FrequencyCat vs ChannelStrip LE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
ChannelStrip LE
This app offers a modeled tube preamp with a 3-band EQ and an oscilloscope. It's designed for music production to add smooth tube saturation and gentle tone-shaping, allowing users to monitor waveform compression.
- Modeled tube saturation
- 3-band equalizer
- Oscilloscope waveform monitoring
- Adjustable oversampling
- AUV3 and standalone app support
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ChannnelStrip is a modeled tube preamp with 3 band EQ and a simple oscilloscope available as AUV3 and standalone app. Controlling dynamics with saturation is an often overlooked technique in music production. ChannelStrip is intended as an end-of-chain effect giving you smooth modeled tube saturation combined with an oscilloscope to monitor how the waveform is compressed. The integrated 3-band equalizer will furthermore help you apply gentle, unobtrusive tone-shaping. Even as a simple distortion effect or equalizer, ChannelStrip will make a great addition to your FX collection. Features: - Modeled tube saturation with character control - Gentle 3-band equalizer - Oscilloscope - Adjustable oversampling factor (WARNING: uses a lot of resources on higher settings and may cause audio dropouts)
Screenshots
Verdict
The clearest difference is update cadence: ChannelStrip LE at every 4 days against FrequencyCat's every 40 months. ChannelStrip LE also leads on ratings volume (12 vs 1) and device support (3 vs 1). FrequencyCat's advantage is rating (5.0 vs 4.7). On price, review sentiment, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FrequencyCat holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ChannelStrip LE has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
FrequencyCat ships an update every 40 months, ChannelStrip LE every 4 days. The most recent releases landed on September 4, 2026 and August 18, 2026 respectively.
| Parameter | FrequencyCat | ChannelStrip LE |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.7 (12 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 12 — better |
| Update frequency | Every 40 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 14 — better |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Xuesong Zhang | Christopher Herb |
Customer experience
FrequencyCat
ChannelStrip LE
In-app purchases
FrequencyCat
No in-app purchases
ChannelStrip LE
No in-app purchases








