Pixel Music vs FrequencyCat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pixel Music
Transform your favorite images into unique musical compositions. This app uses pixel data to control pitch, duration, and velocity, allowing you to create melodies and rhythms by interacting with visuals. Explore various traversal methods and image data types for diverse sonic results.
- Pixels control pitch, velocity, and note duration
- Play multiple images simultaneously
- AUv3 support with MIDI
- Ableton Link compatible
- Customizable image traversal and data mapping
- Internal synth with effects
- Save and load app states
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Pixel Music is a music sequencer based on images. Take an image you love and start playing. Overview ◦ Pixels turn into pitch, velocity, and note durations ◦ Play multiple images at the same time, in sync ◦ Choose what parts of the image will be played and at what timing ◦ Tap on the image and record yourself playing alongside the sequencer Features ◦ AUv3 with preset and MIDI support ◦ Ableton Link compatible ◦ Control sequencer timing and configuration ◦ Program different step lengths in patterns and play these across your images with Verses ◦ Choose between RGB, Luminance, Hue, or Saturation data to control pitch, velocity, or note duration ◦ Choose how the image is traversed, between Left -> Right, Top -> Down, or Circular. Select randomness factor in image traversal ◦ Choose recorded loop length and quantization settings ◦ Internal Synth with delay and reverb effects ◦ Send MIDI to external synths when used as AUv3. Each image you add has a separate MIDI channel exposed in the AU host ◦ Save and Load app states and configurations ◦ Dark mode support AU Hosts Compatibility ◦ Pixel Music works best with AUM, Audiobus, or ApeMatrix ◦ Pixel Music does NOT support Logic Pro or Garage Band Have fun with it.
FrequencyCat
Transform your photos into unique sound art using advanced image-to-sound technology. Explore, enjoy, and share your creative audio-visual pieces. Embrace your inner artist and discover the unexpected.
- Morph images into sound art
- Create spectrogram oddities
- Share sound art creations
- Unique audio-visual experience
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Hide an image inside sound. FrequencyCat is a playful tool for exploring the connection between images, sound, and spectrograms. Choose an image, and FrequencyCat transforms it into a unique audio signal. Play the sound and view its spectrogram, and you’ll see the original image emerge again from the frequencies. With FrequencyCat, you can: - Turn images into sound - View audio spectrograms in real time - Play sounds and reveal the images hidden inside them - Explore how different images create different sounds - Discover the relationship between sound, frequency, and Fourier transforms in an intuitive way There’s no magic behind it. Just frequencies, phases, an inverse Fourier transform, and a little curiosity about sound. Whether you’re interested in acoustics, music, signal processing, or simply wondering what an image might sound like, FrequencyCat gives you a new way to explore. Pick an image. Hear what it sounds like.
Screenshots
Verdict
The clearest difference is price: FrequencyCat at Free against Pixel Music's $5.99. FrequencyCat also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 82%). Pixel Music's advantage is update cadence (every 8 months vs every 40 months) and ratings volume (7 vs 1). On ads and in-app purchases 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
FrequencyCat is free to download; Pixel Music costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
FrequencyCat holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Pixel Music has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 82% of Pixel Music's written reviews are positive against 100% of FrequencyCat's.
Pixel Music ships an update every 8 months, FrequencyCat every 40 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Pixel Music | FrequencyCat |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.6 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 81.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 8 months — better | Every 40 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 39 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrei Antonescu | Xuesong Zhang |
Customer experience
Pixel Music
FrequencyCat
In-app purchases
Pixel Music
No in-app purchases
FrequencyCat
No in-app purchases









