Age Test: Tone Generator
Hear and see sound in class
Free · Designed for iPad. Not verified for macOS.
A tone generator, a live spectrum and a "how high can you hear?" check for the science class. Free, no ads, and nothing leaves your device.
Age Test is a tone generator and sound viewer for the science class. Turn the aluminium knob to play any pitch from 20 Hz to 22 kHz, watch it on a live spectrum, and find the highest tone each listener reports hearing.
LISTEN
• Press the knob to play, turn it to tune: 8 to 22 kHz in 0.1 kHz steps, or the full range from 20 Hz
• Sweep slowly upward, so a room can keep hands up while they still hear the tone
• Left ear, right ear or both
• A frequency readout with plain context for every pitch
SEE THE SOUND
• The microphone draws a live spectrum and names the loudest pitch
• A tone still stands as a peak after the hands have gone down
HOW HIGH?
• Tones from 8 to 20 kHz, one kHz apart, with hidden silent checks against guessing
• Set a comfortable volume first; turning it up during the tones stops the check
• Shows the highest tone you reported hearing, with this equipment and volume. It plays selected tones and stops at the first one you miss, so it is not an exact hearing limit.
IN CLASS
Human hearing is commonly described as reaching from 20 Hz to 20 kHz, and the highest pitches tend to fade first as ears age. Age Test lets a class hear, and see, where that edge sits with the equipment in the room.
FOR LEARNING, NOT A MEDICAL DEVICE
Age Test does not assess anyone's hearing and says nothing about the health of their ears. If you are worried about your hearing, see an audiologist.
Free, with no ads and no account. Nothing leaves your device: the microphone is only analysed on the device, never recorded.
Age Test is back, rebuilt for today's iPhone and iPad with the original knob.
• Any pitch from 20 Hz to 22 kHz, a slow sweep, left and right ears
• See the sound: a live spectrum from the microphone
• How high?: tones from 8 to 20 kHz with hidden silent checks
• English and Japanese
The developer, ObjectGraph LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ObjectGraph LLC
- Size
- 2.2 MB
- Category
- Education
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © ObjectGraph LLC