Timer vs Wavelet Voice Sonogram
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer
This advanced timer allows for precise time management across various activities. Set multiple special events with customizable triggers like sounds, messages, or screen flashing. It's ideal for games, workouts, cooking, meditation, and any task requiring accurate timing, even when the app is in the background.
- Multiple complex timers simultaneously
- Scheduled event triggers (sounds, messages, photos)
- Customizable display modes (textual, graphical)
- Background operation with sound/message alerts
- Looping timers
- Delayed start and flexible stop time entry
- Screen blocking and flashlight alerts
Read full descriptionHide full description
Timer is an advanced timer for performing various tasks at specific times that you set. It is your perfect companion for board games, sport workouts, cooking, zen meditation or whatever activity that needs a precision and powerful timer. Timer allows to define multiple special events that will be triggered when the timer is running. Sounds, messages, photos, screen flashing and more actions can be triggered at any time thanks to a complex time scheduling system (that can be easily previewed). The majority of these actions can be done when the application is open, but it is still possible to play sounds and display messages when the application is closed. Here are some events you'll be able to create (and combine) : * "Play a Gong sound 30 seconds before end" * "Every 10 seconds during 1 minute, produce a sound with an increasing pitch" * "Play a tic tac sound every seconds" * "Once One-half the time is elapsed, play an iPod song and show a custom message on the screen" * "While in background, plays a Tibetan bell sound 4 times (every 25%) until 6PM" * "Take a photo every minute" Here are the main features : - 9 complex timers with time scheduled events can be used at the same time. - The timer can be looped forever or for a specific number (the number of loops being displayed). - Elapsed time, remaining time, current time can be either displayed. Various display modes are available (including textual or graphical ones). - The time is displayed in full screen, in the biggest possible way. Two different areas can be customized. - The timer start can be delayed, allowing to have a short preparation time before the timer is automatically started. - The stop time can be entered as a relative duration or as an absolute hour value. - Portrait and Landscape visualization modes are handled in all application screens. - The timer can be used when silence is needed (thanks to a flashing screen, vibrations and a dimmed display). - When the timer is done, the time is still displayed, allowing to know since how long the timer elapsed. - The screen can be blocked, keeping the timer visible, in order to avoid pressing accidentally the buttons. - Different dedicated alarm sounds can be used (Bell, Cooking timer, Watch, Gong, Danger, Lama Bell...) - Shepard tones can also be used : those tones creates the auditory illusion of a tone that continually ascends or descends in pitch. - Import custom sounds or record them directly. Use them as audio alerts when the application is opened. Play a random iPod song. - Custom musics/sounds can be selected from the iPod library to be used as internal alarms. The iPod music can also be stopped. - Automatically take pictures at given times. Use the flashlight as a visual alert. - Load, save, import and export your settings, allowing you to share and have multiple configurations ready to be used. - Customize the look of each timer to your taste.
Wavelet Voice Sonogram
Read full descriptionHide full description
"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
Verdict
The clearest difference is price: Timer at $3.99 against Wavelet Voice Sonogram's $6.99. Timer also leads on device support (3 vs 1) and iOS requirement (12 vs 26.2). On update cadence, 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
Timer costs $3.99 and Wavelet Voice Sonogram $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Timer ships an update every 7 months, Wavelet Voice Sonogram every 8 months. The most recent releases landed on September 25, 2026 and September 9, 2026 respectively.
| Parameter | Timer | Wavelet Voice Sonogram |
|---|---|---|
| Price | $3.99 — better | $6.99 |
| Rating | 4.8 (218 ratings) — better | — |
| Positive reviews | 80.2% of reviews | — |
| Number of ratings | 218 — better | — |
| Update frequency | Every 7 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12 — better | 26.2 |
| Further details — not scored | ||
| Size | 24 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Francis Bonnin | TOON,LLC |
Bugs and requests
Timer
Reported bugs
3 issues- Timer randomly changing time during use
- Alarm not sounding when app is in background
- Screen dimming and locking issues
Requested features
4 requests- Multiple timers running concurrently
- Ability to save and share custom timer presets
- More vibration and sound alert options
- Improved background mode and iOS 4 support
Wavelet Voice Sonogram
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Timer
No in-app purchases
Wavelet Voice Sonogram
No in-app purchases
Questions
Is Timer free?
Is Wavelet Voice Sonogram free?
Do Timer or Wavelet Voice Sonogram have ads?
Which is updated more often, Timer or Wavelet Voice Sonogram?
Other comparisons















