volume/timbre editing.
- Selectable waveforms (sine, square, triangle, saw, white noise)
- Frequency range from 5Hz to 22000Hz
- Instrument-specific tone scales
- Looping tones with adjustable timeout
- Real-time volume and timbre editing
- 9-octave tone keyboard
- Ultrasonic multifrequencies for pest repellent
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"iTuningFork - Tone Generator" is a tone generator (signal generator) for tuning musical instruments or for testing electronic equipments. The signal generator is an electrical / electronic device capable of generating an electrical signal with waveforms types and frequencies selectable by the user. Music industry: "ITuningFork - Tone Generator" works like a tuning fork. The program preset tones, different for each type of instrument, simplify the operations required for tuning musical instruments. You have to select the musical instrument you want to tune and "iTuningFork - Tone Generator" will automatically generate the full tone scale for the selected musical instrument. You can play the single key/tone/note, or you can "Play Loop" to activate all the preset tones in sequence for the selected instrument. In this case, the "Timeout" setting determines the duration of each tone in the automatic sequence of tones for the selected musical instrument. Volume and timbre can also be edited while playing a tone; you can thus obtain special effects of shifting the tone frequency in real time. Volume control allows you to adjust the exact audio intensity for the playing tone and allow you to tune your music instrument more easily. The “Notes Duration” controls allow you to decide whether the notes should only be played until the button is pressed or continuously until you press "Stop", or with a fixed timeout adjustable in seconds. It is also available the 9-octave tones keyboard for each waveform selected to play the desired note. Electronic industry: Signals generators are typically used in three ways: - in the testing of electrical and electronic circuits - as a process control device - as a sample instrument Circuit Verification: the equipment provides a precise signal chosen by the user to the circuit to be verified: the analysis of how the circuit elaborates it, and the comparison of what was theoretically expected, give to the analyst details about the correct operation of the circuit. Circuit Control: the generated signal is used as a reference to control the output process of the circuits Sampling instrument: a particular variant of the use of signal generators in testing is when used as a sample capable of generating a known, stable and defined electrical signal with relatively low uncertainty to be used as a reference for calibration of electrical instrumentation. Technical features: 1) Signals generator with selectable waveforms: - Sine waveform - Square waveform - Triangular waveform - Saw waveform - White Noise waveform 2) Signals generator with selectable frequencies: - From 5Hz to 22000Hz (some low frequencies or high frequencies tones can not be heard using the internal speaker of the portable device... for these tones, you must use an external audio amplifier or a specific equipment) 3) Repulsive ultrasonic multifrequencies: repellent for mosquito / flies / mice / animals that hates ultrasounds. Application Type: - UNIVERSAL APP (pay it only once and runs on all your devices)
apeDelay
This audio effect app transforms sound by converting it to the frequency domain for manipulation, then back to the time domain. It offers advanced spectral effects like blur, granulation, and filtering, with extensive control over delay lines and feedback.
- Spectral delay with up to 2048 lines
- STFT analysis/re-synthesis
- Spectral Blur, Granulate, Decimator, Freeze
- Brick-wall filters
- AudioUnit V3 (FX) and Inter-App Audio (FX) support
- Audiobus (Full) and Ableton Link integration
- Built-in Stereo Sampler
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apeDelay - spectral Delay implements up to 2048 delay lines with feedback or up to 2048 Brick-wall filters. The algorithm is based on the STFT (i.e. Short Time Fourier Transform) analysis/re-synthesis. The audio signal is converted in abstract ‘Frequency Domain’, where is manipulated and transformed back again in ‘Time Domain’. You can draw the Time and Feedback shapes for both stereo channels. This is achieved from the multi sliders, who provide a great tool to manage the huge numbers of parameters. You can also benefit of more advanced spectral manipulations like the Spectral Blur, Granulate, Bins Decimator, Noise Gate, Spectral Freeze and Brick-wall filters. + AudioUnit V3 (FX) + Inter-App Audio (FX) + Audiobus (Full) + Ableton Link + Audio Interface support + Microphone input + Built In Stereo Sampler with varispeed and scrubbing + Control Manager LFO for all the Parameters + Midibus, Virtual Midi and Network: 14 bit NRPN controllers + Sample Manager, sharing common audio files via iTunes, Dropbox and AudioCopy + Snapshots Presets Morphing Pad + Post Fx: Stereo Delay, Amazing ClassicVerb Low/Hi Shelving and Dynamic Processor + etc...
Screenshots
Verdict
The clearest difference is review sentiment: apeDelay at 88% against iTuningFork's 0%. apeDelay also leads on rating (4.6 vs 1.6) and update cadence (every 4 months vs every 56 months). iTuningFork's advantage is price ($1.99 vs $7.99). On ads, 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
iTuningFork costs $1.99 and apeDelay $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
apeDelay holds the better App Store score, 4.6 against 1.6. Both are backed by a comparable volume of ratings — 5 and 17 respectively. Written reviews point the same way: 0% of iTuningFork's written reviews are positive against 88% of apeDelay's.
iTuningFork ships an update every 56 months, apeDelay every 4 months. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.
| Parameter | iTuningFork | apeDelay |
|---|---|---|
| Price | $1.99 — better | $7.99 |
| Rating | 1.6 (5 ratings) | 4.6 (17 ratings) — better |
| Positive reviews | 0.0% of reviews | 87.5% of reviews — better |
| Number of ratings | 5 | 17 — better |
| Update frequency | Every 56 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | apeSoft |
Customer experience
iTuningFork
apeDelay
In-app purchases
iTuningFork
No in-app purchases
apeDelay
No in-app purchases









