Hearing Analyzer Portrait


"Hearing Analyzer Portrait" is an ear health check tool that allows you easily to measure the frequency characteristics of your hearing.

The human ear possesses an auditory range that up to 20000Hz. In addition to conventional audiometry (125 - 8000Hz), the extended low-frequency audiometry and high-frequency audiometry including Mosquito sounds are available. You can self-diagnose the sound listening ability.

By measuring the characteristics of your current hearing, please try to consider the wellness of your ears and the way of natural sound reproduction. It is possible to measure the hearing of the audio range by finding the minimum point in the operation of the slider volume that you can hear the tesing pure tone for each frequency. The results are displayed in easy-to-read charts like the audiogram.

Recommended to check your own hearing ability on a daily basis for the audiophile, music players, sound professionals and all music lovers. Try to check if you have the golden ears!

ss_hla_test_left ss_hla_lvl_bas
ss_hla_ath_bas ss_hla_both_mos

In general, a high risk of hearing loss has been known if you continue to hear the sounds of a high acoustic pressure level, such as, listening of the portable audio and working with too loud noises. According to WHO, some 1.1 billion teenagers and young adults are at risk of hearing loss due to the unsafe use of personal audio devices, including smartphones, and exposure to damaging levels of sound at noisy entertainment venues such as nightclubs, bars and sporting events.

# Attention:

Please use the earphones that provided with the iPhone in the hearing test.
This application generates a test tone signal with a high gain, so please special attention to the volume adjustment.
Before the diagnosis start, please set the hardware volume control to the central position of 50%.
Carefully adjust the playback volume so as not to be excessively large gain for your ears.
The classification of hearing ability refers to WHO.

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Products Information

Version : 5.0
Release date : March 9, 2023 UTC
Size : 0.6 MB
Category : Utilities, Life style
Compatibility: Compatible with iPhone. Requires iOS 15.5 or later.
Status: Now distributing.


Reduced measurement time for simple user interface.
Wideband hearing check.
Optimized for iPhone, Very compact code size.
Hearing test in 3 frequency bands: 
- LF (Low Frequency) - 30Hz to 100Hz
- BAS. (Basic frequency) - 125Hz to 12kHz
- MOS. (Mosquito, Extended High Frequency) - 13kHz to 20kHz
Test tones : Pure tone
- LF: 30, 40, 50, 60, 70, 80, 90, 100 (Hz)
- BAS: 125, 250, 500, 1k, 2k, 4k, 8k, 12k (Hz)
- MOS: 13k, 14k, 15k,16k, 17k, 18k, 19k, 20k (Hz)
Test tone type: Intermittent signal (Tone A) / Continuous signal (Tone B)
Test channel: Left / Right
Measurement result graph display:
- ATH: ATH compensation (*1)
- LVL: Linear level without ATH compensation
Clear setting and result graph. (Reset)
Snapshot of single range result graph. (Snap)
Snapshot of full range result graph. (Snap-W)


Simple testing of the hearing loss.
Confirmation of the listening skills of the audio band.
Self check the limit of audible frequency.

Top View

At the first boot, the info view will be displayed. Please make sure you read the description and attentions. If you tap the "Close" button, the top view will be displayed.

# Info view, Top view

ss_hla_info ss_hla_top

Operation procedures

Operation procedures in this application are as follows, please use this app carefully according to the guidelines.


Step 1 : Connect headphones to your iPhone. (3.5mm jack, via Lightning connector, or wireless).
Step 2 : Set iPhone's volume to 50% by using the external button.
Step 3 : Select the type of test tone (Intermittent Tone: Tone-A or Continuous Tone: Tone-B) in the Info view. The default is the intermittent tone.
Step 4 : Tap "Close" button of the Info view.
Step 5 : Set the headphone to your ears.

[Procedures of Hearing Test]

Op-1 : Tap "Right" or "Left" button to select hearing test channel.
Op-2 : Select the frequency band (LF, BAS, MOS) and a frequency to test. ie."BAS" and "1k"".
・LF: Low frequency band (30 - 100Hz)
・BAS: Basic Frequency band (125Hz - 12kHz)
・MOS:High Frequency band (13kHz - 20kHz)

Op-3 : Tap "START" button. It starts to be output the test tone, periodic sound of pure tone.
Op-4 : Adjust the software volume to find the minimum sound point at the limit of audibility. Be careful so as not to be loud and move slowly as possible.
Op-5 : Once the minimum point of hearing is determined, tap the "Stop" button.
Op-6 : Subsequently, if you want to measure the frequency of the other, please repeat from the operation of Op-1.
Op-7 : Please tap "Graph" button after these measurements were completed. Result of the measurement graph is displayed.
Op-8 : By tapping "Snap/Snap-W" button, the measurement result graph can be saved as image data to "Photos".
Op-9 : By tapping "Reset" button, you can reset the measurement result graph and each settings.

[Inaudilbe Display]

At the maximum gain of volume control, "Inaduible!" is displayed on the screen, and the measurement result is not reflected even if you tap "Plot/Stop" button. This state shows the hearing measurement limit level.In "Hearing Analyzer Portrait", the frequency button turns yellow and a warning is displayed.


Testing Result Graph

This app will display a graph result of the measurement of the minimum sound in each frequency that you could take to hear. The measurement result graph has two display formats: LVL graph (broadband frequency characteristic display, no ATH correction), and ATH graph (frequency characteristic with ATH correction).

You can switch the graph display by "LVL", "ATH", "BOTH" button.

In addition, you can switch channels in the graph display with x (left), o (right), and xo (left and right) buttons.

Please use them to compare measurement results as necessary.

LVL graph

This is a graphical representation of wideband frequency measurement.

It shows a linear frequency characteristic without ATH compensation. It covers the frequency range from 30Hz to 20kHz. Since the sensitivity of human hearing is different depending on the frequency band and will be a trapezoid graph in general.

Please use it if you're looking at a difference in each frequency.

ss_hla_lvllf ss_hla_lvl_bas ss_hla_lvl_mos

ATH Graph

This is a graphical representation applied compensation of the frequency characteristics to fit the lowest audible value of human beings. If it is a higher level and flat as possible, the graph is estimated to be good condition of your hearing.

This graph has the same characteristic display as the general hearing test (audiogram).

In addition, the Absolute Threshold of Hearing (ATH) is the minimum sound pressure level that can be detected by hearing noise-free environment. It has been corrected to be a flatter graphical representation for each frequency in the case of normal hearing. However, it may display levels vary significantly, due to the surrounding environment and individual differences. On LF and MOS frequency band, the information in ATH graph is just for reference purposes.



By tapping "Snap" or "Snap-W" button, the measurement result graph can be saved as an image data to "Photos". "Snap" stores the measurement result graph for the currently displayed single frequency band, while "Snap-W" stores the measurement result graph for the entire frequency band. Since it can save with time stamp, please use it when you want to save your measurement result.

# Image sample of "Snap"


# Image sample of "Snap-W"


Information view

Tap "Info" button on the top view to display the Information view. Please check the product information and instruction manual. Test tone selection (Tone-A/Tone-B) can also be performed in this view. To return to the top view, tap "Close" button.


Release Note

"Hearing Analyzer Portrait" version 5.0 was released on March 9, 2023. UTC
"Hearing Analyzer Portrait" version 4.0 was released on July 14, 2022. UTC
"Hearing Analyzer Portrait" version 3.3 was released on March 3, 2021. UTC
"Hearing Analyzer Portrait" version 3.2 was released on February 24, 2021. UTC
"Hearing Analyzer Portrait" version 3.1 was released on November 18, 2020. UTC
"Hearing Analyzer Portrait" version 3.0 was released on March 28, 2020. UTC
"Hearing Analyzer Portrait" version 2.1 was released on August 6, 2019. UTC
"Hearing Analyzer Portrait" version 2.0 was released on May 30, 2018. UTC
"Hearing Analyzer Portrait" version 1.2 was released on March 2, 2016. UTC
"Hearing Analyzer Portrait" version 1.1 was released on April 22, 2015. UTC
"Hearing Analyzer Portrait" version 1.0 was released on October 7, 2014. UTC


We hope that you keep to have an interest on a daily basis to the wellness of hearing by this app. If you feel the need to health management of ear, it is recommended to visit the medical specialist.
This app does not support wireless control of volume/channel balance unique to wireless audio devices such as AirPods.
Please be careful that high-volume sounds can damage ears, even if your ears don't perceive them as being too loud. Please have enough attention to adjust the volume of the iPhone. Recommend to use safely in airplane mode or WiFi disabled mode.
Reference information on WHO documentation for hearing loss.

- Deafness and hearing loss
- New WHO-ITU standard aims to prevent hearing loss among 1.1 billion young people
- Video gamers worldwide may be risking irreversible hearing loss and/or tinnitus


This app is not intended to be used for a medical purpose. This app is not intended to diagnose, prevent, monitor, treat, alleviate or compensate a disease, an injury, a disability or a handicap. If you think you have hearing problems, please consult with your doctor, or other qualified healthcare professional. Please use this app at your own risk. TOON,LLC don't take any responsibility for direct or indirect damage that could result from its use.

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