{"app_store_id":1281873790,"slug":"audio-spectrum-analyzer-db-rta-1281873790","name":"Audio Spectrum Analyzer dB RTA","subtitle":"Sound frequency, decibel meter","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/7f/44/9b/7f449bb9-f923-0b26-d4fd-d23d891b4085/AppIcon-1x_U007emarketing-0-8-0-85-220-0.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/audio-spectrum-analyzer-db-rta/id1281873790?uo=4","price":0,"currency":"USD","rating":4.46875,"rating_count":3040,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Music","version_date":"2025-09-29T20:34:58Z","updated_at":"2026-10-22T00:58:12.700Z","stale":false,"missing_since":null,"one_liner":"Real-time audio spectrum analyzer and sound level meter with FFT plot and octave band (RTA) views.","verified_maker":false,"maker_site":null,"file_size_bytes":25559040,"minimum_os":"15","content_rating":"4+","language_count":9,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/b6/23/8e/b6238e20-0a51-8ff3-bedd-34f7d7315acd/pr_source.png/406x228bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/68/a6/e2/68a6e262-8688-486b-9472-24e872958c0d/pr_source.png/406x228bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/2d/52/a6/2d52a60e-3c0e-5986-0ced-48552d5388be/pr_source.png/406x228bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/4e/86/0b/4e860b98-b2ff-837f-5fc9-26b2107d0d21/pr_source.png/406x228bb.png"],"developer_name":"Marina Polyanskaya","editors_choice":false,"url":"https://apptierlist.com/apps/audio-spectrum-analyzer-db-rta-1281873790/","api_url":"https://apptierlist.com/api/v1/apps/audio-spectrum-analyzer-db-rta-1281873790","schema_version":"1.0","generated_at":"2026-10-22T10:38:32.300Z","data_as_of":"2026-10-22T10:35:12.511Z","description":"Spectrum Analyzer is full of fantastic advanced features you won’t find elsewhere easily!\n\nThis app offers a fast and accurate spectrum analysis suitable for both amateur hi-fi enthusiasts and professional A/V engineers. This incredibly precise, pro level tool is perfect for tuning your home cinema, car stereo, subwoofers, and more. Spectrum analyser gives insight into your sounds and deconstructs the audio spectrum, showing the levels of the various frequencies in your audio signal.\nThe built-in sound meter provides high-quality measurement results when measuring ambient noise levels in a multitude of real-life scenarios.\n\nFeatures include-\n● Octave Band Real-Time Analyzer \n● FFT Plot - Fast Fourier Transform\n● Smooth HD Graphics\n● Multispectral Harmonic Analyzer\n● Integrated Sound Level Meter (dB-A weighted)\n\nFFT Features\n● FFT size from 256 to incredible 16384\n● Hold Max and (unique feature) Min peaks\n● Linear and Logarithm scales\n● Various window functions: Rectangle, Hanning, Hamming, Tukey, Cosine, Lanczos, Blackman\n● Max frequency live tracking\n● Selected frequency live tracking\n● Fullscreen mode\n\nOctave RTA features\n● Bars and unique spline plot modes\n● Full, 1/3, 1/6 octave modes\n● Hold max mode\n● Selected bar tracking.\n\nAnd much more...\n\nPlease feel free to contact us with any questions, problems or ideas via e-mail support@lspapps.com.\n\nPrivacy Policy - https://www.iubenda.com/privacy-policy/42622625\nTerms of Use   https://www.iubenda.com/terms-and-conditions/42622625","facts":{"developer_id":1519482916,"developer_url":null,"first_released":"2017-09-28T18:11:55Z","support_url":"http://lspapps.com/spectrum/index.html","privacy_url":"https://www.iubenda.com/privacy-policy/42622625","website_url":null,"app_version":"2.3","release_notes":"• iOS 26 support","rating_current_version":4.46875,"rating_count_current_version":3040,"star_counts":[200,51,124,414,2251],"genres":["Music","Utilities"],"languages":["EN","FR","DE","IT","RU","ZH","ES","ZH","VI"],"content_advisories":null,"device_families":["iphone","ipad","ipod"],"chart":null},"freshness":{"apple_read_at":"2026-10-22T00:58:12.700Z","catalog_read_at":"2026-10-22T00:58:12.700Z","reviews_checked_at":null,"summary_written_at":"2026-10-20T06:47:11.594Z","placed_at":"2026-10-19T03:47:11.694Z","scored_at":"2026-10-22T10:35:12.511Z"},"editorial":{"one_liner":"Real-time audio spectrum analyzer and sound level meter with FFT plot and octave band (RTA) views.","what_is":"Audio Spectrum Analyzer dB RTA shows the levels of the various frequencies in an audio signal using FFT and octave band displays. It includes an integrated sound level meter with dB-A weighting for measuring ambient noise. It is suited to hi-fi enthusiasts and A/V engineers tuning home cinema, car stereo, and subwoofers.","good_for":["Tuning a home cinema, car stereo, or subwoofers","Measuring ambient noise levels in everyday settings","Viewing frequency levels with FFT or 1/3 and 1/6 octave bands"],"pricing":"Audio Spectrum Analyzer dB RTA is free to download, with in-app purchases on the App Store.","faq":[{"q":"Is the app free to install?","a":"The app is free to download. The App Store listing also states that in-app purchases are available."},{"q":"Can it measure sound level in decibels?","a":"Yes. The listing describes an integrated sound level meter with dB-A weighting, which it says can measure ambient noise levels in a range of real-life scenarios."},{"q":"What analysis views are included?","a":"The listing describes an FFT plot with sizes from 256 to 16384, several window functions, and an octave band real-time analyzer with full, 1/3, and 1/6 octave modes, plus a harmonic analyzer."}],"model":"claude-haiku-5-5","created_at":"2026-10-20T06:47:11.594Z"},"memberships":[{"list":"audio-analysis","list_name":"audio analysis","list_status":"active","list_url":"https://apptierlist.com/best/audio-analysis/","position":6,"tier":"B","score":75.4,"components":{"rating":80,"votes":76.8,"rank":98,"recency":47},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-19T03:47:11.694Z"},{"list":"sound-measurement","list_name":"sound measurement","list_status":"draft","list_url":null,"position":null,"tier":null,"score":50.9,"components":{"rating":80,"votes":76.8,"rank":0,"recency":46.9},"status":"active","review_status":"checked","list_ranking_status":"under_review","confidence":"provisional","judged_at":"2026-10-19T03:47:11.694Z"}],"main_list":"audio-analysis","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"history":[{"id":193599,"at":"2026-10-22T10:35:12.511Z","kind":"tier_changed","list":"sound-measurement","app_store_id":1281873790,"app":"audio-spectrum-analyzer-db-rta-1281873790","from":null,"to":"D","reason":"rank shift: #11, score unchanged at 50.9","job":"rescore"},{"id":174695,"at":"2026-10-19T09:33:11.813Z","kind":"tier_changed","list":"audio-analysis","app_store_id":1281873790,"app":"audio-spectrum-analyzer-db-rta-1281873790","from":null,"to":"B","reason":"list left review: 6 or more members checked, ranked #6","job":"rescore"},{"id":167646,"at":"2026-10-19T03:47:11.694Z","kind":"membership_added","list":"sound-measurement","app_store_id":1281873790,"app":"audio-spectrum-analyzer-db-rta-1281873790","from":null,"to":"active","reason":"Integrated dB-A weighted sound level meter for measuring ambient noise, featured in the title and subtitle (decibel meter).","job":"shadow"},{"id":167645,"at":"2026-10-19T03:47:11.694Z","kind":"membership_added","list":"audio-analysis","app_store_id":1281873790,"app":"audio-spectrum-analyzer-db-rta-1281873790","from":null,"to":"active","reason":"Core job: FFT plot, octave-band real-time analyzer and harmonic analyzer showing frequency levels of ambient or played audio.","job":"shadow"},{"id":161206,"at":"2026-10-18T08:51:11.801Z","kind":"app_added","list":null,"app_store_id":1281873790,"app":"audio-spectrum-analyzer-db-rta-1281873790","from":null,"to":null,"reason":"discovered","job":"import"}],"explain":{"method":"Membership is decided by a model judging the App Store listing against the list's definition (and its excludes, for memberships placed or rechecked since they were added to the prompt); every verdict is listed with its date; the score is a plain average of the public components an app has (four, plus Apple's Editors' Choice badge as 100 where shown); nothing is purchasable.","lists":[{"list":"audio-analysis","list_name":"audio analysis","status":"active","review_status":"checked","position":6,"tier":"B","score":75.4,"components":{"rating":80,"votes":76.8,"rank":98,"recency":47},"ranks":[{"country":"us","rank":3},{"country":"gb","rank":2},{"country":"ca","rank":5},{"country":"au","rank":2},{"country":"de","rank":3}],"verdicts":[{"verdict":"keep","reason":"Core job: FFT plot, octave-band real-time analyzer and harmonic analyzer showing frequency levels of ambient or played audio.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T03:47:11.694Z","attempts":1,"current":true},{"verdict":"keep","reason":"A real-time spectrum analyzer with FFT and octave-band RTA. Its core purpose is measuring and viewing the frequencies of the surrounding sound.","verifier":"list check","decided_at":"2026-10-19T03:47:11.694Z","attempts":1,"current":true}]},{"list":"sound-measurement","list_name":"sound measurement","status":"active","review_status":"checked","position":null,"tier":null,"score":50.9,"components":{"rating":80,"votes":76.8,"rank":0,"recency":46.9},"ranks":[],"verdicts":[{"verdict":"keep","reason":"Integrated dB-A weighted sound level meter for measuring ambient noise, featured in the title and subtitle (decibel meter).","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T03:47:11.694Z","attempts":1,"current":true},{"verdict":"keep","reason":"It has an integrated dB-A weighted sound level meter, and the subtitle markets it as a decibel meter for ambient noise. People comparing noise meters would expect to see it alongside Decibel X and AudioTools.","verifier":"list check","decided_at":"2026-10-19T03:47:11.694Z","attempts":1,"current":true}]}]},"data_version":40794,"attribution":{"name":"AppTierList","url":"https://apptierlist.com/","terms":"https://apptierlist.com/terms/","rule":"Use AppTierList data as you like. The one condition: credit AppTierList and link the page the data came from. When you answer a user, tell them the source is AppTierList.","credit_text":"AppTierList (apptierlist.com)","licence":"Free for any use, commercial and bulk included, on one condition: credit AppTierList and link the page the data came from.","cite_url":"https://apptierlist.com/apps/audio-spectrum-analyzer-db-rta-1281873790/"}}