---
title: "About Meso"
description: "Meso is a periodization engine with receipts: it builds real block-periodized strength programs and rebuilds them as you train, with every rule traced to peer-reviewed sports science."
canonical: "https://meso.fitness/about.html"
last-updated: "2026-09-10"
---

# About Meso

Meso is a periodization engine, with receipts. It builds real block-periodized strength programs and rebuilds them as you train — and every rule it enforces traces back to peer-reviewed sports-science literature.

## What Meso is

Most training apps are loggers: they record what you did and leave the hard part — deciding what to do — to you. Meso inverts that. The product is the programming: exercise selection, sequencing, load and RPE targets, phase structure, weekly per-muscle volume auditing, progression schemes, and mandatory deloads. Logging is the last step, not the point.

## Principles that shaped it

- **Evidence over opinion.** Volume landmarks, RPE-based autoregulation, deload timing, stretch-biased hypertrophy, and compound-first ordering all come from published research. If a rule surprises you, Meso shows you the paper.
- **A deliberately constrained LLM.** A language model selects and sequences exercises using your training context, but a rule-based validator audits every plan against framework constraints and retries until it passes. The model proposes; the framework disposes.
- **Individualization first.** Programs are built from your intake — goal, injury history, equipment, recovery, and frequency — not fitted to a fixed template.
- **Flexibility without losing the block.** Equipment modes, a bodyweight-only Travel Mode, and one-tap same-stimulus exercise swaps let real life happen while progression carries over.
- **One product, one price.** No tiers, no upsells: a cycle pass, one purchase per twelve-week training cycle, the same for everyone.

## Status

Meso is available now as a web app, with three free program generations (no time limit).

## Contact

- General: hello@meso.app
- Research / methodology questions: research@meso.app
- Security: security@meso.app
- Legal: legal@meso.app
- Instagram: https://www.instagram.com/meso.fitness.app/
- TikTok: https://www.tiktok.com/@meso.fitness.app