# Equalizer Fx: Bass Booster App — user reviews > 499 indexed App Store user reviews of Equalizer Fx by TwinBit Ltd, rated 4.20/5 from 27,913 ratings. - Source: https://appshunter.io/ios/app/equalizer-fx-bass-booster-app/id1084228340/reviews - App overview in markdown: https://appshunter.io/ios/app/equalizer-fx-bass-booster-app/id1084228340.md - Rating breakdown: 5★ 20,041 · 4★ 1,894 · 3★ 1,016 · 2★ 665 · 1★ 4,297 ## What do users think of Equalizer Fx? Overall sentiment: negative **Pros** - 🚀 Good sound quality - 👍 Customizable equalizer - 👍 Useful bass booster **Cons** - 🐛 Crashes and freezes - 🔒 Requires paid subscription to access features - 👎 Limited functionality without paid subscription - 👎 Doesn't work with Apple Music or other streaming services **Commonly reported bugs** - Equalizer and bass boost not working as expected - Subscription issues and inability to cancel - Compatibility problems with certain devices and iOS versions **Most requested features** - Add widget support - Allow importing and playing of personal music library - Improve stability and reliability ## Newest reviews (10 of 499) ### 3/5 — WTF *2026-07-08, version 4.8.3* I got a subscription for a equalizer boosters for my phone and all I got was music was don’t understand why you should look at their before they give ### 2/5 — Any app *2026-04-23, version 4.8.3* That doesn’t be upfront is bull wait till i use my data$$$ cost if u forget and then trap me into trial or pay up all the while not being upfront about charges and ads is not on today with the broken system. Plz be upfront or do we have to pay for halve assed not complete apps like gaming not good ppl ### 4/5 — Very difficult Ads sidestep *2026-04-14, version 4.8.3* Functional and rewarding; but stupid Ads are VERY DIFFICULT to close before getting down to listening and using Equalizer to optimize the SOUND. ### 1/5 — 課金したのにがっかり😞 *2026-03-29* 3000円のプラン購入して使い放題だと思ってたのにほとんどの曲が調整できないしイコライザーもそんなに細かく調整できないからこれに3,000円はおかしくない？😥 **Developer response:** ご期待に沿えず申し訳ございません。貴重なご意見をお寄せいただき、ありがとうございます。イコライザーは多くの楽曲に対応しておりますが、Appleのシステム制限により、デジタル著作権管理（DRM）で保護された楽曲には適用できないことをご了承ください。また、イコライザーのコントロール精度に関するご懸念も承知しており、アプリの改善に努める中で、いただいたご意見を開発チームと共有させていただきます。どの楽曲で調整できなかったのか、またどのようなイコライザーコントロールを期待されていたのかをお知らせいただければ、問題の理解を深め、改善に役立てることができま support@twinbit.netまでご連絡いただくか、アプリの設定画面にある「サポートに問い合わせる」または「問題を報告」セクションをご利用ください。 ### 5/5 — Equalizes my iTunes, plus more *2026-03-29, version 4.8.3* This does da job! Hard to find a free/good deal but this app has an equalizer that will play my iTunes songs on my iPhone 14, plus has 7-band equalizer, plus has my playlists, plus has shuffle and repeat. (Too much bass in my headphones, believe it or not! Now under control. I’m running iOS 26.3) ### 1/5 — They got me *2026-03-06, version 4.8.3* I have Apple Music but I have to purchase the music in order to use the app that cost me $19.99. Buyer be careful. ### 3/5 — App funktioniert nach Neuinstallation nicht mehr richtig *2026-03-02* Sehr geehrtes Support-Team, ich habe die App letzte Woche versehentlich gelöscht und anschließend erneut heruntergeladen. Seit der Neuinstallation funktioniert sie leider nicht mehr richtig. Sobald ich im Download-Bereich nur 2–3 Lieder gespeichert habe, wird die App extrem langsam, stürzt ab und es erscheint Werbung. Insgesamt funktioniert die App dadurch kaum noch zuverlässig. Ich bitte Sie um eine schnelle Lösung des Problems. Vielen Dank im Voraus. **Developer response:** Es tut uns leid, dass Sie nach der Neuinstallation der App Probleme haben. Falls Sie zuvor die Premium-Version erworben haben und Ihnen Werbung angezeigt wird, tippen Sie bitte auf „Kauf wiederherstellen“, um Ihren Premium-Status zu reaktivieren. Die Abstürze im Downloadbereich sind nicht zu erwarten. Bitte kontaktieren Sie uns unter support@twinbit.net und geben Sie Ihr Gerätemodell und Ihre iOS-Version an, damit wir der Sache nachgehen können. Sie können diese Informationen auch über „Support kontaktieren“ oder „Problem melden“ in den App-Einstellungen senden. Wir kümmern uns gerne um Ihr Anliegen und helfen Ihnen, eine Lösung zu finden. ### 1/5 — Porn Advertizing *2026-02-23, version 4.8.3* Had porn advertising first time I launched app. Never used features because it was quickly uninstalled. ### 4/5 — Good equalizer but full of bugs *2026-02-22, version 4.8.3* Best sound equalizer I ever seen but it’s playback controls are very annoying when pause/resume/seek music outside of the app. ### 1/5 — trash *2026-02-17, version 4.8.3* Not real eq ## Most critical reviews (10 lowest-rated) ### 1/5 — . *2026-08-05, version 4.8.3* Downloaded it and tried to use it anytime tried the app crashed ### 1/5 — Je ne comprends rien *2026-07-22* Je ne comprends rien de l’utilisation je sais pas comment mettre mes musiques sur l’application je peux pas mettre de musique ! **Developer response:** Nous sommes désolés d'apprendre votre mésaventure. L'application fonctionne avec les morceaux stockés directement sur votre appareil ou les titres que vous avez achetés et qui ne sont pas protégés par DRM. Pour utiliser l'égaliseur, assurez-vous que l'application est autorisée à accéder à vos fichiers multimédias et à Apple Music. Ensuite, lancez la lecture d'un morceau depuis votre bibliothèque, appuyez sur le titre en cours de lecture, et les options « Amplification des basses » et « Égaliseur » apparaîtront au centre de l'écran. Vous pouvez également consulter la FAQ dans l'application pour obtenir un guide pas à pas. Si vous avez besoin d'aide supplémentaire, veuillez nous contacter à l'adresse support@twinbit.net ou via les sections « Contacter l'assistance » ou « Signaler un problème » dans les paramètres de l'application. Nous sommes toujours ravis de vous aider. ### 1/5 — It sucks *2026-07-03, version 4.8.3* It was not immediately possible to determine whether the thing just do it ### 1/5 — Hi *2026-06-26, version 4.8.3* It seems that it doesn’t work 😡😡😡😡😡😡😡😡 ### 1/5 — Hunter *2026-06-23, version 4.8.3* Why do you have to pay for everything and why it doesn’t work ### 1/5 — Terrible *2026-06-20, version 4.8.3* Loading music is a joke ### 1/5 — Useless App *2026-06-09, version 4.8.3* This app is completely useless. I purchased it for approximately $20. I want my money back! I kept the app on my phone so I’d remember to review it and help others avoid the trap. ### 1/5 — Problem *2026-04-29* Sie ist nicht mit Spodify kompatibel **Developer response:** Wir entschuldigen uns für etwaige Verwirrung. Unsere App funktioniert mit lokal gespeicherten Audiodateien, da Streaming-Plattformen wie Spotify Einschränkungen haben, die verhindern, dass Drittanbieter-Apps direkt Equalizer-Effekte anwenden. Wir danken Ihnen für Ihr Verständnis. Bei Fragen oder falls Sie Hilfe benötigen, kontaktieren Sie uns bitte unter support@twinbit.net oder nutzen Sie die Bereiche „Support kontaktieren“ oder „Problem melden“ in den App-Einstellungen. ### 1/5 — Pay to get max bass boost *2026-04-05, version 4.8.3* Im disappointed with that you have to pay to get full bass boosted I don’t know this one. I was interested then it won’t let me use equaliser wouldn’t let me use the bass boost and I’m like now I hate this. Make a better one. Unplugged taster would be bad to parent than you. ### 1/5 — Misleading *2026-04-01, version 4.8.3* I wanted something for sound quality and this app is advertised as such but it’s just another streaming app so it’s wasteful to me ## Most praised reviews (10 highest-rated) ### 5/5 — Awesome *2026-08-09, version 4.8.3* This is a versatile app that is a dynamite equalizer for my iPhone. There are preset configurations for several genres and you can create your own to match your speakers or earphones. The only downside is how long it takes to load the music. A bargain at $10/yr. ### 5/5 — GOOD AP, BUT... *2026-08-05, version 4.8.3* ....Many Apple songs have a DMT lock so you cannot equalize them. It is not the apps fault, it's some legal copy right issue. So out of my entire song library of 500songs I can only tweak like 20. Sorry if I missed it but, I wish it would just say that right on the first page. I don't have the knowledge or resources necessary to unlock the DMT. VERY FUN and EASY TO USE THOUGH. My earbuds are $7 so I wasn't expecting a miracle. I'm after earth shattering bass bustin out of my buds while I walk down the street....met but didn't exceed my expectations, with better quality buds you'd probably be golden and not need anything. ### 5/5 — m wfffuzfzufufuf add water soapus *2026-07-22, version 4.8.3* Q ### 5/5 — It’s a is the best up a good night *2026-07-19, version 4.8.3* It is the best ### 5/5 — Bueno *2026-06-13, version 4.8.3* Buena ### 5/5 — Dope *2026-05-31, version 4.8.3* Cool App. ### 5/5 — Great *2026-05-05, version 4.8.3* I put a recorder in my husband's truck to see if he was cheating, and there was too much background noise. This app helped me fix the background noise and hear everything caught my husband cheated. Thank you equalizer ### 5/5 — Incredible *2026-04-11, version 4.8.3* Had to replace my Boom app that continuously crashed and Equalizer FX definitely is an upgrade as far as sound processing. I’m hard of hearing so the apps EQ band definitely tweaks the frequencies I can’t hear clearly. Great app!!! ### 5/5 — atur bas *2026-04-06, version 4.8.3* lagu ### 5/5 — Equalizes my iTunes, plus more *2026-04-02, version 4.8.3* This does da job! Hard to find a free/good deal but this app has an equalizer that will play my iTunes songs on my iPhone 14, plus has 7-band equalizer, plus has my playlists, plus has shuffle and repeat. [Heard back from developer. Looking forward to song skip BT controls coming to the app. Fingers crossed!] (Too much bass in my headphones, believe it or not! Now under control. I’m running iOS 26.3) --- *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 2026-08-30.*