The only coach that ties your lifting and your eating together
So every session pushes your gains forward. AI custom builds from your training and nutrition data.
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AI coach that knows you
A chat coach that reads your real training history, gym programs, and bodyweight, so the advice fits you.
Smart logging & progression
Log gym sessions in seconds. Structured workout programs and strength goals drive automatic weight and rep suggestions every session.
Nutrition tracking
Scan barcodes, log meals, and hit macro targets. Run bulk, cut, maintenance, or recomp diet phases with clear goals.
Bodyweight & analytics
Track bodyweight, training volume, and strength trends over time, plus a monthly AI progress report that ties it all together.
Built on the science
Coaching grounded in proven, science-based strength-training principles, not hype, fads, or generic advice.
Private by design
Your data stays yours. Export everything or delete your account at any time, with full GDPR control.
Programs that plan your next workout
Build a gym program once: choose your split, curate the exercises for each workout type, and mark your deload weeks. After that, CrestAI plans every session for you.
- Double progression, automatic: hit the top of your rep range on every set and the weight goes up; until then, add reps.
- Every weight and rep is computed from your real logged history.
- Prefer to freestyle? Start any workout from scratch and log it your way.
Log workout
Push · Wed 15 Jul
Double progression from your last Push session.
Nutrition tracking built for lifters
Log what you eat by scanning a barcode, searching the food database, or entering macros by hand. CrestAI totals your calories and protein, carbs, and fat for the day against your targets.
- Run a diet program (bulk, cut, maintenance, or recomp) with its own calorie and macro goals over a date range. Your daily targets follow it automatically.
- Save reusable meal templates so logging your regulars is one tap.
- Skipped a day? Mark it, and it's excluded from your averages instead of counting as zero.
148g / 160g
Protein
190g / 210g
Carbs
52g / 60g
Fat
An AI coach that reads your actual data
The coach chat can see your training history, programs, nutrition, and bodyweight, so its answers are about you. Discuss training strategies and find your optimal approach with an AI coach built on relevant scientific research.
- Analyze your progress and spot plateaus across any exercise or timeframe.
- Get your next workout suggested on demand, from the same double-progression engine, in chat.
- Log meals by describing them, and ask how to train a specific exercise or muscle.
Add to Dinner
2026-07-15
Grilled Chicken Breast
200 g
330 kcal · P 62g · C 0g · F 7g
Source: Based on my coaching knowledge
Jasmine Rice, cooked
150 g
195 kcal · P 4g · C 42g · F 0g
Source: Based on my coaching knowledge
Total
525 kcal · P 66g · C 42g · F 7g
How it works
Log & plan
Log your meals and build your gym and strength training programs.
AI plans
The AI builds your next session from your nutrition and training program, adding in progression.
Track your progress
Watch strength, bodyweight, and nutrition trends build over time.
Frequently asked questions
CrestAI is a gym training journal and AI coach. It combines workout logging, nutrition tracking, and science-based strength coaching in one web app, so you can log meals, build gym and workout programs, and get AI-generated gym sessions from your real training history.
The AI reads your real training history, workout programs, nutrition, and bodyweight to build your next gym session and answer training questions. Its recommendations are grounded in proven, science-based strength-training principles, not generic advice.
Double progression is a simple, proven way to build strength: you train within a rep range (say 3 sets of 6–10). When you hit the top of that range on every set, you add weight and drop back to the bottom of the range; until then, you add reps. CrestAI applies it automatically from your logged history, so each session's targets are set for you.
Gym workouts and strength progression, nutrition and macros (including barcode scanning), bodyweight over time, and a monthly AI progress report that ties it all together.
Yes. Your data is yours. You can export everything or delete your account at any time, with full GDPR control.
CrestAI is a web app that installs to your phone's home screen as a PWA, no app store needed. You sign in with Google.
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