# BASS Hz! — Subwoofer & Amp Tuner

> Bass frequency generator and audio system stress tester. (iPhone/iPad app by KSelman.)

- Source: https://appshunter.io/ios/app/bass-hz/id497628873 (this page in markdown: same URL + `.md`)
- Developer: [KSelman](https://appshunter.io/developer/497168275)
- Category: Music, Utilities
- Price: $3.99 (on sale, was $4.99)
- Rating: 4.90/5 from 15 App Store ratings · 28 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 14 MB
- Languages: American English, German (Germany), Hindi, Indonesian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2012-02-01
- Data updated: 2026-09-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/bass-hz/id497628873/reviews.md

## What is BASS Hz!?

Built for car audio enthusiasts who tune by ear.

Test subs, amps, and enclosures with precise bass tones from 10–150 Hz, in the driveway, garage, or at home.

Dial in your sub. Find rattles. Set your gain right.

Generate clean bass tones from 10–150 Hz to test and tune car or home audio while using pure frequencies, not music. Built on Apple’s Core Audio engine for accurate, low-distortion tone generation.

Perfect for:
• Finding and fixing rattles and buzzes in your vehicle
• Setting amplifier gain and boost with precision
• Stress-testing subwoofers to find their best response
• Prepping and fine-tuning systems for audio competitions

Features:
• Bass tones from 10 Hz to 150 Hz
• Real-time frequency adjustment as you listen
• Five preset bass tracks included
• Noise Test mode
• Sweep Test mode (20 Hz–20,000 Hz)
• Fine-grained control for precise tuning

IMPORTANT — READ BEFORE USE
This app generates very low bass frequencies not typically found in music. Always start at low volume. Unmonitored use at high volume can damage speakers, subwoofers, and amplifiers. Know your system’s limits and monitor volume at all times.

## Key features

- Generate bass tones 4Hz-100Hz
- Real-time bass adjustment
- Noise test mode
- Sweep test mode 20Hz-20kHz
- Adjust frequencies in small increments

## Chart rankings

- #196 in Top Paid · Music (US App Store)

## Recent user reviews (10 of 28)

All indexed reviews: https://appshunter.io/ios/app/bass-hz/id497628873/reviews.md

### 4/5 — Nice app!

*2024-11-12*

Wish I could go above 100 hz to test front speakers cutoff. Would be easy feature to add.

### 5/5 — Updates after 10 years! Super!

*2022-11-12*

After 10 years this is still updated. It’s a bit specialised but good use case is testing out bass response for audio systems - even home audio. This does that it says and has a nice back to the future feel. Thanks Devs! Keep on updating!

### 1/5 — Don’t buy this Fake app not play any music as it’s saying on App Store

*2021-01-16*

Not working

### 5/5 — Found my rattle

*2019-06-17*

Got this to find a rattle in my system. Found it at about 70 Hz. It was the TV base on top of my sound base. This will be an easy fix with some buffer material. Great app.

### 5/5 — Excellent

*2018-02-15*

I always keep this app hand when setting up a new system. No lag, no frills.

### 5/5 — Does what it suppose to do

*2017-10-22*

This app is easy to use and at a fair price I don’t have anything negative to say about this app just it not for boosting bass on music it’s for adjusting your amps and for setting the gains on your amps more correctly this way you can avoid clipping

### 5/5 — Works

*2016-06-13*

No complaints. It works how its supposed to. Only buy this app if you have subs. Otherwise it wont be too useful

### 5/5 — The best subwoofer testing app... Period.

*2016-03-21*

Evidently some reviewers on here are not taking 10 seconds to read the app description...  This app is **ONLY** for testing subwoofer systems in vehicles, etc.  And it does an amazing job of that. Has 12 different preset test frequencies, beginning at 20 Hz, the user can select with the press of a button...even has a slider so you can adjust the frequency down or up a little.  Perfect for testing and finding the weak spots in your subwoofer system, so you can adjust and improve your car audio system's bass performance.

### 5/5 — This is an app to test with

*2015-08-10*

This doesn't add bass to songs. It's just here for people to test speakers and subs. What did you expect

### 1/5 — Crap

*2015-01-23, version 1.6*

See 1st review

## Frequently asked questions about BASS Hz!

### What does BASS Hz! do?

BASS Hz! is an application designed to generate and test bass frequencies for audio systems. It allows users to produce clean bass tones as low as 4Hz to tune and stress test subwoofers in car or home audio setups.

### What are the key features of BASS Hz!?

Key features include generating bass tones between 4Hz and 100Hz, real-time bass adjustment, a noise test mode, and a sweep test mode covering 20Hz to 20000Hz. Frequencies can be adjusted in small increments for precise tuning.

### Is BASS Hz! free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, indicating a completely free experience for users.

### What kind of audio systems can I test with BASS Hz!?

This app is suitable for testing and tuning both auto (car) audio systems and home audio systems. It is particularly useful for stress testing subwoofers to determine their optimal bass frequency response.

### How should I use BASS Hz! safely?

It is crucial to start with your volume turned down and be aware of your system's capabilities before using the app. The app can produce very low bass frequencies that may not be present in music and could potentially damage equipment if not monitored carefully.

## Version history (last 5 releases)

### 4.3 — 2026-08-27

Bug fixes and stability improvements.

### 4.2 — 2026-08-11

- Updated user interface
- New audio tracks

### 4.1 — 2025-08-22

Bug fixes and stability improvements.

### 4.0 — 2023-06-26

Updated user interface, added language localizations and compatibility updates for the latest iOS version.

### 3.1 — 2022-11-12

Bugs fixes and stability improvements

## Apps similar to BASS Hz!

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Bass Booster - Audio Equalizer](https://appshunter.io/ios/app/bass-booster-audio-equalizer/id1471431235) | 4.3 (4,709) | Free | Music |
| [Equalizer & Bass Booster FX](https://appshunter.io/ios/app/equalizer-and-bass-booster-fx/id1579669513) | 4.6 (3,121) | Free | Music |
| [Bass Booster Music EQ: BASSY](https://appshunter.io/ios/app/bass-booster-music-eq-bassy/id6444477459) | 4.6 (4,684) | Free | Music |
| [Amplify Sound: Bass Booster](https://appshunter.io/ios/app/amplify-sound-bass-booster/id6450162695) | 4.6 (286) | Free | Music |
| [Bass Booster & EQ Amplifier](https://appshunter.io/ios/app/bass-booster-and-eq-amplifier/id1445173813) | 4.0 (3,170) | Free | Music |
| [Bass Tester & Booster Pro](https://appshunter.io/ios/app/bass-tester-and-booster-pro/id941024213) | 3.9 (225) | Free | Music |

## More apps by KSelman

- [noshr - Restaurants Near Me!](https://appshunter.io/ios/app/noshr-restaurants-near-me/id995875345)
- [Bar Hopper - Night Clubs Near Me FREE](https://appshunter.io/ios/app/bar-hopper-night-clubs-near-me-free/id1092405351)

All apps by KSelman: https://appshunter.io/developer/497168275

## Related topics

[subwoofer bass tester tool](https://appshunter.io/ios/topics/subwoofer-bass-tester-tool) · [subwoofer bass tester](https://appshunter.io/ios/topics/subwoofer-bass-tester) · [bass test](https://appshunter.io/ios/topics/bass-test) · [bass tester](https://appshunter.io/ios/topics/bass-tester) · [subwoofer test tone](https://appshunter.io/ios/topics/subwoofer-test-tone)

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*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 2026-09-01.*