Apps, AI tools, and technology by Devin Tassin

Building simple, powerful software for real people.

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Projects

A growing collection of apps and tools focused on real-world use, not buzzwords.

MesoBuilder

A training app for lifters and coaches that makes it easy to build mesocycles, log every set, and get automatic progression suggestions week to week.

  • Separate workflows for lifters and coaches
  • Progressive overload suggestions based on performance
  • Clean, affordable alternative to spreadsheet tracking
Visit mesobuilder.app →
MesoBuilder app dashboard preview

AI Tools & Experiments

Experiments with local and cloud AI models, focused on practical automation, security workflows, and developer tools.

Local LLM Lab

Running models locally on macOS and dedicated hardware to explore coding assistance, security tooling, and offline workflows.

Security & Automation

Prototyping tools that help with recon, lab work, and everyday automation while keeping the human fully in control.

Upcoming Projects

I'm always working on something new. Here is a sneak peek at what is currently in development.

BridgeWatch

A dedicated utility for monitoring real-time status updates for critical infrastructure, designed to help commuters plan ahead.

About Tassin.Tech

An independent studio building practical tools. Tassin.Tech explores where fitness, security, and everyday tech all overlap.

I build things I actually want to use: training tools that make sense in the gym, simple websites that are easy to maintain, and AI-powered utilities that save time without adding clutter.

Most projects start as something small I need in my own life and grow from there. If it isn’t practical, opinionated, and honest about what it can and can’t do, I’m not interested.

Contact

Questions, ideas, or feedback about MesoBuilder or anything else? Reach out.

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