Software Alternatives, Accelerators & Startups

Equalizer APO VS ForthWrite

Compare Equalizer APO VS ForthWrite and see what are their differences

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Equalizer APO logo Equalizer APO

A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 with channel remapping/copying capabilities

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.
  • Equalizer APO Landing page
    Landing page //
    2023-04-30
  • 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.

Equalizer APO

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

ForthWrite

$ Details
freemium $12 / 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

Equalizer APO features and specs

  • Highly Customizable
    Equalizer APO offers a high level of customization, including support for multiple channels, various filters, and virtually unlimited number of filters. This allows for precise audio control and personalization.
  • Open Source and Free
    Being open-source and free, Equalizer APO provides a cost-effective solution for users needing an audio equalizer without the need for a commercial license.
  • Low System Resource Usage
    Equalizer APO is designed for low-latency processing and minimal CPU usage, making it suitable for running on a variety of system configurations without impacting system performance.
  • Wide Compatibility
    It is compatible with all major Windows versions, and supports various audio formats and devices, making it a versatile choice for many users.
  • Integration with VST Plugins
    The software supports integration with VST plugins, enabling advanced audio tuning and additional sound effects.

Possible disadvantages of Equalizer APO

  • Complex Setup
    The initial setup and configuration can be complex for users who are not familiar with audio processing or equalizers. There is a steeper learning curve compared to some other audio equalizers.
  • No Native GUI
    Equalizer APO does not come with a native graphical user interface (GUI) by default. Users may need to use third-party software like Peace Equalizer for a more user-friendly interface.
  • Windows Only
    It is only available for Windows platforms, which limits its usage for those using other operating systems such as macOS or Linux.
  • Potential Compatibility Issues
    There can be compatibility issues with certain sound cards and audio drivers, which may require additional tweaking or may not work at all.
  • Limited Support and Documentation
    While there is a community around Equalizer APO, the official support and documentation can be lacking, making troubleshooting and advanced configuration challenging without sufficient technical knowledge.

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 Equalizer APO

Overall verdict

  • Yes, Equalizer APO is a good choice for audio equalization on Windows platforms. Its comprehensive feature set, combined with community support and flexibility, makes it a reliable option for users seeking to enhance their audio experience.

Why this product is good

  • Equalizer APO is considered a good tool because it is a powerful and customizable audio equalizer that allows users to enhance audio quality on Windows systems. Its open-source nature makes it freely available and continuously supported by a community of users and developers. It provides a wide range of audio filters and allows for real-time audio processing with little to no latency, making it suitable for both casual and professional use.

Recommended for

  • Audio enthusiasts who want to personalize their audio experience.
  • Gamers looking to optimize sound settings for better immersion.
  • Musicians and audio professionals needing precise audio adjustments.
  • Users requiring a lightweight and non-intrusive equalizer tool.

Analysis of ForthWrite

Overall verdict

  • I don't have verified information about a product called ForthWrite (forthwrite.ai). I cannot confirm its features, quality, or reputation, so I'm unable to provide an accurate assessment of whether it's good.

Why this product is good

  • No reliable data available on this specific product in my knowledge base
  • This may be a newer product, a niche tool, or possibly a fictional/hypothetical name
  • Providing details without verified information could result in inaccurate or fabricated claims

Recommended for

  • Unable to determine without verified product information
  • Consider checking the official website, user reviews on platforms like G2 or Trustpilot, and independent tech review sites for accurate details

Equalizer APO videos

Equalizer APO Overview/Tutorial Feat. Boosting a USB Microphone

More videos:

  • Review - Equalizer APO Preamp and Effects

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Equalizer APO and ForthWrite)
Audio & Music
100 100%
0% 0
Email
0 0%
100% 100
Audio
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Equalizer APO 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 Equalizer APO 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 Equalizer APO and ForthWrite

Equalizer APO Reviews

Best FxSound Enhancer Alternatives (2023)
Microsoft Windows users can use Equalizer APO, a free graphic equalizer. You may get Jonas Thederingโ€™s Equalizer APO for nothing. Equalizer APO is highly user-friendly and offers a ton of great features. You donโ€™t need to worry about how much CPU is being used because Equalizer APO is very small and consumes very little system resources. This site has nothing to do with the...
Top 8 Alternatives to Soundpimp โ€“ Elevate Your Audio Experience
Equalizer APO is a free open-source audio enhancement software for Windows operating system. It offers a graphical user interface for adjusting the audio EQ settings, along with advanced features such as room correction and channel routing. Equalizer APO supports various audio formats and works with most audio players.
Top 11 Best Free Audio Sound Equalizer For Windows 10
The first program on our list of the best audio equalizer for Windows 10 and other OS is the Equalizer APO. What brought Equalizer APO to the top of our list is that the program is compatible with multiple channels. Youโ€™ll get more information about the product from the features, pros, and cons provided below.
11 Best Free Audio Sound Equalizer For Windows 10 In 2021
Loaded with several customization options, Equalizer APO is our first pick in the category of audio equalizer tool for windows 10. It operates as an Audio Processing Object.
8 Best Audio Sound Equalizers for Windows 10
Equalizer APO is a parametric/graphic equalizer for Windows. It is implemented as an Audio Processing Object (APO) for the system effect infrastructure introduced with Windows Vista. Itโ€™s our first Open Source entry. The strong footprint in the community makes it the best and easiest choice. The UI may seem too plain and all the options can overwhelm a new user, but you can...

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, Equalizer APO seems to be more popular. It has been mentiond 264 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.

Equalizer APO mentions (264)

  • GPD Pocket 4 Speaker DSP: Configuring PipeWire so laptop speakers sound better
    Under windows https://sourceforge.net/projects/equalizerapo/ >Equalizer APO can be used in conjunction with Room EQ Wizard (http://www.roomeqwizard.com/), because it can read its filter text file format. - Source: Hacker News / over 1 year ago
  • Capitalize on your PC audio setup
    Equalizer APO- https://sourceforge.net/projects/equalizerapo/. Source: almost 3 years ago
  • Microphone EXTREMELY quiet on new pc only.
    Https://sourceforge.net/projects/equalizerapo/ download this, open editor app, click ur mic, turn up knob top left. Source: about 3 years ago
  • Accessibility help: reduce volume of high frequency
    Have a look at https://sourceforge.net/projects/equalizerapo/ and its interface https://sourceforge.net/p/peace-equalizer-apo-extension/wiki/Home/. Source: about 3 years ago
  • Is there a way to change ALL computer audio (on Windows 11 Home Edition) to reduce bass tones, increase treble, et cetera?
    Equalizer APO with the Peace interface. Equalizer APO has to be installed first. Source: about 3 years ago
View more

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 Equalizer APO and ForthWrite, you can also consider the following products

Peace Equalizer - Download Peace Equalizer, interface Equalizer APO for free.

ReclaimAI - Helps users prioritize their work and personal calendars

Hesuvi - Hesuvi imitates the binaural sound effect of many surround virtualizations by making use of...

Superhuman - Superhuman is an email management tool.

FxSound - Clearer Sound for Your PC. The new FxSound boosts your sound quality, volume, clarity and bass.

Shortwave - Email smarter & faster with a reinvented experience for your Gmail