The most common questions about how KEXBI works, what it needs, and who it’s for.
MacroFactor is an adaptive TDEE tool. It adjusts your daily calorie target based on weight trends. KEXBI already calculates adaptive TDEE. That is one function inside a much larger decision engine.
KEXBI does not stop at a daily number. Fuel, hydration, and recovery are timed to your biology. Sleep, strain, HRV, and environment are processed continuously. If your data changes, the plan can rebuild in around 3 minutes.
MacroFactor gives you a number. KEXBI orchestrates your entire day.
For a detailed comparison of KEXBI vs MyFitnessPal, Cronometer, and MacroFactor, see What Actually Changes Your Plan?
Yes, within biological limits.
KEXBI prevents aggressive deficits that damage metabolism or strip lean mass. If you want a crash diet, this is not it.
No, but it weakens the system.
KEXBI is strongest when it can read sleep, HRV, strain, and recovery signals. Without that data, it falls back to more static maths, which removes much of the advantage.
An iPhone on iOS 26+, a kitchen scale, and consistency.
A wearable is strongly recommended. Already logging food? Keep your current app. KEXBI reads from Apple Health.
Missing a day does not break anything.
The system falls back to your physiological data. When you return, it recalibrates.
No. Every meal is built around your targets, calories, macros, and timing.
Eat something different, log it, and the system accounts for it in your remaining day. If you build a consistent logging habit, the engine unlocks intra-day replanning, adjusting the rest of your meals around what you actually ate.
Energy and gut stability: 4 to 6 days.
Body composition: 3 to 4 weeks.
Biomarkers: 8 to 12 weeks.
Consistency determines speed.
Your first week is free, and no card is needed to apply for the beta. Cohort 002 testers get a personal App Store code for two months free at launch. After that, standard pricing, cancel anytime.
After that it is £19.99 a month, or £199 a year, with everything included and nothing held back for a higher tier. Cancel anytime. No lock-in, no catch.
KEXBI relies on on-device processing and Apple Health integration, so it needs iOS 26 or later.
Android follows once the core system is stable.
Yes, while places last. Cohort 002 is the final test group before the November launch: 50 places, free through the beta via TestFlight, and two months free when we launch.
You need an iPhone running iOS 26 or later. In exchange we ask you to use it for real and tell us what broke.
Public launch is November 2026.
Join the waitlist and we will email you the moment KEXBI opens to everyone.
We read the health and activity data needed to run your plan, including sleep, HRV, and energy expenditure through Apple Health.
Your data is never sold. It is never used to train public AI models. It exists only to run your system.
Cohort 002 is the last test group before the November launch. Fifty places, free via TestFlight, two months free at launch.
Apply for the betaRather wait for launch? Leave your email and we will tell you the moment it opens.
Read the science