Version history
Spectral Eye
32
ASO score
Text
15/100
Reviews
50/100
Graphic
60/100
Other
0/100
App Rating
4.4
Votes
140
App Age
13y 5m
Last Update
Feb 27, 2021
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
4.39
|
4.56
|
-4%
|
|
Number of Ratings (Voted)
|
139
|
588.5K
|
-100%
|
|
App Age
|
13y 5m
|
8y 1m
|
+65%
|
|
In-app Purchases Price
|
$0
|
$42
|
|
|
Update Frequency
|
1770d
|
30d
|
+5 800%
|
|
Title Length
|
12
|
25
|
-52%
|
|
Subtitle Length
|
0
|
27
|
|
|
Description Length
|
3 026
|
2 701
|
+12%
|
|
Number of Screenshots
|
468
|
1249
|
-63
%
|
|
Size
|
0MB
|
220MB
|
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 25, 2025 | Jan 01, 2026 |
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No results were found!
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| Top | Dec 25, 2025 | Jan 01, 2026 |
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No results were found!
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| Top | Dec 25, 2025 | Jan 01, 2026 |
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No results were found!
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| Top | Dec 25, 2025 | Jan 01, 2026 |
|---|---|---|
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No results were found!
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Ranking Keywords in United States
| Keywords | App Rank |
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Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
12
of 30
)
Spectral Eye
Subtitle
(
Characters:
0
of 30
)
Description
(
Characters:
3026
of 4000
)
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!}
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Other
Additional Information
Version history
1.0.19
Feb 27, 2021
• UX/UI is more friendly
• Features:
- Push notification when consult a pharmacist while application is inactive
- Member card can be flipped to generate membership QR code
- View branch detail
- User can see items added by pharmacist realtime
• Improve performances:
- QR code/Barcode scanner handle response more accurately
- Branch map can be navigated by GoogleMap
- Pharmacist consulting chat module
- Save latest selected delivery address (pinned map option)
• Fix bugs:
- Fix time in chat was display incorrectly
- OTP may be requested twice for first registering
- Cart’s badge may not reset after successfully purchased
- Pin map for delivery address may improperly update current location in some devices
- Cart’s badge is not updated correctly for some case
- Time in chat display incorrectly if device set calendar to other than Gregorian calendar
2.0
Jan 25, 2017
MIDI support added.
Updated for iOS 10.