Comparison

Spectral Eye vs CymaScope Cymatics Visualizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Spectral Eye

Visualize the harmonic frequencies that make up sounds. This app uses a Fast Fourier transform to display sound components in a unique spiral arrangement, aligning octaves. It's ideal for musicians and sound enthusiasts to understand tonal differences and musical structures.

Highlights
  • Spiral frequency spectrum display
  • Fast Fourier transform analysis
  • Visualizes harmonic frequencies
  • Adjustable synthesizer with sine waves
  • MIDI input for triggering notes
  • Displays relative frequency strengths
Features
Read full description

The sound that you hear is made up of vibrations at different frequencies. Two instruments, such as a guitar or a trumpet, might play the same note -- what makes them sound different are the harmonic frequencies that combine to make the overall tone. Spectral Eye will reveal these frequencies, so you can see what your sounds are made from. Using a Fast Fourier transform, incoming sound is split into individual sine waves, which are then displayed on the screen. Frequency spectrum displays are not uncommon; what makes Spectral Eye different is the arrangement of the frequencies into a spiral, so that octaves line up as rays coming from the center. The `concert pitch' of A is a vibration at 440 cycles per second. One octave above this is a doubling to 880, and an octave below is 220. On the Spectral Eye display, these frequencies fall into a line. You can see the structure clearly on the display as you make different kinds of sounds or play music. The stronger the frequency, the larger the red dot and white line; the size of the dots on the display scale to show the relative frequency strengths clearly. When you pluck a string on a guitar, the string will vibrate at a root frequency, but also at a frequency that is twice that of the root, as well as a number of different multiples. The resonant frequencies are what make different guitars sound unique. Harmonies between the frequencies of multiple notes are what make chords sound interesting. As the tone of a synthesizer note changes, you can see different component frequencies rise and fall. In addition to displaying the frequencies, you can also generate sound using Spectral Eye; we have included a simple synthesizer, which will generate either a pure sine wave, or a sine wave with an additional frequency a fifth above. Move the control on the right or bottom part of the screen to change the tone, and touch the main display and move in a clockwise or counterclockwise manner to change the pitch. The version of Spectral Eye also includes MIDI; you can start a MIDI synthesizer, and then use the Spectral Eye display to trigger notes. There are dozens of excellent synthesizers available; you can use this app to not only play them, but to see how their sounds are formed. And if you're trying to pick out the notes to a song, you can watch the display to see where the notes land. Spectral Eye is free, and will remain that way. No pop-up ads. No nag screen. Just good clean fun. If you like the app, we would very much appreciate a review in the app store. The core technology in Spectral Eye is part of our polyphonic pitch-to-MIDI app MIDImorphosis, which will let you use an ordinary guitar or other instrument to control MIDI synthesizers. This technology is also part of Infinite Looper, our innovative MIDI looping app. We have a number of other music-related apps available; we hope you dig Spectral Eye, and if you want to help us keep good things going, reviews or purchases of our other apps would be awesome!

About

CymaScope Cymatics Visualizer

Visualize sound frequencies and discover the hidden beauty of voice and music. Play notes on a keyboard or use your microphone to create dynamic visual patterns. Save and share your creations, and explore articles on sound therapy.

Highlights
  • Visualize sound frequencies
  • Play interactive keyboard
  • Record and save sequences
  • Generate visual patterns from voice/music
  • Real-time note matching
  • Choose tuning options (432 Hz/440 Hz)
  • Access articles on sound therapy
Features
Currently charting
Read full description

See the frequencies! Watch the magic! Unlock the hidden beauty of voice & music with the CymaScope app—a window into a new and beautiful world Experience the extraordinary world of cymatics—the CymaScope App brings frequencies to life at your fingertips! ____________________________________________________________________________________________________________________ Main Features: • Play the Keyboard and see sound frequencies burgeon like flowers onto the screen with each note you play • Click the Record icon and store (on board) your own keyboard sequences, or the imagery created by your voice frequencies or music * Click the Microphone icon and watch the magic unfold as your voice or music is transposed into beautiful, dynamic CymaGlyphs • Click the Camera icon and send a still moment of imagery to a friend, or save the image to your device’s photo library * Real-Time Note Matching: The app identifies the musical name of the frequencies of voice or music, useful for learning to pitch match • Choose from 432 Hz and 440 Hz on-board tuning options, compare the intricate details of imagery created by both concert pitches Additional features: • Superb, free articles on Sound Therapy, The Healing Power of the Human Voice and Egyptian Rebirth Sonic Rituals, all accessed within the app and stored online so we can update the specially curated menu at any time • State-of-the-art CymaScope Videos: Immerse yourself in a gallery of gorgeous CymaScope videos, where sound frequencies and beauty merge • Mirror the CymaScope app to a computer or video projector, enabling larger groups to experience the imagery Who should buy the CymaScope app? Developed in collaboration with the CymaScope team, and based on the scientific CymaScope instrument, this exciting app opens a new dimension of sound and supports: Musicians, vocalists, sound practitioners, music therapists, art therapists, cymatics enthusiasts, young scientists (and not so young scientists) and all who have a curious mind! The CymaScope App — Visualize Sound Frequencies & Discover Nature’s Hidden Beauty

Screenshots

Spectral Eye3 screens
CymaScope Cymatics Visualizer4 screens

Verdict

The call

The clearest difference is price: Spectral Eye at Free against CymaScope Cymatics Visualizer's $12.99. Spectral Eye also leads on rating (4.9 vs 3.9) and review sentiment (89% vs 63%). CymaScope Cymatics Visualizer's advantage is chart position (#145 vs unranked). On update cadence, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Spectral Eye is free to download; CymaScope Cymatics Visualizer costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Spectral Eye holds the better App Store score, 4.9 against 3.9. That said, the two scores are not equally well evidenced: Spectral Eye has 84 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 89% of Spectral Eye's written reviews are positive against 63% of CymaScope Cymatics Visualizer's.

UpkeepUpdate frequency

Spectral Eye ships an update every 7 months, CymaScope Cymatics Visualizer every 12 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard7 real differences · 4 level
Spectral Eye versus CymaScope Cymatics Visualizer: the parameters behind the verdict, then further details
ParameterSpectral EyeCymaScope Cymatics Visualizer
PriceFree — better$12.99
Rating4.9 (84 ratings) — better3.9 (11 ratings)
Positive reviews89.5% of reviews — better62.5% of reviews
Number of ratings84 — better11
Update frequencyEvery 7 months — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#145 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.0
Further details — not scored
Size5 MB1.3 GB
Age rating4+4+
DeveloperPatrick MaddenCymascope Foundation Ltd

Customer experience

Spectral Eye

All ratings84 ratings
Positive97.6%
Neutral0.0%
Negative2.4%
Written reviews57 reviews
Positive89.5%
Neutral1.8%
Negative8.8%

CymaScope Cymatics Visualizer

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews8 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

Bugs and requests

Spectral Eye

Reported bugs

7 issues
  • Microphone stays on 24/7
  • Does not work for some users
  • App does not launch with AUM
  • No audio received from Audiobus 3
  • Error when launching with AUM
Show 2 more
  • Script error in graphic content
  • Display reacts to loud noise in silent room

Requested features

14 requests
  • Add 432hz tuning option
  • Show octave number of a note
  • Improve microphone control (only when active)
  • Make app open source
  • Add iOS versions for Audiobus 3/AUM
Show 9 more
  • Implement a circle of fifths version
  • Pro version with more features
  • Add background core-midi-out functionality
  • Prevent screen lock during use
  • Add a decaying hold feature
  • Support landscape mode
  • Maximizable screen display
  • Model thirds and fifths
  • Finer FFT resolution

CymaScope Cymatics Visualizer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Spectral Eye

No in-app purchases

None

CymaScope Cymatics Visualizer

No in-app purchases

Questions

Is Spectral Eye free?
Spectral Eye is free to download, with no in-app purchases.
Is CymaScope Cymatics Visualizer free?
CymaScope Cymatics Visualizer costs $12.99, with no in-app purchases.
Which has better reviews, Spectral Eye or CymaScope Cymatics Visualizer?
Spectral Eye is rated higher. Spectral Eye averages 4.9 out of 5 from 84 ratings, while CymaScope Cymatics Visualizer averages 3.9 from 11 ratings.
Do Spectral Eye or CymaScope Cymatics Visualizer have ads?
Neither Spectral Eye nor CymaScope Cymatics Visualizer shows ads.
Which is updated more often, Spectral Eye or CymaScope Cymatics Visualizer?
Spectral Eye ships an update every 7 months, and CymaScope Cymatics Visualizer every 12 months. Most recently, Spectral Eye was updated on October 25, 2026 and CymaScope Cymatics Visualizer on October 28, 2026.

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