Software Alternatives, Accelerators & Startups

AudioBus VS ForthWrite

Compare AudioBus VS ForthWrite and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

AudioBus logo AudioBus

With Audiobus, the revolutionary new inter-app audio routing system, you can connect your...

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
Visit Website
  • AudioBus Landing page
    Landing page //
    2021-10-06
  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.

How it works

ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.

Key features

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

Who uses it

Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.

Pricing

Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.

AudioBus

Website
audiob.us
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

ForthWrite

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

AudioBus features and specs

  • App Integration
    AudioBus allows seamless integration between different audio apps, enabling users to create music by sending audio and MIDI between apps in real time.
  • Easy Routing
    The platform provides an intuitive interface for routing audio and MIDI signals, making it easier for users to connect applications and devices.
  • Versatile Use
    AudioBus supports various music apps and instruments, allowing it to be used for a wide range of musical styles and projects.
  • Live Performance
    Musicians can use AudioBus for live performance setups, taking advantage of its ability to handle multiple audio streams simultaneously.

Possible disadvantages of AudioBus

  • Complexity for Beginners
    The flexibility and range of features can be overwhelming for beginners who are not familiar with audio routing and digital music production.
  • Resource Intensive
    Running multiple apps through AudioBus can be resource-intensive, potentially leading to increased CPU and battery usage on mobile devices.
  • Platform Limitation
    Currently available only on iOS, which limits its accessibility to users who are on other platforms like Android or desktop.
  • App Compatibility
    While many apps are supported, some popular music apps might not be fully compatible with AudioBus, restricting its use cases.

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

Analysis of AudioBus

Overall verdict

  • Yes, AudioBus is considered a good tool, particularly for individuals looking to enhance their mobile music production capabilities. Its ability to link and manage multiple apps in one cohesive environment makes it invaluable for iOS-based music creation.

Why this product is good

  • AudioBus is quite popular among musicians and audio enthusiasts for its ability to seamlessly connect different music apps on iOS devices. It allows for real-time audio routing between various music apps, facilitating a more integrated and creative workflow. Users appreciate its user-friendly interface and robust performance, which make complex audio routing tasks manageable even for beginners.

Recommended for

  • iOS musicians
  • Mobile music producers
  • Live performers using iPads or iPhones
  • Podcasters
  • Audio developers testing app integrations

AudioBus videos

Audiobus 3 Overview

More videos:

  • Demo - Audiobus 3 and Midiflow Setting up and Geting Started Demo for the iPad
  • Review - Audiobus | REVIEW

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to AudioBus and ForthWrite)
Audio & Music
100 100%
0% 0
Writing Tools
0 0%
100% 100
Audio
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing AudioBus and ForthWrite.

Which are the primary technologies used for building your product?

ForthWrite's answer:

Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API

What makes your product unique?

ForthWrite's answer:

ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.

Why should a person choose your product over its competitors?

ForthWrite's answer:

Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.

How would you describe the primary audience of your product?

ForthWrite's answer:

Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.

What's the story behind your product?

ForthWrite's answer:

Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.

User comments

Share your experience with using AudioBus and ForthWrite. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare AudioBus and ForthWrite

AudioBus Reviews

Blackhole by ExistentialAudio
With Audiobus, the revolutionary new inter-app audio routing system, you can connect your Audiobus-compatible music apps just like virtual cables.

ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.

    The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.

    What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.

    The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.

    Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.

    ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.

    Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

Social recommendations and mentions

Based on our record, AudioBus seems to be more popular. It has been mentiond 4 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

AudioBus mentions (4)

  • Hmm... does this sound like a good reason to switch to Bitwig?
    I'm starting to think you're trolling because that's just from the first four results of a google search without even delving down the reddit , image-line forums, audiob.us discussions and ableton discussions that these initial articles led me down. No idea where you got the idea that ableton sucks for recording. Everything about ableton's audio management is awesome. Source: over 3 years ago
  • Another Newbie Question - IPhone or Android?
    iPad, by far. Get yourself https://audiob.us/ and Korg Gadget and you'll have it all singing and dancing together quickly. Source: about 4 years ago
  • Loopy Pro โ€“ the future of live looping
    Loopy is pretty cool. The dude who wrote it (Michael Tyson) is also behind https://audiob.us/ and https://theamazingaudioengine.com/ and was really early and influential to the iOS audio scene. Definitely worth checking out. - Source: Hacker News / over 4 years ago
  • Unifying iPadOS and macOS
    > the ability to create(!) and combine small specialized tools into something that's bigger than the sum of its parts Funny, the possibility to do that currently exists in a walled garden, for audio apps: https://audiob.us The problem was never was the current OSs, it was just about app makers not willing or not knowing how to collaborate amongst themselves. It was also never about open vs closed, since... - Source: Hacker News / almost 5 years ago

ForthWrite mentions (0)

We have not tracked any mentions of ForthWrite yet. Tracking of ForthWrite recommendations started around Jun 2026.

What are some alternatives?

When comparing AudioBus and ForthWrite, you can also consider the following products

Loopback by RogueAmoeba - Get all the power of a high-end studio mixing board, right inside your Mac!

Superhuman - Superhuman is an email management tool.

Go Button - Go Button is a mobile audio app designed to provide professional playback of music and sound effects for live shows. It provides a creative, self-contained show control system that runs on your iPad, iPhone, or iPod touch.

Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.

LiveTrax - LiveTrax is an app by MasterMedia Productions through which musicians can control the playback of their favorite track during live performances by using simple controls.

Lavender - Realtime coaching for sales emails.