Comparison

Ukulele Notepad vs Wavelet Voice Sonogram

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

Head to head
About

Ukulele Notepad

This app allows ukulele players to quickly create, edit, and share song ideas using a touch-friendly tab editor. It supports custom tunings, various musical techniques, and offers cloud saving and PDF export options.

Highlights
  • Create and edit ukulele tabs
  • Custom tunings and string support
  • Add chords, lyrics, and performance notes
  • Cloud saving and email sharing
  • Export to PDF or text
  • Autoscroll for playback
  • Left-handed view option
Features
Read full description

Ukulele Notepad helps you easily and quickly jot down song ideas in guitar tab, save them to the cloud and email them to band mates. I created this app as I found that when playing around with ideas on my own, or after a jam session, I was still using paper to jot down ideas. I have tried some of the other tab writing apps out there but none of them used the touch screen like a guitar fret board which really speeds things up. I'm keen to make this app as useful as possible so please feel free to contact me if you want any new features added. Create and Edit Tab: - Edit song details like title, artist, transcribed by and tempo - Add time signatures, lyrics and performance notes - Add chords, strum patterns and lyrics above your tabbed notes (no other apps I've seen support this!) - Add any number of strings and custom tunings including 4,5,6 and 7 string guitars/bass guitars - Use touch screen to quickly add notes with a single tap - Choose from common chord patterns to save time - Add techniques likes slides, hammer ons, pull offs muted notes, harmonics, tremolo, vibrato, ghosts/ties, tapping and more - Backspace as well as delete button for faster editing - Cut, copy and paste sections of tab, even between different songs - Undo button - the last 10 actions are recorded and can be undone - Continuous chord mode - saves having to perform an extra tap to start adding chords - Option to view notes on the fret board - Supports repeated bar notation - Tab Playback (no note modulation for now) - Can change guitar neck to left handed view - Supports note lengths from whole notes to 1/64, dotted notes and triplets - Add a capo View, Export and Share: - Export to PDF or text - Transpose songs up and down - Organize songs by artists or use tags to create albums and setlists - Use autoscroll to view tabs and play along - Layout optimised for both tablets and phones - Zoom in and out depending on your screen size - Print from device - Save songs to file in your cloud storage like Dropbox, or export via email. - Ability to perform a full backup and restore - useful if you are switching devices - Import songs shared from other people's Guitar Notepad apps - View and search through your songs by title, artist name or last modified time

About

Wavelet Voice Sonogram

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"Wavelet Voice Sonogram" is a sound spectrogram app that performs time-frequency analysis of acoustic signals. A spectrogram is a graph displaying the results of a sound frequency spectrum analysis, with time on the horizontal axis, frequency on the vertical axis, and signal strength represented by colors. This app can perform acoustic analysis and display the spectrograms by using three time-frequency analysis methods, Wavelet analysis, Octave Band analysis, and FFT analysis. It can also record sounds from iPhone's built-in microphone. While playing back a recording, you can search for the desired sound and analyze it. "Wavelet Voice Sonogram" makes it easy to analyze the acoustics of speech, instrumental sounds, noise, and more. It can also be used to learn the basics of speech analysis. Features: - Acoustic analysis can be performed using PCM data recorded with the iPhone's built-in microphone. It is possible to analyze 5 seconds of sound data backward from a user-specified point in time. - Three types of acoustic analysis, FFT analysis, octave band analysis and wavelet analysis, can be performed simultaneously. - PCM sound recording and playback is possible up to about 180 seconds, and the audio waveform graph and FFT analysis graph are displayed. While playing back sound, you can search for sound at any point in time. - Zoom in on a specific 10 seconds of PCM data and play back the sound. Used to find a specific sound at the point in time you want to analyze. - The spectrogram analysis result and time axis waveform can be contrasted and played back. Specifications: - Sampling frequency: 48 kHz - PCM recording time: approx. 180 seconds max. - Sound zoom function (10-Sec): Zooms in on any 10 seconds of PCM data and plays back the sound. - 3 types of acoustic analysis function (Analysis): About 5 seconds (Analysis points can be specified using the Time position slider.) -- FFT analysis (FFT): FFT 2048 points -- Octave band analysis (OCT): 1/48 octave band -- Wavelet analysis (DWT): Gabor Wavelet - Sound recording and playback, sound waveform and FFT graph display (Main): PCM graph, 10sec zoom graph, FFT graph. - Time position slider: Points to the cursor position on PCM graph. - Spectrogram display (FFT / OCT / DWT): 5 sec PCM graph and spectrogram analysis graph (vertical axis - time [0 - 5.0 sec], horizontal axis - frequency [100Hz - 8kHz]) - Snapshot (Snap): Save the analysis image in "Photos". Notes: - The acoustic analysis time varies significantly depending on the performance of your iPhone (product generation). It may take about 5 to 20 seconds. - Wireless (Bluetooth) headphones and headsets are not supported. - The first time the app accesses the built-in microphone and Photos after installation, the iOS system will ask you for permission to access them. If you have not enabled this setting, the application will not be able to access them due to iOS system privacy restrictions. Please enable the access permission in the iOS setting "Settings > Privacy & Security > Photos or Microphone". Please visit our iOS app support page for more information on this app.

Screenshots

Ukulele Notepad4 screens
Wavelet Voice Sonogram4 screens

Verdict

The call

The clearest difference is price: Ukulele Notepad at $1.99 against Wavelet Voice Sonogram's $6.99. Ukulele Notepad also leads on update cadence (every 2 months vs every 8 months) and device support (3 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

CostPrice · In-app purchases · Ads · Monetization

Ukulele Notepad costs $1.99 and Wavelet Voice Sonogram $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ukulele Notepad ships an update every 2 months, Wavelet Voice Sonogram every 8 months. The most recent releases landed on October 1, 2026 and September 26, 2026 respectively.

Scorecard4 real differences · 6 level
Ukulele Notepad versus Wavelet Voice Sonogram: the parameters behind the verdict, then further details
ParameterUkulele NotepadWavelet Voice Sonogram
Price$1.99 — better$6.99
Rating3.5 (20 ratings) — better—
Positive reviews52.4% of reviews—
Number of ratings20 — better—
Update frequencyEvery 2 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better26.2
Further details — not scored
Size10 MB0 MB
Age rating4+4+
DeveloperCodefadTOON,LLC

In-app purchases

None

Ukulele Notepad

No in-app purchases

None

Wavelet Voice Sonogram

No in-app purchases

Questions

Is Ukulele Notepad free?
Ukulele Notepad costs $1.99, with no in-app purchases.
Is Wavelet Voice Sonogram free?
Wavelet Voice Sonogram costs $6.99, with no in-app purchases.
Do Ukulele Notepad or Wavelet Voice Sonogram have ads?
Neither Ukulele Notepad nor Wavelet Voice Sonogram shows ads.
Which is updated more often, Ukulele Notepad or Wavelet Voice Sonogram?
Ukulele Notepad ships an update every 2 months, and Wavelet Voice Sonogram every 8 months. Most recently, Ukulele Notepad was updated on October 1, 2026 and Wavelet Voice Sonogram on September 26, 2026.

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