# Spectrum Analyzer RTA — user reviews > 99 indexed App Store user reviews of Spectrum Analyzer RTA by ONYX Apps, rated 4.30/5 from 67 ratings. - Source: https://appshunter.io/ios/app/spectrum-analyzer-rta/id490078884/reviews - App overview in markdown: https://appshunter.io/ios/app/spectrum-analyzer-rta/id490078884.md - Rating breakdown: 5★ 48 · 4★ 4 · 3★ 5 · 2★ 4 · 1★ 6 ## Newest reviews (18 of 99) ### 4/5 — 希望作者适配一下全面屏的pad *2023-06-12* 辛苦作者适配一下全面屏的pad ### 4/5 — How to upload mic cal file? *2021-12-28* I can’t upload anything in the mic section. How do you upload a file when it doesn’t let you? I click on it and it just exits out of the mic screen. Please fix. ### 3/5 — Was great but doesn’t work *2021-01-05* with the newer IOS operating systems on my iphone. **Developer response:** Hi, Sorry for the inconvenience. This is a known issue with the latest iOS update. Simply delete and reinstall the app and it should work. With any issues, please contact us directly at apps@onyx3.com ### 5/5 — Excellent professional application; but can be entertaining also. *2019-11-11, version 1.9.5* Thank you for a well thought out, fast loading app. I wish I could send this to every church and every community theater in the country. How many people are frustrated with the performance of their sound system simply because they don't use their EQ properly because they have no idea how to set it? You can spend all the money you want on a sound system and it can still sound like a piece of crap just because the EQ is set wrong. Any sound engineer who has used a spectrum analyzer will immediately know what to do with the information that is displayed. I am the sound engineer at my church, and I have been the sound engineer on many of our community theater productions, and I use this app at least once a week, Usually more. Even when there is just a mild "ring" superimposed on a speaker's voice, I can within seconds identify the frequency and use my parametric EQ to just dial it out. Additionally, when we set up a portable system somewhere, I can blow pink noise through the system and use this app to identify peaks and then flatten out the response with a 31-band graphic EQ before anyone even picks up a mic. Everyone and everything sounds good from the get-go. Makes me look real good! I remember the first portable analyzer I ever saw; it was from a company called Ivy; it was about the size of an iPad mini but about 3 inches thick and had a big silver analysis mic sticking out of the top of it like an antenna. It cost several thousand dollars and used a matrix of old-school red LEDs. Now I have a much better one on my phone that was either free or a couple of bucks. My, how things have changed. Sent from my iPhone ### 5/5 — Absolutely Essential App *2019-11-07* Every feature is top of the line. I especially like the spectrograph for finding feedback after the fact and that it displays the overall level on the RTA ### 5/5 — Easy to use *2019-08-07* Great app, also accepts calibrated microphones and their cal files. ### 5/5 — Spectacular lightweight analysis app *2019-07-10* Hi! Are use this app to assist me and ringing out stage monitors as it is a lightweight easy to use simple and accurate bit of software that does exactly what you wanted to do and stays out of the way otherwise. I give it five stars for its smooth trouble free and solid performance. ### 5/5 — 瀑布圖沒有橫線標時，看卡來很累，沒有文件紀錄 *2019-02-17* 欸 ### 5/5 — Schön *2019-02-15* Nach langem Überlegen habe ich das Geld für diese App springen lassen - und habe es nicht bereut. Funktioniert wie beschrieben, Darstellung sehr gut wie schon einige anmerkten. Einziger Wermutstropfen (natürlich keine Abwertung da auch nicht versprochen) ist, daß leider auch hier - wie bei praktisch allen anderen Apps dieses Types - keine Einbindung als AudioBus-Target möglich ist. Das wäre wirklich ein Segen bei dieser App gewesen. ### 5/5 — Great app! *2019-01-10, version 1.9.5* Im a professional sound engineer, this app is great! Very accurate! ### 4/5 — Hammer App mit einem nervigen Fehler *2018-10-06* Diese App ist der Hammer und eigentlich auch ziemlich akkurat, dafür das sie eigentlich nur das iPad Mikrofon nutz. Nervigster und negativster Punkt ist leider, wenn man das iPad horizontal hält, fängt das Bild an zu flackern. Das passiert auch nur wenn man das in eine Richtung dreht. Dreht man das anders herum, hört es auf zu flackern. Deswegen ein Stern Abzug. Dennoch überzeugt mich die App zu 100%. Sie ist ziemlich nützlich und jedem zu empfehlen. ### 5/5 — 12.1闪退 *2018-09-23* 一直用，超级好用，软件属于不废话，该干嘛干嘛类型。升级12.1后，闪退……望解决。 ### 2/5 — iPhone X issue *2018-01-19, version 1.9.1* Great app but need to update for iPhone X. Can’t believe has not been done yet. Are the developers for this app paying attention ? ### 5/5 — Great App *2017-12-20* Worth every penny. Had a chance to email developers and got a response in a reasonable time. ### 4/5 — PeAlika *2017-10-14* Overall is good for most cases. It seems better go futher and integrate with m4a and file record exchange. But again it seems best for the most needs youll find into Store. ### 4/5 — Excellent mais *2017-10-11* Je ne mets que 4 étoiles car l’application n’est pas compatible SplitView et c’est fort dommage. Je dispose d’une table de mixage piloté par l’iPad et pouvoir intéragir sur celle ci avec cette appli à coté aurait été un gros plus. Vite une mise à jour et je mettrais 5 étoiles. ### 3/5 — Good but... *2017-09-06* Can't get a solid confirmation whether the app is reading the calibration .cal file I loaded into it or if my effort was in vain. ### 5/5 — Works great for me on the current ios 10.3.3 *2017-08-01* This is a very cool app. I'm a total novice, but this tool allows me to analyze sound. It's fun. I only wish there was an online tutorial to help me learn faster. This app rocks! ## Most critical reviews (10 lowest-rated) ### 1/5 — iOS update crashed the app *2020-11-27* No longer works with latest IOS 14 **Developer response:** Hi, sorry for the inconvenience. This is a known issue with iOS 14.2. Simply delete and reinstall the app and it should work. With any issues, please contact us at apps@onyx3.com ### 1/5 — Don’t buy *2018-09-08* Doesn’t work at all. Used to but they don’t know how to update something we pay for. If it’s not updated in the next day don’t bother downloading the app. I’ve used it for 2 years every weekend but they don’t know how to make it work for the new iOS. If they don’t update it like they should, they don’t care about “YOU” the consumer. **Developer response:** Hi, the app works fine with the latest iOS version. Please give it another try and contact with any questions. Thanks! ### 1/5 — Broken in OS10 *2017-05-18, version 1.9.1* The app no longer responds to any level of sound. ### 1/5 — Doesn't work with iOS 10 *2016-10-21, version 1.9.1* No longer works with iOS 10. Doesn't look like the app is being updated either given the last update is pretty old. ### 1/5 — Uh *2016-09-03* Blinked random, хаотично моргает экран ### 1/5 — Screen flicker *2016-06-30* Since an ios update the screen of my ipad strobes when i run this app. Shame because the app is the best of its kind otherwise. ### 1/5 — Still Broken *2016-02-14, version 1.9.1* Looks like this app is still not working! Screen flashes constantly while in use. Hope they fix it, since they got my money. ### 1/5 — Great concept but unusable *2015-12-13, version 1.9.1* This app looks promising but the screen just keeps flashing and you can't see anything. It needs an update to fix this bug, until then don't waste your money. ### 1/5 — DRUPOUTS!!! STILL NO UPDATES!!! 5 mounts. Guys PLEASE!!! *2014-12-11* Вылетает при переключении между программами, невозможно работать. Very good analyzer!! but... Dropouts!!! When working with mixer remote and switching between this analyzer and mixer remote program, analyzer didn't show up!!! Some times it does some times not, and it's not workable situation while working on life stage. It takes about 5-10 times to try to turn it on. I have ipad 5 air, iOS 7.0.2 during the 5 month no updates! ### 1/5 — Crash *2014-07-27, version 1.3* Crashes and won't start without a full shutdown on my iPad mini. ## Most praised reviews (10 highest-rated) ### 5/5 — Excellent and very useful. *2024-09-30* Now working perfectly with my iOS 18 iPhone and iPad. ### 5/5 — Profi App zum fairen Preis *2024-09-10* In hab die App auf meinen Pro Ipads nebst einem iphone und ipod laufen und kann sie schnell nutzen, um leise nervende Geräusche im Wasserfall aufzuspüren. Was mich echt überraschte war die 100HZ Linie bei echten Glühbirnen. Danke an die Entwickler:innen und top, dass ihr kein Abo-Modell habt. Weiter so! ### 5/5 — Wow, just wow. Doesn’t just work, it shines *2022-06-11* Full features and very responsive Octave RTA, which accepts both uncalibrated and calibrated microphones like iDSP ones. Has a full FFT plot as well. Spectrograph is really useful to identify sources of that annoying pitch you can hear among all the noise. Perfectly fluent user interface, simple yet fully functional. No delays, no glitches, the spectrum just comes alive on the screen. I can not describe how fluid the user interface feels - you just have to try. This is truly impressive! Check out their web site for a neat tutorial on how to EQ a room! ### 5/5 — Visually beautiful, and exactly what I expected technically *2021-10-04* Bought this to measure a high-frequency hum which disappeared when I bought the app. So thanks for that. Seriously, though, a very nice UI wrapper around the FFT. ### 5/5 — Best RTA on the App Store, PLEASE UPDATE! *2021-01-26* i’m very pleased by this Spectrum Analyzer; it is the only one that I’ve found that can run at full speed on an iPad Air 2! A+ To the devs; if you’re still updating this app, i’d appreciate a way to select other inputs on audio interfaces; I’d love the ability to monitor what’s coming into inputs 3+4. ### 5/5 — Absolute perfection *2021-01-12* I have used this app for many many years and made lots of money fixing sound issues. Also, the Spectrograph at max sensitivity can find any power whine to help regain your sanity. 10/10 ### 5/5 — Solving the app problem very fast *2020-12-11* The app did not work and I reported that. However afterward it has been fixed and reported very fast. So I gave the team 5 Stars not just for the good program but also for their fast response on solving the problem **Developer response:** Hi, Sorry for the inconvenience. This is a known issue with the latest iOS update. Simply delete and reinstall the app and it should work. With any issues, please contact us directly at apps@onyx3.com ### 5/5 — Cool App! *2020-11-27, version 1.9.5* Love this app, and the customer service is top notch 👍 ### 5/5 — New App *2020-03-26* Faber tried to rip me off by bricking my app with IOS 13 I refused to buy into their greed and purchased this app glad IO did it works really well Good App ### 5/5 — Fast and Easy *2019-12-01, version 1.9.5* Simple instructions, easy to use on my iPhone 6. Just make sure the mic port is not obstructed...or better yet, buy a Dayton Audio iMM-6 ref. mic from Amazon $15 becaus it has better low end response --- *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 2026-08-23.*