Hey,

You signed up for updates on Neuralingual. This is the first one, and it's the one that matters: the app is live on the App Store.

I'm Dave. I've been building Neuralingual for the better part of a year, and I want to tell you what it is, why I built it, and what's coming.

What it is

Neuralingual is an AI-powered affirmation app. You type what you're working on, a goal, a worry, a skill, and it composes a spoken affirmation practice grounded in real researchers and frameworks. Not generic quotes. Your words, your situation, rendered as audio you can listen to anywhere.

Why I built it

I started using affirmations in the 1980s. Literally a cassette tape player with press-down buttons, playing in my car with the windows up, hoping nobody at the stoplight could hear it.

The practice stuck. So when I started building with AI over the last few years, this was one of the things I wanted to build. The tool I'd been wishing existed for forty years.

What's under the hood

The feature set goes deeper than you'd expect from an affirmation app:

• 80+ AI voices across four providers
• 60+ background audio tracks (ambient, nature, lo-fi, rain, ocean, and more)
• Binaural beats (alpha, theta, delta frequencies)
• Three tonal registers: grounded, open, mystical. The same affirmation hits differently depending on how it's spoken.
• 8 session contexts (sleep, meditation, workout, walk, focus, pre-competition) that shape pacing and energy
• Full control over duration, pace, shuffle, favorites
• A full API, CLI, and MCP server. Your AI assistant can create affirmation playlists, manage voices, and trigger audio renders. If you use Claude Code, ChatGPT, or any tool that speaks MCP, Neuralingual plugs right in.

The AI doesn't pull from a database of generic phrases. It draws on real researchers: Burns, Kabat-Zinn, Bandura, Seligman, Dweck, Rotella, Neff, and hundreds more. Each affirmation is grounded in actual work by actual people, with a practice guide explaining why each one was chosen for your specific intent.

Does it work?

There's real science behind affirmation practice. Self-affirmation measurably reduces cortisol under stress (Creswell et al., 2005). A 2025 meta-analysis across 67 studies and 17,700 participants found consistent effects on well-being and self-perception. The mechanism is attentional: affirmations direct your brain's filter toward what matters to you.

I'm not making clinical claims. The research gave me confidence that building this wasn't crazy. I've been using it daily for months. It works for me. I genuinely don't know yet if it works for everyone. That's what I'm trying to find out.

How I built it

Neuralingual is the first product from Inner Stack Labs, an AI-native company I founded. Claude Code, Codex, and Gemini CLI as the primary development environment. AI agents across engineering, marketing, and operations. More than 2,000 PRs merged. Bootstrapped with about the same amount of investment as a business trip.

I'll be sharing more about all of this: the science behind affirmations, specific use cases (golf, pickleball, confidence, sleep, stress), what building an AI-native product actually looks like, and what I'm learning along the way.

If you want to try it: Neuralingual on the App Store

More next week.

Dave