# Age Test: Tone Generator — Hear and see sound in class > Educational tone generator and sound spectrum analyzer for science classes. (iPhone/iPad app by ObjectGraph LLC.) - Source: https://appshunter.io/ios/app/age-test-tone-generator/id321825050 (this page in markdown: same URL + `.md`) - Developer: [ObjectGraph LLC](https://appshunter.io/developer/284700705) - Category: Education, Utilities - Price: Free - Rating: 1.00/5 from 4 App Store ratings · 19 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 2 MB - Languages: American English, Japanese - Released: 2009-07-11 - Data updated: 2026-10-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/age-test-tone-generator/id321825050/reviews.md ## What is Age Test? 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. ## Key features - Adjustable frequency knob (20 Hz to 22 kHz) - Live sound spectrum visualization - Ear-specific tone playback (left, right, both) - Frequency readout with context - Hearing range testing with silent checks - Classroom demonstration tool ## Recent user reviews (10 of 19) All indexed reviews: https://appshunter.io/ios/app/age-test-tone-generator/id321825050/reviews.md ### 1/5 — Horrible *2016-07-26* It doesn't even open. I click the app and it just instantly closes. I got it as a joke but still. It should at least open. ### 1/5 — Doesn't work *2016-01-28* Just crashes and doesn't open. Don't waste your money. I want my 79p back can you hear that?!!!! ### 1/5 — Terrible *2015-02-01* I didn't see that review until it was too late, I am 14 and not a single sound was audible do not buy. ### 1/5 — WORST APP EVER *2014-01-08* The worst app ever created. DO NOT BUY. I'm 20 years old and have excellent hearing however could only hear the "age 40+" it's total b.s. don't waste your money like I unfortunately did. ### 5/5 — Very simple, does what it says :) *2011-06-02* Nice little app that does exactly what it says, give you an estimate of your age governed by how high you can hear. Not really an age detector, just an interesting guide to how good your hearing is. Apparently at 28 I have the hearing of a 45 year old! this wouldn't surprise me, I do have inherently bad hearing for my age, lol. I like how simple the app is. No frills! Just the way I like it. ### 2/5 — できれば *2010-09-20* 高い音が聞こえないのはもう素直に受け入れるが、できれば30歳以上の目盛をもっと細かくして欲しい… ### 5/5 — Wonderful design and concept!! *2010-08-26* I showed this app to a skeptic and he could not beleive his ears :-) He immediately purchased his own copy and told me he will try it with his kids . ### 5/5 — Yeah! I can here it! *2010-08-26* Just updated fir iPhone 4, thanks ! Upto 17khz even I'm 30. I beat my age! ### 5/5 — Thanks for the update *2010-08-25* Great to see this app finally get a HD look! Thanks for the retina-update! ### 5/5 — It Works! *2010-08-07* Tested casually with a few friends. Age predictions were fairly accurate. A few had better or worse hearing, but only the youngest in the group could hear the higher frequencies. Unlike some of the other similar apps, this one isn't ugly. A few comments regarding other reviews: Update for retina display...seriously?! It's not an app based on graphics. Not consistent. Works all the time every time for me. Hardware problems maybe? ## Frequently asked questions about Age Test ### What is Age Test? Age Test is a free educational tool designed for science classes. It allows users to generate sound frequencies from 20 Hz to 22 kHz and visualize them on a live spectrum, helping to explore human hearing ranges. ### How does Age Test work? You can press a knob to play sounds and turn it to tune frequencies. The app displays a live spectrum of the sound and identifies the loudest pitch. It also includes a feature to test the highest tone a listener can hear. ### Is Age Test a medical device? No, Age Test is explicitly stated as being for learning, not a medical device. It does not assess hearing health, and users concerned about their hearing should consult an audiologist. ### Does Age Test have ads? No, Age Test is free with no ads. The developer has confirmed that the app is ad-free, providing an uninterrupted user experience. ### What devices does Age Test support? Age Test is available for iPhone and iPad devices. It was last updated to version 2.0 on October 9, 2026. ### Does Age Test collect user data? No, Age Test prioritizes user privacy. Nothing leaves your device; the microphone data is analyzed solely on the device and never recorded. ### How accurate is the hearing test feature in Age Test? The 'How High?' feature plays tones from 8 to 20 kHz and stops at the first one missed. It's designed to show the highest tone reported with the current equipment and volume, but it is not an exact hearing limit. ### What is the age rating for Age Test? Age Test has an age rating of 4+. This indicates it is suitable for children aged 4 and older, making it appropriate for use in elementary science classes. ## Version history (last 5 releases) ### 2.0 — 2026-10-09 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 ### 1.3 — 2011-01-28 Name has been changed ### 1.2 — 2010-08-24 New iPhone 4 Graphics Optimized Sound ### 1.1 — 2009-09-26 bug fix name change ### 1.0 — 2009-07-10 No release notes. ## More apps by ObjectGraph LLC - [iRetroPhone - Rotary Dialer](https://appshunter.io/ios/app/iretrophone-rotary-dialer/id284700702) - [iSameGame](https://appshunter.io/ios/app/isamegame/id291197345) - [iHalloween: Haunted Porch](https://appshunter.io/ios/app/ihalloween-haunted-porch/id294063618) - [iSeismometer](https://appshunter.io/ios/app/iseismometer/id304190739) - [Fart Piano Free - Make Everyone Laugh](https://appshunter.io/ios/app/fart-piano-free-make-everyone-laugh/id332117986) All apps by ObjectGraph LLC: https://appshunter.io/developer/284700705 ## Related topics [age test](https://appshunter.io/ios/topics/age-test) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*