# Speaker Polarity — user reviews > 55 indexed App Store user reviews of Speaker Polarity by Andrew Smith, rated 3.60/5 from 18 ratings. - Source: https://appshunter.io/ios/app/speaker-polarity/id293263027/reviews - App overview in markdown: https://appshunter.io/ios/app/speaker-polarity/id293263027.md - Rating breakdown: 5★ 11 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 6 ## Newest reviews (11 of 55) ### 5/5 — Works well *2020-05-05, version 3.6* Exactly what I needed to troubleshoot speaker polarity and, by extension, phase for speaker pairs. Thank you. ### 4/5 — A miracle app! *2019-05-26* This app saves me a lot of trouble by telling me which of my car speakers was connected properly or not (without having to disassemble my radio in my dash). Thanks a lot! ### 4/5 — Great for any car audio install (Instructions in Review) *2019-04-27, version 3.4* Installed new speakers, head unit, and amplifier in my project truck. When using the factory wiring to connect to aftermarket speakers, it’s challenging to know the correct wiring schematic, even with a harness. After install I wanted to see if I did the wiring correctly... nope all speakers out of phase. This app gives a simple “-“ or “+” based on the phase of your speakers. I would have given 5 stars, but this app must of been created in an hour. It’s very poor with little to no instructions. What I did. Visit the app designers website on a Windows or OS computer and download their “Speaker Pop” audio file. From there I added the “long pop.wav” file into iTunes. I used my iPad as the music source (plugged in my iPad to the usb of my stereo), then used the app on my iPhone to read the sound from the speakers. The app used the microphone on your iPhone to read the signal. The microphone is located where the charger is (bottom of iPhone). Make the wire swap at the speaker, behind the head unit, or amp (my case, the amp under my seat) then test again. The test is only good for mid-speakers (door speakers), not tweeters (locates usually in the A-pillar or dash). ### 5/5 — Perfect!!! *2018-02-07* Just built a new audio system in my car and I was struggling with some weird polarity issues coming from the OEM head unit. I downloaded and burned the WAV file to CD and played it on repeat. And then one by one I could test each speaker simply by hold my phone near it. Brilliant! ### 3/5 — Needs Bluetooth *2017-10-05* Why cant you send the signal through Bluetooth that would be so easy to use when working on a car stereo ### 5/5 — Brilliant! *2017-01-16, version 3.0* I'm no audio expert but knew my newly supplied van speakers and wiring should have sounded a lot better, which got me looking into phasing and then this app. Worked perfectly for me and identified quickly that the left speaker wiring was supplied incorrectly so this was rectified and now sounds a lot better. 👍 ### 5/5 — Works as advertised! *2016-10-13, version 3.0* I recently hooked up surround speakers in a house that was pre wired for them. Unfortunately whoever wired it chose to use plain wire without any indication of positive or negative. I was strongly suspicious that my speakers were wired backward, and I found this app. Sure enough one of the surrounds was out of phase, and after fixing it they sound dramatically better! This is one of those apps that is well worth the 5 bucks. I'm very pleased. Thanks! ### 5/5 — What an AWESOME app! *2016-04-15* I installed an amp and upgraded speakers on my motorcycle. Took great effort to install everything according to my wiring diagrams. After it was all done my front speakers just didn't sound right. Same speakers as the rear but nowhere near the quality as the rear speakers. I took the bike apart to check my work. I did it right but using a multimeter I discovered that the original bike wiring was wrong. POS and NEG wires were backwards even though color coding and connectors were correct. Strange I know. I fixed it but something was nagging me about it. Was the factory wiring really wrong? Could it really be? Researching and double checking my thought process on what I discovered and "repaired", I came across this app. How simple could it be. 5 minutes after purchasing I verified that now my speakers are indeed wired correctly. All I can say is THANK YOU! I only wish I could have had this before I redid the wiring to show me it was audibly wrong at the time. Better late than never and the piece of mind is well worth the price of the app!!! ### 5/5 — Works Perfect! *2016-03-11* I installed new speakers in my car recently, and could tell something was just "off." I did some research on my own, and concluded it was most likely a polarity issue with the speakers. I didn't want to buy an expensive polarity testing device, so I looked through the App Store store and found this app. Trust me, it works. In less than 5 minutes, I installed the app, hooked up my phone to the car stereo, and tested all 4 car speakers individually. The test showed me 3 out of 4 speakers were connected properly with a positive polarity. I switched the wires for the one that came back negative, and re-tested it. Everything was positive and the music sounded full again. :-) To The Devs: Thanks for taking the time to make this stand-alone app, it really helped. ### 5/5 — BEST APP--EVER!!! *2016-02-02* THE BEST FIVE DOLLARS I EVER SPENT IN MY LIFE!!!! This is the best app I have ever used. Period. Something didn't sound right in my car stereo after upgrading the speakers, which required cutting the factory harnesses. It turns out the Crutchfield and other available schematics had the colors of + and - opposite to my car's factory wiring. It could be due to my car being a very limited run car (the only one I know of and that the dealers knew of). After spending a lot of money on a sound system, I didnt want to be in another $200 to buy a phase tester. THIS IS IT !! BEST 5 DOLLARS I EVER SPENT IN MY LIFE!!! If you have an iPhone and need a phase test tool this is it. ### 2/5 — Too hard to give instructions????????????????? *2015-12-17* I have it. I'm trying to figure how to us it. Would it be so hard to write STEP BY STEP INSTRUCTIONS telling how? like should i turn the signal output on or off? Like you say "select speaker type" Where would I do that?? How come you don't think about the user? It might be a good app, but you won't bother to explain usage. Is this digital, nonhuman, lack of understanding the other person's position ? Would it be so hard to present step by step instructions? Really! you put this up cause you enjoy this stuff but you also want to sell it, right??? So why be inconsiderate of the user? Yes, I'm p.o'd. I'm tired of gibberish. ## Most critical reviews (10 lowest-rated) ### 1/5 — Keeps crashing after update *2025-12-25* Please update again it keeps crashing now ### 1/5 — Crashes on opening *2025-12-23* App won’t even open. It flashes then crashes. No way to get my money back either, apparently. ### 1/5 — Lame *2025-05-21* Pretty much the worst $5 I’ve ever spent. Does not matter if I’m Bluetooth, wired CarPlay, wireless CarPlay. Tells me “low sample rate detected” and then reads no signal when I play the sound. I restarted the iPhone, restarted the uconnect, turned off all other apps and radios on my phone. Don’t bother with this junk if you are trying to figure out polarity on a 2025 wrangler. ### 1/5 — Didn’t work… *2024-02-10* Follower instructions, Bluetooth and wired. I tested it on car speakers, my TV and the speaker I bought from the store. Even the speaker that was intentionally crossed wired ### 1/5 — Non functioning *2023-01-22* Designed very poorly and doesn’t seem to work via blueooth or irony. Playing the sound manual had no effect. Broken app ### 1/5 — 내한테서 작동 안 된다 *2021-02-04* 환불 요청 ### 1/5 — Not Recommended *2020-05-01, version 3.6* Why sell an app with a setting easily set by mistake that makes it give wrong readings! And there’s no documentation for that mono/bal “feature” either😖. Buyer beware! This cost me hours of time. I would like my money back. ### 1/5 — Piece of crap *2020-03-26* Save your money !!! ### 1/5 — Crashing *2018-10-01* App is getting crash **Developer response:** Hello! Thanks for reporting this. Actually all you need to do is update to the latest release, v3.3. Then everything will work perfectly for you! Please update our stars once you can confirm this. Best, Andrew ### 1/5 — Terrible *2013-10-27, version 2.5* Unable to find sound file needed for this app - why not have it built into the app to use airplay ? Stick to a 9v battery ... ## Most praised reviews (10 highest-rated) ### 5/5 — EXCELLENT *2025-02-12* Worked for my Jeep , Found out my Jeep Grand Cherokee front 2 door speaker were wired backwards, and all 3 dash tweeters also 🤦🏽‍♂️, After only reversing the the 2 front door speakers the sound system sounds so much better. Once I receive my adapters from Crutchfield I will replace the Tweeters. FOR THOSE OF YOU WHO DONT LIKE TO READ INSTRUCTIONS,HOLDING YOUR CLOSE TO THE SPEAKER EITH TEST TONE PLAYING IF THE PHONE READS A NEGATIVE IT MEANS THAT SPEAKER US OUT OF PHASE/POLARITY. All speakers should read + and not - ### 5/5 — Chuchero testing *2025-01-22* Used this app after I found my channels for my chuchero setup and it was accurate on the phase when I switched it on my drivers, mids, and tweeters. ### 5/5 — Must have *2024-05-05* This app accurately identified the speakers out of phase. Bluetooth connected, turned on the test tone, held my phone in front of each of the speakers. ### 5/5 — Now my sound is great *2024-02-18* My speakers really sounded bad. Somehow flabby. The app showed different polarity, so I changed the polarity of one speaker. Afterwards the sound was as expected. Thank you for this nice and simple app! ### 5/5 — Best money spent on an app *2022-06-10* Works great with Bluetooth, (doesn’t work when Apple Car Play is running, but does with Bluetooth) Within 2 minutes I was done. Found out 3 speakers were backwards, literally the most useful app I’ve ever downloaded. ### 5/5 — Best $5 i’ve ever spent!!! *2021-05-04* Moved into new house with speakers built in everywhere to the ceilings and walls. No idea how the wires are connected, and i’m not about to go around removing each speaker from the wall and ceiling to see how they are attached (i tried one one, but they are very difficult to remove). I needed to know the correct polarity so that I could correctly calculate the impedance of various series and parallel circuits of speakers with the amp so i didn’t overload it (in addition to them having optimal sound). The builders of my house did not seem to follow any sort of convention or pattern when installing the speakers and connecting the wires, unfortunately. Using the app I was able to see that approximately 25% of my speakers were wired backwards and I simply matched this backwards wiring on my wall plate to ensure that I have the correct polarity everywhere. This app save me hours and hours and hours of difficult work and I will be forever grateful!!! ### 5/5 — Quick and easy *2021-02-05* I ran the WAV click file from their website through my stereo (using my iPad), then held my phone in front of each speaker to check polarity. 3 out of 4 of my speakers were negative, so I reversed the wires on those. Very quick and easy. ### 5/5 — Works like a charm *2020-12-18* I’m a perfectionist and wanted my home theatre setup to have proper polarity. The speaker wires run through the wall so it’s difficult to know if positive/negative are flipped along the signal path. Rather than pulling out the multimeter and finagling a way to determine what is what, this app makes it a total breeze. Contrary to what an older review states, you can pipe the sound through your iPhone’s Bluetooth. Luckily my stereo receiver is Bluetooth enabled. I didn’t even care to isolate each speaker—it worked perfectly without that step. Get the pop going, adjust the volume on your phone to ensure signal strength is in the correct range, and the app does the rest. I know it works because when I tested the port on my subwoofer, it changed from “+” to “-“ as you would expect. All in all well worth the $7 to save a headache. ### 5/5 — 汽车音响相位测试 *2020-11-16* 很实用！还没广告。。。 ### 5/5 — So simple with the right tools *2020-05-14, version 3.6* What a great app !! I have an amp with 2 speakers on each channel and I’ve been noticing a drop in bass. I assumed I’d blown a woofer (don’t lend your PA to friends !!) and was getting ready to replace it or maybe even get new speakers but had a nagging doubt that maybe I had wired the speakon connector incorrectly & therefore one speaker was out of phase. Downloaded the app and within 2 mins had diagnosed & confirmed my suspicion. Now they sound great !! Saved me money. P.S Best way would be to download on to 2 devices. One as source for the all important sample tone & the other as diagnostic tool. --- *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 2026-08-31.*