TETSU
AI gym & diet coach

Every rep. Every meal. Every day.

Tetsu plans your training week with AI, logs meals in one tap with USDA-grade facts, and turns showing up into progress you can see: photos, PRs, streaks.

On the App Store & Google Play · Free to start · No ads, ever

Tetsu Today screen: daily streak, scoreboard and routine timeline
Today
1,289animated exercises
296meals, full facts
100achievements
0ads, ever
Screens

The real app, not mockups

Straight from the shipping build.

Sensei AI coach proposing a push day workout with a one tap save card
01Sensei AI
Active workout screen with sets prefilled from the last session
02Workout
Nutrition day view with macro totals
03Nutrition
Daily routine timeline: wake, workout, meals, water and sleep with targets
04Routines
Body screen with readiness, weight and progress photos
05Body
Weight trend chart
06Weight
Workout templates and history
07Templates
Achievement badges earned by lifting and logging
08Achievements
Exercise library with animated demonstrations
09Library
Tetsu Pro subscription screen
10Pro
What it does

One app for the whole discipline

  1. AI week planning

    Describe how you want to train and eat. Tetsu drafts your week: workouts matched to your equipment, meals that hit your macros. You approve every slot.

  2. 1,289-exercise library

    Every movement with an animated demonstration and step-by-step form cues, searchable by muscle and equipment.

  3. Meal logging

    One-tap logging with USDA-grade nutrition facts, or describe any meal in plain English and let AI parse the macros.

  4. Progress photos

    Private progress photos with side-by-side comparison, so the mirror finally has receipts.

  5. Streaks & achievements

    A daily streak and 100 achievements, from your first PR to a full year of showing up.

  6. PR detection

    Personal records spotted automatically across every rep range, the moment you log the set.

  7. Machine scanner

    Photograph any gym machine mid-workout: Tetsu identifies it, matches the exercise, and adds it to your session. Unknown machine? AI drafts it as a custom exercise on the spot.

  8. Photo meal logging

    Point the camera at your plate and log the whole meal in one tap: AI reads the portions and grounds the numbers in USDA reference data.

  9. Works with Claude & ChatGPT

    Connect your AI assistant and manage workouts, meal plans and routines by chat. Tetsu speaks MCP.

Pricing

Free forever. Pro when you're ready.

Logging never goes behind a paywall. Pro raises the ceilings and unlocks the deeper analysis.

What's included
FeatureFreePro
Workout & meal loggingUnlimitedUnlimited
Exercise library & form guidesFullFull
Workout templates3Unlimited
AI requests3 / day100 / day
Advanced analyticsIncluded
Progress photo comparisonIncluded

Pro is $9.99/month or $59.99/year, and every subscription starts with a 7-day free trial.

Library

Start browsing without the app

The full exercise and meal libraries are on this site: every page free to read, every entry one tap to track.