Macros,engineered.
Fuel composes adaptive meal plans from your goals, training load, and pantry — and gives you precise tooling when you'd rather drive. Logging is photo-, barcode-, and language-fast.
Planned for you. Or by you.
Both modes share the same logging, food library, and analytics. Switch any time — even mid-day.
AI Meal Planning
Specify your targets, preferences, and equipment. Fuel composes a week of meals, sequences them around training, and recalibrates after every log.
- Macro targets adjusted to training load
- Pantry- and budget-aware substitution
- Allergy, religion, and ethics filters
- Auto-rebalances when you eat off-plan
Manual Log & Build
When you know exactly what you want. A precise builder for meals and recipes — with the same logging and analytics underneath.
- Photo, barcode, and natural-language logging
- Recipe builder with per-serving macros
- Saved meals, templates, and copy-from-yesterday
- Unit conversion and weighed-vs-portion
What a Fuel day looks like.
A weekday on a 2,650 kcal cut. 180 g protein. Built around an evening lift session and a 6 AM run.
Macros, micros, and trends — visible.
Protein adherence, body-comp trend, and micronutrient gaps at a glance. No streaks. No guilt.
Fuel is one part of Kai.
Each Kai sub-app focuses on one thing and does it precisely. They share context, so what you eat in Fuel informs how Lift programs your block, what Pace plans for long runs, and how Reset times your last meal.
- LiftStrength
Resistance training programmed around your week and recovery.
- PaceCardio
Run programming, from couch-5K to marathon block.
- MomentMindfulness
Short, situational meditations — calm before lifts, focus before work.
- ResetSleep
Sleep coaching that learns your chronotype.
- MuseSound
Sound and breath, tuned for warm-ups, recovery, and sleep.
- EaseRecovery
Active recovery and mobility prescribed from your training load.
One subscription. Seven apps. Shared context.
Visit KaiBring a dietitian. Or be one.
14 days free. Full planning. Full toolkit. Cancel from inside the app.