TB Lowtone

TB Lowtone

Bass synthesizer

14 ratings
10 reviews
$9.99

Details

  • Released
  • Updated
  • June 23, 2023
  • May 28, 2026
TB Lowtone screenshot #1 for iPhone
TB Lowtone screenshot #2 for iPhone
iphone
ipad
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About

This app is an innovative bass synthesizer and AUv3 plugin that uses loudness-domain harmonic synthesis for deeper, more consistent bass sounds. It features multiple oscillators, modulation options, and built-in effects, plus an AI randomizer for creating new patches.

Loudness-domain harmonic synthesis
3 analog-simulated oscillators
Voltage-controlled noise synthesizer
AI randomizer for patch generation
Extended LFOs and ADSR envelope
Pro quality effects (reverb, chorus, delay)
AUv3 plugin support
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What's New in TB Lowtone

1.2.8

May 28, 2026

This update provides significant workflow, customisation, personalisation and performance improvements: - New MIDI learn function - Improved detection of drag vs click/tap logic for UI elements - Fix an issue with manual entry of automation lane values in certain hosts - New option to enable highlighting of UI elements that accept keyboard input - New option to customize color scheme - Improved undo/redo functionality

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Charts

Top Paid

📉 198-25

Music

This app dropped -25 positions in Music chart.

Last updated on July 21, 2026.

User reviews

Ever get fixed

Never stops running on back ground flow n lowtones have them on android really need here but has to delete never stopped running even when I rest n all ate up 1k hours in background just added up everyday not even using them run all night plugged in crazy?? Has it been fixed to show up in no background refresh yet both of em please how can apps even do that
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Great on android

Has got way better or I learned some tricks lol tyty

Great on android

Since they day I bought on iPhone we’re I more need them they run when the want and all night long every night even tried low battery mode last night with all app background refresh off always is Flowtones and low tones no place to be found? So they do as they please going to ruins my battery even if I don’t open them? Any help please
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Not showing up in App Lists runs 24/7

Been running all day last 11 plus hours on background these apps need to be able to be on the list to not run in background on iOS why? I love low and flow tones I’m in witch’s but dang why? Edit working better today we’ll see if I’m ever charged up n leave it in plugged it never does that but clearly the two apps will. Oops spoke to soon been running two hours in background while off lol App is great would of got 5 stars from android to here but on iPhone it and Flowtones just ran all night and killed my battery why? And why do they not show up with all other apps to turn off app background refresh??? It’s like they don’t even exist on my phone but they work 5 stars on android has a bug or sum in them here I guess I’ll have to run phone in low battery mode to kill background but two days n a row and I know for sure now same two apps that don’t pop up in app refresh to turn it off showed tan all night and ate my battery up. Sad I love the apps couldn’t wait to get them here smh
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Great sound design depth, but needs a collapsible keyboard

TB Lowtone is a fantastic-sounding synth with a smooth interface and tons of modulation options, but on iPad the fixed on-screen keyboard takes up too much space. It would be great to have a “hide keyboard” toggle so the main panel can expand fully, especially when using an external MIDI controller or hosting it inside another app. A simple UI control for that would make Lowtone feel far less cramped and even more enjoyable to tweak.
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Developer apps

FAQ

What makes TB Lowtone's synthesis unique?

TB Lowtone utilizes loudness-domain harmonic synthesis, a world-first for bass synthesizers. This approach compensates for loudness deviations across frequencies, resulting in more consistent and production-ready bass sounds compared to traditional amplitude-domain synthesizers.

How does the AI randomizer in TB Lowtone work?

The AI randomizer in TB Lowtone generates new patches with a single click. It learns from your existing patches to create personalized and novel sound designs, offering a creative boost for users.

What are the system requirements for TB Lowtone's AUv3 functionality?

To use TB Lowtone as an Audio Unit (AUv3) extension, you will need an iPad mini 2, iPad 4, or a later model. Licenses acquired for this platform are not compatible with other platforms.

What kind of modulation capabilities does TB Lowtone offer?

TB Lowtone provides two extended low-frequency oscillators (X-LFOs) with various waveforms, a conventional ADSR envelope, and a gate editor for parameter modulation. These tools allow for complex and dynamic sound shaping.

Does TB Lowtone include built-in effects?

Yes, TB Lowtone comes equipped with professional-quality effects including reverb, chorus, and delay. It also features a high-quality peak limiter to help produce polished, production-ready sounds.

How often is TB Lowtone updated?

TB Lowtone was last updated on September 29, 2025, with version 1.2.7. This indicates a recent update, suggesting ongoing development and support for the application.

What is the price of TB Lowtone?

TB Lowtone is available for a one-time purchase of $9.99. This price grants you access to all the features of the app.

What devices is TB Lowtone compatible with?

TB Lowtone is compatible with iPhone, iPad, and iPod devices. It is designed for iOS and offers a resizable UI for different screen sizes.